/[pcre]/code/trunk/pcre_exec.c
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revision 677 by ph10, Sun Aug 28 10:50:07 2011 UTC revision 1425 by ph10, Tue Dec 31 17:44:40 2013 UTC
# Line 6  Line 6 
6  and semantics are as close as possible to those of the Perl 5 language.  and semantics are as close as possible to those of the Perl 5 language.
7    
8                         Written by Philip Hazel                         Written by Philip Hazel
9             Copyright (c) 1997-2011 University of Cambridge             Copyright (c) 1997-2013 University of Cambridge
10    
11  -----------------------------------------------------------------------------  -----------------------------------------------------------------------------
12  Redistribution and use in source and binary forms, with or without  Redistribution and use in source and binary forms, with or without
# Line 37  POSSIBILITY OF SUCH DAMAGE. Line 37  POSSIBILITY OF SUCH DAMAGE.
37  -----------------------------------------------------------------------------  -----------------------------------------------------------------------------
38  */  */
39    
   
40  /* This module contains pcre_exec(), the externally visible function that does  /* This module contains pcre_exec(), the externally visible function that does
41  pattern matching using an NFA algorithm, trying to mimic Perl as closely as  pattern matching using an NFA algorithm, trying to mimic Perl as closely as
42  possible. There are also some static supporting functions. */  possible. There are also some static supporting functions. */
# Line 57  possible. There are also some static sup Line 56  possible. There are also some static sup
56  #undef min  #undef min
57  #undef max  #undef max
58    
59    /* The md->capture_last field uses the lower 16 bits for the last captured
60    substring (which can never be greater than 65535) and a bit in the top half
61    to mean "capture vector overflowed". This odd way of doing things was
62    implemented when it was realized that preserving and restoring the overflow bit
63    whenever the last capture number was saved/restored made for a neater
64    interface, and doing it this way saved on (a) another variable, which would
65    have increased the stack frame size (a big NO-NO in PCRE) and (b) another
66    separate set of save/restore instructions. The following defines are used in
67    implementing this. */
68    
69    #define CAPLMASK    0x0000ffff    /* The bits used for last_capture */
70    #define OVFLMASK    0xffff0000    /* The bits used for the overflow flag */
71    #define OVFLBIT     0x00010000    /* The bit that is set for overflow */
72    
73  /* Values for setting in md->match_function_type to indicate two special types  /* Values for setting in md->match_function_type to indicate two special types
74  of call to match(). We do it this way to save on using another stack variable,  of call to match(). We do it this way to save on using another stack variable,
75  as stack usage is to be discouraged. */  as stack usage is to be discouraged. */
# Line 74  defined PCRE_ERROR_xxx codes, which are Line 87  defined PCRE_ERROR_xxx codes, which are
87  negative to avoid the external error codes. */  negative to avoid the external error codes. */
88    
89  #define MATCH_ACCEPT       (-999)  #define MATCH_ACCEPT       (-999)
90  #define MATCH_COMMIT       (-998)  #define MATCH_KETRPOS      (-998)
91  #define MATCH_KETRPOS      (-997)  #define MATCH_ONCE         (-997)
92  #define MATCH_ONCE         (-996)  /* The next 5 must be kept together and in sequence so that a test that checks
93    for any one of them can use a range. */
94    #define MATCH_COMMIT       (-996)
95  #define MATCH_PRUNE        (-995)  #define MATCH_PRUNE        (-995)
96  #define MATCH_SKIP         (-994)  #define MATCH_SKIP         (-994)
97  #define MATCH_SKIP_ARG     (-993)  #define MATCH_SKIP_ARG     (-993)
98  #define MATCH_THEN         (-992)  #define MATCH_THEN         (-992)
99    #define MATCH_BACKTRACK_MAX MATCH_THEN
100  /* This is a convenience macro for code that occurs many times. */  #define MATCH_BACKTRACK_MIN MATCH_COMMIT
   
 #define MRRETURN(ra) \  
   { \  
   md->mark = markptr; \  
   RRETURN(ra); \  
   }  
101    
102  /* Maximum number of ints of offset to save on the stack for recursive calls.  /* Maximum number of ints of offset to save on the stack for recursive calls.
103  If the offset vector is bigger, malloc is used. This should be a multiple of 3,  If the offset vector is bigger, malloc is used. This should be a multiple of 3,
# Line 98  because the offset vector is always a mu Line 107  because the offset vector is always a mu
107    
108  /* Min and max values for the common repeats; for the maxima, 0 => infinity */  /* Min and max values for the common repeats; for the maxima, 0 => infinity */
109    
110  static const char rep_min[] = { 0, 0, 1, 1, 0, 0 };  static const char rep_min[] = { 0, 0, 1, 1, 0, 0, 0, 0, 0, 1, 0, };
111  static const char rep_max[] = { 0, 0, 0, 0, 1, 1 };  static const char rep_max[] = { 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 1, };
   
   
112    
113  #ifdef PCRE_DEBUG  #ifdef PCRE_DEBUG
114  /*************************************************  /*************************************************
# Line 121  Returns:     nothing Line 128  Returns:     nothing
128  */  */
129    
130  static void  static void
131  pchars(const uschar *p, int length, BOOL is_subject, match_data *md)  pchars(const pcre_uchar *p, int length, BOOL is_subject, match_data *md)
132  {  {
133  unsigned int c;  pcre_uint32 c;
134    BOOL utf = md->utf;
135  if (is_subject && length > md->end_subject - p) length = md->end_subject - p;  if (is_subject && length > md->end_subject - p) length = md->end_subject - p;
136  while (length-- > 0)  while (length-- > 0)
137    if (isprint(c = *(p++))) printf("%c", c); else printf("\\x%02x", c);    if (isprint(c = *p++)) printf("%c", (char)c); else printf("\\x{%02x}", c);
138  }  }
139  #endif  #endif
140    
# Line 148  Arguments: Line 156  Arguments:
156    md          points to match data block    md          points to match data block
157    caseless    TRUE if caseless    caseless    TRUE if caseless
158    
159  Returns:      < 0 if not matched, otherwise the number of subject bytes matched  Returns:      >= 0 the number of subject bytes matched
160                  -1 no match
161                  -2 partial match; always given if at end subject
162  */  */
163    
164  static int  static int
165  match_ref(int offset, register USPTR eptr, int length, match_data *md,  match_ref(int offset, register PCRE_PUCHAR eptr, int length, match_data *md,
166    BOOL caseless)    BOOL caseless)
167  {  {
168  USPTR eptr_start = eptr;  PCRE_PUCHAR eptr_start = eptr;
169  register USPTR p = md->start_subject + md->offset_vector[offset];  register PCRE_PUCHAR p = md->start_subject + md->offset_vector[offset];
170    #if defined SUPPORT_UTF && defined SUPPORT_UCP
171    BOOL utf = md->utf;
172    #endif
173    
174  #ifdef PCRE_DEBUG  #ifdef PCRE_DEBUG
175  if (eptr >= md->end_subject)  if (eptr >= md->end_subject)
# Line 171  pchars(p, length, FALSE, md); Line 184  pchars(p, length, FALSE, md);
184  printf("\n");  printf("\n");
185  #endif  #endif
186    
187  /* Always fail if reference not set (and not JavaScript compatible). */  /* Always fail if reference not set (and not JavaScript compatible - in that
188    case the length is passed as zero). */
189    
190  if (length < 0) return -1;  if (length < 0) return -1;
191    
# Line 181  ASCII characters. */ Line 195  ASCII characters. */
195    
196  if (caseless)  if (caseless)
197    {    {
198  #ifdef SUPPORT_UTF8  #if defined SUPPORT_UTF && defined SUPPORT_UCP
199  #ifdef SUPPORT_UCP    if (utf)
   if (md->utf8)  
200      {      {
201      /* Match characters up to the end of the reference. NOTE: the number of      /* Match characters up to the end of the reference. NOTE: the number of
202      bytes matched may differ, because there are some characters whose upper and      data units matched may differ, because in UTF-8 there are some characters
203      lower case versions code as different numbers of bytes. For example, U+023A      whose upper and lower case versions code have different numbers of bytes.
204      (2 bytes in UTF-8) is the upper case version of U+2C65 (3 bytes in UTF-8);      For example, U+023A (2 bytes in UTF-8) is the upper case version of U+2C65
205      a sequence of 3 of the former uses 6 bytes, as does a sequence of two of      (3 bytes in UTF-8); a sequence of 3 of the former uses 6 bytes, as does a
206      the latter. It is important, therefore, to check the length along the      sequence of two of the latter. It is important, therefore, to check the
207      reference, not along the subject (earlier code did this wrong). */      length along the reference, not along the subject (earlier code did this
208        wrong). */
209    
210      USPTR endptr = p + length;      PCRE_PUCHAR endptr = p + length;
211      while (p < endptr)      while (p < endptr)
212        {        {
213        int c, d;        pcre_uint32 c, d;
214        if (eptr >= md->end_subject) return -1;        const ucd_record *ur;
215          if (eptr >= md->end_subject) return -2;   /* Partial match */
216        GETCHARINC(c, eptr);        GETCHARINC(c, eptr);
217        GETCHARINC(d, p);        GETCHARINC(d, p);
218        if (c != d && c != UCD_OTHERCASE(d)) return -1;        ur = GET_UCD(d);
219          if (c != d && c != d + ur->other_case)
220            {
221            const pcre_uint32 *pp = PRIV(ucd_caseless_sets) + ur->caseset;
222            for (;;)
223              {
224              if (c < *pp) return -1;
225              if (c == *pp++) break;
226              }
227            }
228        }        }
229      }      }
230    else    else
231  #endif  #endif
 #endif  
232    
233    /* The same code works when not in UTF-8 mode and in UTF-8 mode when there    /* The same code works when not in UTF-8 mode and in UTF-8 mode when there
234    is no UCP support. */    is no UCP support. */
235      {      {
     if (eptr + length > md->end_subject) return -1;  
236      while (length-- > 0)      while (length-- > 0)
237        { if (md->lcc[*p++] != md->lcc[*eptr++]) return -1; }        {
238          pcre_uint32 cc, cp;
239          if (eptr >= md->end_subject) return -2;   /* Partial match */
240          cc = *eptr;
241          cp = *p;
242          if (TABLE_GET(cp, md->lcc, cp) != TABLE_GET(cc, md->lcc, cc)) return -1;
243          p++;
244          eptr++;
245          }
246      }      }
247    }    }
248    
# Line 221  are in UTF-8 mode. */ Line 251  are in UTF-8 mode. */
251    
252  else  else
253    {    {
254    if (eptr + length > md->end_subject) return -1;    while (length-- > 0)
255    while (length-- > 0) if (*p++ != *eptr++) return -1;      {
256        if (eptr >= md->end_subject) return -2;   /* Partial match */
257        if (*p++ != *eptr++) return -1;
258        }
259    }    }
260    
261  return eptr - eptr_start;  return (int)(eptr - eptr_start);
262  }  }
263    
264    
# Line 277  enum { RM1=1, RM2,  RM3,  RM4,  RM5,  RM Line 310  enum { RM1=1, RM2,  RM3,  RM4,  RM5,  RM
310         RM31,  RM32, RM33, RM34, RM35, RM36, RM37, RM38, RM39, RM40,         RM31,  RM32, RM33, RM34, RM35, RM36, RM37, RM38, RM39, RM40,
311         RM41,  RM42, RM43, RM44, RM45, RM46, RM47, RM48, RM49, RM50,         RM41,  RM42, RM43, RM44, RM45, RM46, RM47, RM48, RM49, RM50,
312         RM51,  RM52, RM53, RM54, RM55, RM56, RM57, RM58, RM59, RM60,         RM51,  RM52, RM53, RM54, RM55, RM56, RM57, RM58, RM59, RM60,
313         RM61,  RM62, RM63 };         RM61,  RM62, RM63, RM64, RM65, RM66, RM67 };
314    
315  /* These versions of the macros use the stack, as normal. There are debugging  /* These versions of the macros use the stack, as normal. There are debugging
316  versions and production versions. Note that the "rw" argument of RMATCH isn't  versions and production versions. Note that the "rw" argument of RMATCH isn't
# Line 290  actually used in this definition. */ Line 323  actually used in this definition. */
323  #define RMATCH(ra,rb,rc,rd,re,rw) \  #define RMATCH(ra,rb,rc,rd,re,rw) \
324    { \    { \
325    printf("match() called in line %d\n", __LINE__); \    printf("match() called in line %d\n", __LINE__); \
326    rrc = match(ra,rb,mstart,markptr,rc,rd,re,rdepth+1); \    rrc = match(ra,rb,mstart,rc,rd,re,rdepth+1); \
327    printf("to line %d\n", __LINE__); \    printf("to line %d\n", __LINE__); \
328    }    }
329  #define RRETURN(ra) \  #define RRETURN(ra) \
330    { \    { \
331    printf("match() returned %d from line %d ", ra, __LINE__); \    printf("match() returned %d from line %d\n", ra, __LINE__); \
332    return ra; \    return ra; \
333    }    }
334  #else  #else
335  #define RMATCH(ra,rb,rc,rd,re,rw) \  #define RMATCH(ra,rb,rc,rd,re,rw) \
336    rrc = match(ra,rb,mstart,markptr,rc,rd,re,rdepth+1)    rrc = match(ra,rb,mstart,rc,rd,re,rdepth+1)
337  #define RRETURN(ra) return ra  #define RRETURN(ra) return ra
338  #endif  #endif
339    
# Line 315  argument of match(), which never changes Line 348  argument of match(), which never changes
348    
349  #define RMATCH(ra,rb,rc,rd,re,rw)\  #define RMATCH(ra,rb,rc,rd,re,rw)\
350    {\    {\
351    heapframe *newframe = (heapframe *)(pcre_stack_malloc)(sizeof(heapframe));\    heapframe *newframe = frame->Xnextframe;\
352    if (newframe == NULL) RRETURN(PCRE_ERROR_NOMEMORY);\    if (newframe == NULL)\
353    frame->Xwhere = rw; \      {\
354        newframe = (heapframe *)(PUBL(stack_malloc))(sizeof(heapframe));\
355        if (newframe == NULL) RRETURN(PCRE_ERROR_NOMEMORY);\
356        newframe->Xnextframe = NULL;\
357        frame->Xnextframe = newframe;\
358        }\
359      frame->Xwhere = rw;\
360    newframe->Xeptr = ra;\    newframe->Xeptr = ra;\
361    newframe->Xecode = rb;\    newframe->Xecode = rb;\
362    newframe->Xmstart = mstart;\    newframe->Xmstart = mstart;\
   newframe->Xmarkptr = markptr;\  
363    newframe->Xoffset_top = rc;\    newframe->Xoffset_top = rc;\
364    newframe->Xeptrb = re;\    newframe->Xeptrb = re;\
365    newframe->Xrdepth = frame->Xrdepth + 1;\    newframe->Xrdepth = frame->Xrdepth + 1;\
# Line 337  argument of match(), which never changes Line 375  argument of match(), which never changes
375    {\    {\
376    heapframe *oldframe = frame;\    heapframe *oldframe = frame;\
377    frame = oldframe->Xprevframe;\    frame = oldframe->Xprevframe;\
   (pcre_stack_free)(oldframe);\  
378    if (frame != NULL)\    if (frame != NULL)\
379      {\      {\
380      rrc = ra;\      rrc = ra;\
# Line 351  argument of match(), which never changes Line 388  argument of match(), which never changes
388    
389  typedef struct heapframe {  typedef struct heapframe {
390    struct heapframe *Xprevframe;    struct heapframe *Xprevframe;
391      struct heapframe *Xnextframe;
392    
393    /* Function arguments that may change */    /* Function arguments that may change */
394    
395    USPTR Xeptr;    PCRE_PUCHAR Xeptr;
396    const uschar *Xecode;    const pcre_uchar *Xecode;
397    USPTR Xmstart;    PCRE_PUCHAR Xmstart;
   USPTR Xmarkptr;  
398    int Xoffset_top;    int Xoffset_top;
399    eptrblock *Xeptrb;    eptrblock *Xeptrb;
400    unsigned int Xrdepth;    unsigned int Xrdepth;
401    
402    /* Function local variables */    /* Function local variables */
403    
404    USPTR Xcallpat;    PCRE_PUCHAR Xcallpat;
405  #ifdef SUPPORT_UTF8  #ifdef SUPPORT_UTF
406    USPTR Xcharptr;    PCRE_PUCHAR Xcharptr;
407  #endif  #endif
408    USPTR Xdata;    PCRE_PUCHAR Xdata;
409    USPTR Xnext;    PCRE_PUCHAR Xnext;
410    USPTR Xpp;    PCRE_PUCHAR Xpp;
411    USPTR Xprev;    PCRE_PUCHAR Xprev;
412    USPTR Xsaved_eptr;    PCRE_PUCHAR Xsaved_eptr;
413    
414    recursion_info Xnew_recursive;    recursion_info Xnew_recursive;
415    
# Line 382  typedef struct heapframe { Line 419  typedef struct heapframe {
419    
420  #ifdef SUPPORT_UCP  #ifdef SUPPORT_UCP
421    int Xprop_type;    int Xprop_type;
422    int Xprop_value;    unsigned int Xprop_value;
423    int Xprop_fail_result;    int Xprop_fail_result;
424    int Xoclength;    int Xoclength;
425    uschar Xocchars[8];    pcre_uchar Xocchars[6];
426  #endif  #endif
427    
428    int Xcodelink;    int Xcodelink;
# Line 395  typedef struct heapframe { Line 432  typedef struct heapframe {
432    int Xlength;    int Xlength;
433    int Xmax;    int Xmax;
434    int Xmin;    int Xmin;
435    int Xnumber;    unsigned int Xnumber;
436    int Xoffset;    int Xoffset;
437    int Xop;    unsigned int Xop;
438    int Xsave_capture_last;    pcre_int32 Xsave_capture_last;
439    int Xsave_offset1, Xsave_offset2, Xsave_offset3;    int Xsave_offset1, Xsave_offset2, Xsave_offset3;
440    int Xstacksave[REC_STACK_SAVE_MAX];    int Xstacksave[REC_STACK_SAVE_MAX];
441    
# Line 427  returns a negative (error) response, the Line 464  returns a negative (error) response, the
464  same response. */  same response. */
465    
466  /* These macros pack up tests that are used for partial matching, and which  /* These macros pack up tests that are used for partial matching, and which
467  appears several times in the code. We set the "hit end" flag if the pointer is  appear several times in the code. We set the "hit end" flag if the pointer is
468  at the end of the subject and also past the start of the subject (i.e.  at the end of the subject and also past the start of the subject (i.e.
469  something has been matched). For hard partial matching, we then return  something has been matched). For hard partial matching, we then return
470  immediately. The second one is used when we already know we are past the end of  immediately. The second one is used when we already know we are past the end of
# Line 438  the subject. */ Line 475  the subject. */
475        eptr > md->start_used_ptr) \        eptr > md->start_used_ptr) \
476      { \      { \
477      md->hitend = TRUE; \      md->hitend = TRUE; \
478      if (md->partial > 1) MRRETURN(PCRE_ERROR_PARTIAL); \      if (md->partial > 1) RRETURN(PCRE_ERROR_PARTIAL); \
479      }      }
480    
481  #define SCHECK_PARTIAL()\  #define SCHECK_PARTIAL()\
482    if (md->partial != 0 && eptr > md->start_used_ptr) \    if (md->partial != 0 && eptr > md->start_used_ptr) \
483      { \      { \
484      md->hitend = TRUE; \      md->hitend = TRUE; \
485      if (md->partial > 1) MRRETURN(PCRE_ERROR_PARTIAL); \      if (md->partial > 1) RRETURN(PCRE_ERROR_PARTIAL); \
486      }      }
487    
488    
489  /* Performance note: It might be tempting to extract commonly used fields from  /* Performance note: It might be tempting to extract commonly used fields from
490  the md structure (e.g. utf8, end_subject) into individual variables to improve  the md structure (e.g. utf, end_subject) into individual variables to improve
491  performance. Tests using gcc on a SPARC disproved this; in the first case, it  performance. Tests using gcc on a SPARC disproved this; in the first case, it
492  made performance worse.  made performance worse.
493    
# Line 459  Arguments: Line 496  Arguments:
496     ecode       pointer to current position in compiled code     ecode       pointer to current position in compiled code
497     mstart      pointer to the current match start position (can be modified     mstart      pointer to the current match start position (can be modified
498                   by encountering \K)                   by encountering \K)
    markptr     pointer to the most recent MARK name, or NULL  
499     offset_top  current top pointer     offset_top  current top pointer
500     md          pointer to "static" info for the match     md          pointer to "static" info for the match
501     eptrb       pointer to chain of blocks containing eptr at start of     eptrb       pointer to chain of blocks containing eptr at start of
# Line 474  Returns:       MATCH_MATCH if matched Line 510  Returns:       MATCH_MATCH if matched
510  */  */
511    
512  static int  static int
513  match(REGISTER USPTR eptr, REGISTER const uschar *ecode, USPTR mstart,  match(REGISTER PCRE_PUCHAR eptr, REGISTER const pcre_uchar *ecode,
514    const uschar *markptr, int offset_top, match_data *md, eptrblock *eptrb,    PCRE_PUCHAR mstart, int offset_top, match_data *md, eptrblock *eptrb,
515    unsigned int rdepth)    unsigned int rdepth)
516  {  {
517  /* These variables do not need to be preserved over recursion in this function,  /* These variables do not need to be preserved over recursion in this function,
# Line 484  so they can be ordinary variables in all Line 520  so they can be ordinary variables in all
520    
521  register int  rrc;         /* Returns from recursive calls */  register int  rrc;         /* Returns from recursive calls */
522  register int  i;           /* Used for loops not involving calls to RMATCH() */  register int  i;           /* Used for loops not involving calls to RMATCH() */
523  register unsigned int c;   /* Character values not kept over RMATCH() calls */  register pcre_uint32 c;    /* Character values not kept over RMATCH() calls */
524  register BOOL utf8;        /* Local copy of UTF-8 flag for speed */  register BOOL utf;         /* Local copy of UTF flag for speed */
525    
526  BOOL minimize, possessive; /* Quantifier options */  BOOL minimize, possessive; /* Quantifier options */
527  BOOL caseless;  BOOL caseless;
528  int condcode;  int condcode;
529    
530  /* When recursion is not being used, all "local" variables that have to be  /* When recursion is not being used, all "local" variables that have to be
531  preserved over calls to RMATCH() are part of a "frame" which is obtained from  preserved over calls to RMATCH() are part of a "frame". We set up the top-level
532  heap storage. Set up the top-level frame here; others are obtained from the  frame on the stack here; subsequent instantiations are obtained from the heap
533  heap whenever RMATCH() does a "recursion". See the macro definitions above. */  whenever RMATCH() does a "recursion". See the macro definitions above. Putting
534    the top-level on the stack rather than malloc-ing them all gives a performance
535    boost in many cases where there is not much "recursion". */
536    
537  #ifdef NO_RECURSE  #ifdef NO_RECURSE
538  heapframe *frame = (heapframe *)(pcre_stack_malloc)(sizeof(heapframe));  heapframe *frame = (heapframe *)md->match_frames_base;
 if (frame == NULL) RRETURN(PCRE_ERROR_NOMEMORY);  
 frame->Xprevframe = NULL;            /* Marks the top level */  
539    
540  /* Copy in the original argument variables */  /* Copy in the original argument variables */
541    
542  frame->Xeptr = eptr;  frame->Xeptr = eptr;
543  frame->Xecode = ecode;  frame->Xecode = ecode;
544  frame->Xmstart = mstart;  frame->Xmstart = mstart;
 frame->Xmarkptr = markptr;  
545  frame->Xoffset_top = offset_top;  frame->Xoffset_top = offset_top;
546  frame->Xeptrb = eptrb;  frame->Xeptrb = eptrb;
547  frame->Xrdepth = rdepth;  frame->Xrdepth = rdepth;
# Line 520  HEAP_RECURSE: Line 555  HEAP_RECURSE:
555  #define eptr               frame->Xeptr  #define eptr               frame->Xeptr
556  #define ecode              frame->Xecode  #define ecode              frame->Xecode
557  #define mstart             frame->Xmstart  #define mstart             frame->Xmstart
 #define markptr            frame->Xmarkptr  
558  #define offset_top         frame->Xoffset_top  #define offset_top         frame->Xoffset_top
559  #define eptrb              frame->Xeptrb  #define eptrb              frame->Xeptrb
560  #define rdepth             frame->Xrdepth  #define rdepth             frame->Xrdepth
561    
562  /* Ditto for the local variables */  /* Ditto for the local variables */
563    
564  #ifdef SUPPORT_UTF8  #ifdef SUPPORT_UTF
565  #define charptr            frame->Xcharptr  #define charptr            frame->Xcharptr
566  #endif  #endif
567  #define callpat            frame->Xcallpat  #define callpat            frame->Xcallpat
# Line 585  declarations can be cut out in a block. Line 619  declarations can be cut out in a block.
619  below are for variables that do not have to be preserved over a recursive call  below are for variables that do not have to be preserved over a recursive call
620  to RMATCH(). */  to RMATCH(). */
621    
622  #ifdef SUPPORT_UTF8  #ifdef SUPPORT_UTF
623  const uschar *charptr;  const pcre_uchar *charptr;
624  #endif  #endif
625  const uschar *callpat;  const pcre_uchar *callpat;
626  const uschar *data;  const pcre_uchar *data;
627  const uschar *next;  const pcre_uchar *next;
628  USPTR         pp;  PCRE_PUCHAR       pp;
629  const uschar *prev;  const pcre_uchar *prev;
630  USPTR         saved_eptr;  PCRE_PUCHAR       saved_eptr;
631    
632  recursion_info new_recursive;  recursion_info new_recursive;
633    
# Line 603  BOOL prev_is_word; Line 637  BOOL prev_is_word;
637    
638  #ifdef SUPPORT_UCP  #ifdef SUPPORT_UCP
639  int prop_type;  int prop_type;
640  int prop_value;  unsigned int prop_value;
641  int prop_fail_result;  int prop_fail_result;
642  int oclength;  int oclength;
643  uschar occhars[8];  pcre_uchar occhars[6];
644  #endif  #endif
645    
646  int codelink;  int codelink;
# Line 614  int ctype; Line 648  int ctype;
648  int length;  int length;
649  int max;  int max;
650  int min;  int min;
651  int number;  unsigned int number;
652  int offset;  int offset;
653  int op;  unsigned int op;
654  int save_capture_last;  pcre_int32 save_capture_last;
655  int save_offset1, save_offset2, save_offset3;  int save_offset1, save_offset2, save_offset3;
656  int stacksave[REC_STACK_SAVE_MAX];  int stacksave[REC_STACK_SAVE_MAX];
657    
658  eptrblock newptrb;  eptrblock newptrb;
659    
660    /* There is a special fudge for calling match() in a way that causes it to
661    measure the size of its basic stack frame when the stack is being used for
662    recursion. The second argument (ecode) being NULL triggers this behaviour. It
663    cannot normally ever be NULL. The return is the negated value of the frame
664    size. */
665    
666    if (ecode == NULL)
667      {
668      if (rdepth == 0)
669        return match((PCRE_PUCHAR)&rdepth, NULL, NULL, 0, NULL, NULL, 1);
670      else
671        {
672        int len = (char *)&rdepth - (char *)eptr;
673        return (len > 0)? -len : len;
674        }
675      }
676  #endif     /* NO_RECURSE */  #endif     /* NO_RECURSE */
677    
678  /* To save space on the stack and in the heap frame, I have doubled up on some  /* To save space on the stack and in the heap frame, I have doubled up on some
# Line 634  the alternative names that are used. */ Line 685  the alternative names that are used. */
685  #define code_offset   codelink  #define code_offset   codelink
686  #define condassert    condition  #define condassert    condition
687  #define matched_once  prev_is_word  #define matched_once  prev_is_word
688    #define foc           number
689    #define save_mark     data
690    
691  /* These statements are here to stop the compiler complaining about unitialized  /* These statements are here to stop the compiler complaining about unitialized
692  variables. */  variables. */
# Line 659  defined). However, RMATCH isn't like a f Line 712  defined). However, RMATCH isn't like a f
712  complicated macro. It has to be used in one particular way. This shouldn't,  complicated macro. It has to be used in one particular way. This shouldn't,
713  however, impact performance when true recursion is being used. */  however, impact performance when true recursion is being used. */
714    
715  #ifdef SUPPORT_UTF8  #ifdef SUPPORT_UTF
716  utf8 = md->utf8;       /* Local copy of the flag */  utf = md->utf;       /* Local copy of the flag */
717  #else  #else
718  utf8 = FALSE;  utf = FALSE;
719  #endif  #endif
720    
721  /* First check that we haven't called match() too many times, or that we  /* First check that we haven't called match() too many times, or that we
# Line 701  for (;;) Line 754  for (;;)
754    switch(op)    switch(op)
755      {      {
756      case OP_MARK:      case OP_MARK:
757      markptr = ecode + 2;      md->nomatch_mark = ecode + 2;
758      RMATCH(eptr, ecode + _pcre_OP_lengths[*ecode] + ecode[1], offset_top, md,      md->mark = NULL;    /* In case previously set by assertion */
759        RMATCH(eptr, ecode + PRIV(OP_lengths)[*ecode] + ecode[1], offset_top, md,
760        eptrb, RM55);        eptrb, RM55);
761        if ((rrc == MATCH_MATCH || rrc == MATCH_ACCEPT) &&
762             md->mark == NULL) md->mark = ecode + 2;
763    
764      /* A return of MATCH_SKIP_ARG means that matching failed at SKIP with an      /* A return of MATCH_SKIP_ARG means that matching failed at SKIP with an
765      argument, and we must check whether that argument matches this MARK's      argument, and we must check whether that argument matches this MARK's
# Line 712  for (;;) Line 768  for (;;)
768      position and return MATCH_SKIP. Otherwise, pass back the return code      position and return MATCH_SKIP. Otherwise, pass back the return code
769      unaltered. */      unaltered. */
770    
771      if (rrc == MATCH_SKIP_ARG &&      else if (rrc == MATCH_SKIP_ARG &&
772          strcmp((char *)markptr, (char *)(md->start_match_ptr)) == 0)          STRCMP_UC_UC_TEST(ecode + 2, md->start_match_ptr) == 0)
773        {        {
774        md->start_match_ptr = eptr;        md->start_match_ptr = eptr;
775        RRETURN(MATCH_SKIP);        RRETURN(MATCH_SKIP);
776        }        }
   
     if (md->mark == NULL) md->mark = markptr;  
777      RRETURN(rrc);      RRETURN(rrc);
778    
779      case OP_FAIL:      case OP_FAIL:
780      MRRETURN(MATCH_NOMATCH);      RRETURN(MATCH_NOMATCH);
   
     /* COMMIT overrides PRUNE, SKIP, and THEN */  
781    
782      case OP_COMMIT:      case OP_COMMIT:
783      RMATCH(eptr, ecode + _pcre_OP_lengths[*ecode], offset_top, md,      RMATCH(eptr, ecode + PRIV(OP_lengths)[*ecode], offset_top, md,
784        eptrb, RM52);        eptrb, RM52);
785      if (rrc != MATCH_NOMATCH && rrc != MATCH_PRUNE &&      if (rrc != MATCH_NOMATCH) RRETURN(rrc);
786          rrc != MATCH_SKIP && rrc != MATCH_SKIP_ARG &&      RRETURN(MATCH_COMMIT);
         rrc != MATCH_THEN)  
       RRETURN(rrc);  
     MRRETURN(MATCH_COMMIT);  
   
     /* PRUNE overrides THEN */  
787    
788      case OP_PRUNE:      case OP_PRUNE:
789      RMATCH(eptr, ecode + _pcre_OP_lengths[*ecode], offset_top, md,      RMATCH(eptr, ecode + PRIV(OP_lengths)[*ecode], offset_top, md,
790        eptrb, RM51);        eptrb, RM51);
791      if (rrc != MATCH_NOMATCH && rrc != MATCH_THEN) RRETURN(rrc);      if (rrc != MATCH_NOMATCH) RRETURN(rrc);
792      MRRETURN(MATCH_PRUNE);      RRETURN(MATCH_PRUNE);
793    
794      case OP_PRUNE_ARG:      case OP_PRUNE_ARG:
795      RMATCH(eptr, ecode + _pcre_OP_lengths[*ecode] + ecode[1], offset_top, md,      md->nomatch_mark = ecode + 2;
796        md->mark = NULL;    /* In case previously set by assertion */
797        RMATCH(eptr, ecode + PRIV(OP_lengths)[*ecode] + ecode[1], offset_top, md,
798        eptrb, RM56);        eptrb, RM56);
799      if (rrc != MATCH_NOMATCH && rrc != MATCH_THEN) RRETURN(rrc);      if ((rrc == MATCH_MATCH || rrc == MATCH_ACCEPT) &&
800      md->mark = ecode + 2;           md->mark == NULL) md->mark = ecode + 2;
801        if (rrc != MATCH_NOMATCH) RRETURN(rrc);
802      RRETURN(MATCH_PRUNE);      RRETURN(MATCH_PRUNE);
803    
     /* SKIP overrides PRUNE and THEN */  
   
804      case OP_SKIP:      case OP_SKIP:
805      RMATCH(eptr, ecode + _pcre_OP_lengths[*ecode], offset_top, md,      RMATCH(eptr, ecode + PRIV(OP_lengths)[*ecode], offset_top, md,
806        eptrb, RM53);        eptrb, RM53);
807      if (rrc != MATCH_NOMATCH && rrc != MATCH_PRUNE && rrc != MATCH_THEN)      if (rrc != MATCH_NOMATCH) RRETURN(rrc);
       RRETURN(rrc);  
808      md->start_match_ptr = eptr;   /* Pass back current position */      md->start_match_ptr = eptr;   /* Pass back current position */
809      MRRETURN(MATCH_SKIP);      RRETURN(MATCH_SKIP);
810    
811        /* Note that, for Perl compatibility, SKIP with an argument does NOT set
812        nomatch_mark. When a pattern match ends with a SKIP_ARG for which there was
813        not a matching mark, we have to re-run the match, ignoring the SKIP_ARG
814        that failed and any that precede it (either they also failed, or were not
815        triggered). To do this, we maintain a count of executed SKIP_ARGs. If a
816        SKIP_ARG gets to top level, the match is re-run with md->ignore_skip_arg
817        set to the count of the one that failed. */
818    
819      case OP_SKIP_ARG:      case OP_SKIP_ARG:
820      RMATCH(eptr, ecode + _pcre_OP_lengths[*ecode] + ecode[1], offset_top, md,      md->skip_arg_count++;
821        if (md->skip_arg_count <= md->ignore_skip_arg)
822          {
823          ecode += PRIV(OP_lengths)[*ecode] + ecode[1];
824          break;
825          }
826        RMATCH(eptr, ecode + PRIV(OP_lengths)[*ecode] + ecode[1], offset_top, md,
827        eptrb, RM57);        eptrb, RM57);
828      if (rrc != MATCH_NOMATCH && rrc != MATCH_PRUNE && rrc != MATCH_THEN)      if (rrc != MATCH_NOMATCH) RRETURN(rrc);
       RRETURN(rrc);  
829    
830      /* Pass back the current skip name by overloading md->start_match_ptr and      /* Pass back the current skip name by overloading md->start_match_ptr and
831      returning the special MATCH_SKIP_ARG return code. This will either be      returning the special MATCH_SKIP_ARG return code. This will either be
832      caught by a matching MARK, or get to the top, where it is treated the same      caught by a matching MARK, or get to the top, where it causes a rematch
833      as PRUNE. */      with md->ignore_skip_arg set to the value of md->skip_arg_count. */
834    
835      md->start_match_ptr = ecode + 2;      md->start_match_ptr = ecode + 2;
836      RRETURN(MATCH_SKIP_ARG);      RRETURN(MATCH_SKIP_ARG);
837    
838      /* For THEN (and THEN_ARG) we pass back the address of the bracket or      /* For THEN (and THEN_ARG) we pass back the address of the opcode, so that
839      the alt that is at the start of the current branch. This makes it possible      the branch in which it occurs can be determined. Overload the start of
840      to skip back past alternatives that precede the THEN within the current      match pointer to do this. */
     branch. */  
841    
842      case OP_THEN:      case OP_THEN:
843      RMATCH(eptr, ecode + _pcre_OP_lengths[*ecode], offset_top, md,      RMATCH(eptr, ecode + PRIV(OP_lengths)[*ecode], offset_top, md,
844        eptrb, RM54);        eptrb, RM54);
845      if (rrc != MATCH_NOMATCH) RRETURN(rrc);      if (rrc != MATCH_NOMATCH) RRETURN(rrc);
846      md->start_match_ptr = ecode - GET(ecode, 1);      md->start_match_ptr = ecode;
847      MRRETURN(MATCH_THEN);      RRETURN(MATCH_THEN);
848    
849      case OP_THEN_ARG:      case OP_THEN_ARG:
850      RMATCH(eptr, ecode + _pcre_OP_lengths[*ecode] + ecode[1+LINK_SIZE],      md->nomatch_mark = ecode + 2;
851        offset_top, md, eptrb, RM58);      md->mark = NULL;    /* In case previously set by assertion */
852        RMATCH(eptr, ecode + PRIV(OP_lengths)[*ecode] + ecode[1], offset_top,
853          md, eptrb, RM58);
854        if ((rrc == MATCH_MATCH || rrc == MATCH_ACCEPT) &&
855             md->mark == NULL) md->mark = ecode + 2;
856      if (rrc != MATCH_NOMATCH) RRETURN(rrc);      if (rrc != MATCH_NOMATCH) RRETURN(rrc);
857      md->start_match_ptr = ecode - GET(ecode, 1);      md->start_match_ptr = ecode;
     md->mark = ecode + LINK_SIZE + 2;  
858      RRETURN(MATCH_THEN);      RRETURN(MATCH_THEN);
859    
860        /* Handle an atomic group that does not contain any capturing parentheses.
861        This can be handled like an assertion. Prior to 8.13, all atomic groups
862        were handled this way. In 8.13, the code was changed as below for ONCE, so
863        that backups pass through the group and thereby reset captured values.
864        However, this uses a lot more stack, so in 8.20, atomic groups that do not
865        contain any captures generate OP_ONCE_NC, which can be handled in the old,
866        less stack intensive way.
867    
868        Check the alternative branches in turn - the matching won't pass the KET
869        for this kind of subpattern. If any one branch matches, we carry on as at
870        the end of a normal bracket, leaving the subject pointer, but resetting
871        the start-of-match value in case it was changed by \K. */
872    
873        case OP_ONCE_NC:
874        prev = ecode;
875        saved_eptr = eptr;
876        save_mark = md->mark;
877        do
878          {
879          RMATCH(eptr, ecode + 1 + LINK_SIZE, offset_top, md, eptrb, RM64);
880          if (rrc == MATCH_MATCH)  /* Note: _not_ MATCH_ACCEPT */
881            {
882            mstart = md->start_match_ptr;
883            break;
884            }
885          if (rrc == MATCH_THEN)
886            {
887            next = ecode + GET(ecode,1);
888            if (md->start_match_ptr < next &&
889                (*ecode == OP_ALT || *next == OP_ALT))
890              rrc = MATCH_NOMATCH;
891            }
892    
893          if (rrc != MATCH_NOMATCH) RRETURN(rrc);
894          ecode += GET(ecode,1);
895          md->mark = save_mark;
896          }
897        while (*ecode == OP_ALT);
898    
899        /* If hit the end of the group (which could be repeated), fail */
900    
901        if (*ecode != OP_ONCE_NC && *ecode != OP_ALT) RRETURN(MATCH_NOMATCH);
902    
903        /* Continue as from after the group, updating the offsets high water
904        mark, since extracts may have been taken. */
905    
906        do ecode += GET(ecode, 1); while (*ecode == OP_ALT);
907    
908        offset_top = md->end_offset_top;
909        eptr = md->end_match_ptr;
910    
911        /* For a non-repeating ket, just continue at this level. This also
912        happens for a repeating ket if no characters were matched in the group.
913        This is the forcible breaking of infinite loops as implemented in Perl
914        5.005. */
915    
916        if (*ecode == OP_KET || eptr == saved_eptr)
917          {
918          ecode += 1+LINK_SIZE;
919          break;
920          }
921    
922        /* The repeating kets try the rest of the pattern or restart from the
923        preceding bracket, in the appropriate order. The second "call" of match()
924        uses tail recursion, to avoid using another stack frame. */
925    
926        if (*ecode == OP_KETRMIN)
927          {
928          RMATCH(eptr, ecode + 1 + LINK_SIZE, offset_top, md, eptrb, RM65);
929          if (rrc != MATCH_NOMATCH) RRETURN(rrc);
930          ecode = prev;
931          goto TAIL_RECURSE;
932          }
933        else  /* OP_KETRMAX */
934          {
935          RMATCH(eptr, prev, offset_top, md, eptrb, RM66);
936          if (rrc != MATCH_NOMATCH) RRETURN(rrc);
937          ecode += 1 + LINK_SIZE;
938          goto TAIL_RECURSE;
939          }
940        /* Control never gets here */
941    
942      /* Handle a capturing bracket, other than those that are possessive with an      /* Handle a capturing bracket, other than those that are possessive with an
943      unlimited repeat. If there is space in the offset vector, save the current      unlimited repeat. If there is space in the offset vector, save the current
944      subject position in the working slot at the top of the vector. We mustn't      subject position in the working slot at the top of the vector. We mustn't
# Line 827  for (;;) Line 971  for (;;)
971        save_offset2 = md->offset_vector[offset+1];        save_offset2 = md->offset_vector[offset+1];
972        save_offset3 = md->offset_vector[md->offset_end - number];        save_offset3 = md->offset_vector[md->offset_end - number];
973        save_capture_last = md->capture_last;        save_capture_last = md->capture_last;
974          save_mark = md->mark;
975    
976        DPRINTF(("saving %d %d %d\n", save_offset1, save_offset2, save_offset3));        DPRINTF(("saving %d %d %d\n", save_offset1, save_offset2, save_offset3));
977        md->offset_vector[md->offset_end - number] =        md->offset_vector[md->offset_end - number] =
# Line 835  for (;;) Line 980  for (;;)
980        for (;;)        for (;;)
981          {          {
982          if (op >= OP_SBRA) md->match_function_type = MATCH_CBEGROUP;          if (op >= OP_SBRA) md->match_function_type = MATCH_CBEGROUP;
983          RMATCH(eptr, ecode + _pcre_OP_lengths[*ecode], offset_top, md,          RMATCH(eptr, ecode + PRIV(OP_lengths)[*ecode], offset_top, md,
984            eptrb, RM1);            eptrb, RM1);
985          if (rrc == MATCH_ONCE) break;  /* Backing up through an atomic group */          if (rrc == MATCH_ONCE) break;  /* Backing up through an atomic group */
986          if (rrc != MATCH_NOMATCH &&  
987              (rrc != MATCH_THEN || md->start_match_ptr != ecode))          /* If we backed up to a THEN, check whether it is within the current
988            RRETURN(rrc);          branch by comparing the address of the THEN that is passed back with
989            the end of the branch. If it is within the current branch, and the
990            branch is one of two or more alternatives (it either starts or ends
991            with OP_ALT), we have reached the limit of THEN's action, so convert
992            the return code to NOMATCH, which will cause normal backtracking to
993            happen from now on. Otherwise, THEN is passed back to an outer
994            alternative. This implements Perl's treatment of parenthesized groups,
995            where a group not containing | does not affect the current alternative,
996            that is, (X) is NOT the same as (X|(*F)). */
997    
998            if (rrc == MATCH_THEN)
999              {
1000              next = ecode + GET(ecode,1);
1001              if (md->start_match_ptr < next &&
1002                  (*ecode == OP_ALT || *next == OP_ALT))
1003                rrc = MATCH_NOMATCH;
1004              }
1005    
1006            /* Anything other than NOMATCH is passed back. */
1007    
1008            if (rrc != MATCH_NOMATCH) RRETURN(rrc);
1009          md->capture_last = save_capture_last;          md->capture_last = save_capture_last;
1010          ecode += GET(ecode, 1);          ecode += GET(ecode, 1);
1011            md->mark = save_mark;
1012          if (*ecode != OP_ALT) break;          if (*ecode != OP_ALT) break;
1013          }          }
1014    
# Line 851  for (;;) Line 1017  for (;;)
1017        md->offset_vector[offset+1] = save_offset2;        md->offset_vector[offset+1] = save_offset2;
1018        md->offset_vector[md->offset_end - number] = save_offset3;        md->offset_vector[md->offset_end - number] = save_offset3;
1019    
1020        /* At this point, rrc will be one of MATCH_ONCE, MATCH_NOMATCH, or        /* At this point, rrc will be one of MATCH_ONCE or MATCH_NOMATCH. */
       MATCH_THEN. */  
1021    
1022        if (rrc != MATCH_THEN && md->mark == NULL) md->mark = markptr;        RRETURN(rrc);
       RRETURN(((rrc == MATCH_ONCE)? MATCH_ONCE:MATCH_NOMATCH));  
1023        }        }
1024    
1025      /* FALL THROUGH ... Insufficient room for saving captured contents. Treat      /* FALL THROUGH ... Insufficient room for saving captured contents. Treat
# Line 870  for (;;) Line 1034  for (;;)
1034      /* VVVVVVVVVVVVVVVVVVVVVVVVV */      /* VVVVVVVVVVVVVVVVVVVVVVVVV */
1035    
1036      /* Non-capturing or atomic group, except for possessive with unlimited      /* Non-capturing or atomic group, except for possessive with unlimited
1037      repeat. Loop for all the alternatives. When we get to the final alternative      repeat and ONCE group with no captures. Loop for all the alternatives.
1038      within the brackets, we used to return the result of a recursive call to  
1039      match() whatever happened so it was possible to reduce stack usage by      When we get to the final alternative within the brackets, we used to return
1040      turning this into a tail recursion, except in the case of a possibly empty      the result of a recursive call to match() whatever happened so it was
1041      group. However, now that there is the possiblity of (*THEN) occurring in      possible to reduce stack usage by turning this into a tail recursion,
1042      the final alternative, this optimization is no longer possible.      except in the case of a possibly empty group. However, now that there is
1043        the possiblity of (*THEN) occurring in the final alternative, this
1044        optimization is no longer always possible.
1045    
1046        We can optimize if we know there are no (*THEN)s in the pattern; at present
1047        this is the best that can be done.
1048    
1049      MATCH_ONCE is returned when the end of an atomic group is successfully      MATCH_ONCE is returned when the end of an atomic group is successfully
1050      reached, but subsequent matching fails. It passes back up the tree (causing      reached, but subsequent matching fails. It passes back up the tree (causing
# Line 891  for (;;) Line 1060  for (;;)
1060    
1061      for (;;)      for (;;)
1062        {        {
1063        if (op >= OP_SBRA || op == OP_ONCE) md->match_function_type = MATCH_CBEGROUP;        if (op >= OP_SBRA || op == OP_ONCE)
1064        RMATCH(eptr, ecode + _pcre_OP_lengths[*ecode], offset_top, md, eptrb,          md->match_function_type = MATCH_CBEGROUP;
1065    
1066          /* If this is not a possibly empty group, and there are no (*THEN)s in
1067          the pattern, and this is the final alternative, optimize as described
1068          above. */
1069    
1070          else if (!md->hasthen && ecode[GET(ecode, 1)] != OP_ALT)
1071            {
1072            ecode += PRIV(OP_lengths)[*ecode];
1073            goto TAIL_RECURSE;
1074            }
1075    
1076          /* In all other cases, we have to make another call to match(). */
1077    
1078          save_mark = md->mark;
1079          save_capture_last = md->capture_last;
1080          RMATCH(eptr, ecode + PRIV(OP_lengths)[*ecode], offset_top, md, eptrb,
1081          RM2);          RM2);
1082        if (rrc != MATCH_NOMATCH &&  
1083            (rrc != MATCH_THEN || md->start_match_ptr != ecode))        /* See comment in the code for capturing groups above about handling
1084          THEN. */
1085    
1086          if (rrc == MATCH_THEN)
1087            {
1088            next = ecode + GET(ecode,1);
1089            if (md->start_match_ptr < next &&
1090                (*ecode == OP_ALT || *next == OP_ALT))
1091              rrc = MATCH_NOMATCH;
1092            }
1093    
1094          if (rrc != MATCH_NOMATCH)
1095          {          {
1096          if (rrc == MATCH_ONCE)          if (rrc == MATCH_ONCE)
1097            {            {
1098            const uschar *scode = ecode;            const pcre_uchar *scode = ecode;
1099            if (*scode != OP_ONCE)           /* If not at start, find it */            if (*scode != OP_ONCE)           /* If not at start, find it */
1100              {              {
1101              while (*scode == OP_ALT) scode += GET(scode, 1);              while (*scode == OP_ALT) scode += GET(scode, 1);
# Line 910  for (;;) Line 1106  for (;;)
1106          RRETURN(rrc);          RRETURN(rrc);
1107          }          }
1108        ecode += GET(ecode, 1);        ecode += GET(ecode, 1);
1109          md->mark = save_mark;
1110        if (*ecode != OP_ALT) break;        if (*ecode != OP_ALT) break;
1111          md->capture_last = save_capture_last;
1112        }        }
1113      if (rrc != MATCH_THEN && md->mark == NULL) md->mark = markptr;  
1114      RRETURN(MATCH_NOMATCH);      RRETURN(MATCH_NOMATCH);
1115    
1116      /* Handle possessive capturing brackets with an unlimited repeat. We come      /* Handle possessive capturing brackets with an unlimited repeat. We come
# Line 941  for (;;) Line 1139  for (;;)
1139      if (offset < md->offset_max)      if (offset < md->offset_max)
1140        {        {
1141        matched_once = FALSE;        matched_once = FALSE;
1142        code_offset = ecode - md->start_code;        code_offset = (int)(ecode - md->start_code);
1143    
1144        save_offset1 = md->offset_vector[offset];        save_offset1 = md->offset_vector[offset];
1145        save_offset2 = md->offset_vector[offset+1];        save_offset2 = md->offset_vector[offset+1];
# Line 964  for (;;) Line 1162  for (;;)
1162          md->offset_vector[md->offset_end - number] =          md->offset_vector[md->offset_end - number] =
1163            (int)(eptr - md->start_subject);            (int)(eptr - md->start_subject);
1164          if (op >= OP_SBRA) md->match_function_type = MATCH_CBEGROUP;          if (op >= OP_SBRA) md->match_function_type = MATCH_CBEGROUP;
1165          RMATCH(eptr, ecode + _pcre_OP_lengths[*ecode], offset_top, md,          RMATCH(eptr, ecode + PRIV(OP_lengths)[*ecode], offset_top, md,
1166            eptrb, RM63);            eptrb, RM63);
1167          if (rrc == MATCH_KETRPOS)          if (rrc == MATCH_KETRPOS)
1168            {            {
# Line 973  for (;;) Line 1171  for (;;)
1171            ecode = md->start_code + code_offset;            ecode = md->start_code + code_offset;
1172            save_capture_last = md->capture_last;            save_capture_last = md->capture_last;
1173            matched_once = TRUE;            matched_once = TRUE;
1174              mstart = md->start_match_ptr;    /* In case \K changed it */
1175            continue;            continue;
1176            }            }
1177          if (rrc != MATCH_NOMATCH &&  
1178              (rrc != MATCH_THEN || md->start_match_ptr != ecode))          /* See comment in the code for capturing groups above about handling
1179            RRETURN(rrc);          THEN. */
1180    
1181            if (rrc == MATCH_THEN)
1182              {
1183              next = ecode + GET(ecode,1);
1184              if (md->start_match_ptr < next &&
1185                  (*ecode == OP_ALT || *next == OP_ALT))
1186                rrc = MATCH_NOMATCH;
1187              }
1188    
1189            if (rrc != MATCH_NOMATCH) RRETURN(rrc);
1190          md->capture_last = save_capture_last;          md->capture_last = save_capture_last;
1191          ecode += GET(ecode, 1);          ecode += GET(ecode, 1);
1192          if (*ecode != OP_ALT) break;          if (*ecode != OP_ALT) break;
# Line 990  for (;;) Line 1199  for (;;)
1199          md->offset_vector[md->offset_end - number] = save_offset3;          md->offset_vector[md->offset_end - number] = save_offset3;
1200          }          }
1201    
       if (rrc != MATCH_THEN && md->mark == NULL) md->mark = markptr;  
1202        if (allow_zero || matched_once)        if (allow_zero || matched_once)
1203          {          {
1204          ecode += 1 + LINK_SIZE;          ecode += 1 + LINK_SIZE;
# Line 1022  for (;;) Line 1230  for (;;)
1230    
1231      POSSESSIVE_NON_CAPTURE:      POSSESSIVE_NON_CAPTURE:
1232      matched_once = FALSE;      matched_once = FALSE;
1233      code_offset = ecode - md->start_code;      code_offset = (int)(ecode - md->start_code);
1234        save_capture_last = md->capture_last;
1235    
1236      for (;;)      for (;;)
1237        {        {
1238        if (op >= OP_SBRA) md->match_function_type = MATCH_CBEGROUP;        if (op >= OP_SBRA) md->match_function_type = MATCH_CBEGROUP;
1239        RMATCH(eptr, ecode + _pcre_OP_lengths[*ecode], offset_top, md,        RMATCH(eptr, ecode + PRIV(OP_lengths)[*ecode], offset_top, md,
1240          eptrb, RM48);          eptrb, RM48);
1241        if (rrc == MATCH_KETRPOS)        if (rrc == MATCH_KETRPOS)
1242          {          {
# Line 1035  for (;;) Line 1244  for (;;)
1244          eptr = md->end_match_ptr;          eptr = md->end_match_ptr;
1245          ecode = md->start_code + code_offset;          ecode = md->start_code + code_offset;
1246          matched_once = TRUE;          matched_once = TRUE;
1247            mstart = md->start_match_ptr;   /* In case \K reset it */
1248          continue;          continue;
1249          }          }
1250        if (rrc != MATCH_NOMATCH &&  
1251            (rrc != MATCH_THEN || md->start_match_ptr != ecode))        /* See comment in the code for capturing groups above about handling
1252          RRETURN(rrc);        THEN. */
1253    
1254          if (rrc == MATCH_THEN)
1255            {
1256            next = ecode + GET(ecode,1);
1257            if (md->start_match_ptr < next &&
1258                (*ecode == OP_ALT || *next == OP_ALT))
1259              rrc = MATCH_NOMATCH;
1260            }
1261    
1262          if (rrc != MATCH_NOMATCH) RRETURN(rrc);
1263        ecode += GET(ecode, 1);        ecode += GET(ecode, 1);
1264        if (*ecode != OP_ALT) break;        if (*ecode != OP_ALT) break;
1265          md->capture_last = save_capture_last;
1266        }        }
1267    
1268      if (matched_once || allow_zero)      if (matched_once || allow_zero)
# Line 1053  for (;;) Line 1274  for (;;)
1274    
1275      /* Control never reaches here. */      /* Control never reaches here. */
1276    
1277      /* Conditional group: compilation checked that there are no more than      /* Conditional group: compilation checked that there are no more than two
1278      two branches. If the condition is false, skipping the first branch takes us      branches. If the condition is false, skipping the first branch takes us
1279      past the end if there is only one branch, but that's OK because that is      past the end of the item if there is only one branch, but that's exactly
1280      exactly what going to the ket would do. */      what we want. */
1281    
1282      case OP_COND:      case OP_COND:
1283      case OP_SCOND:      case OP_SCOND:
1284      codelink = GET(ecode, 1);  
1285        /* The variable codelink will be added to ecode when the condition is
1286        false, to get to the second branch. Setting it to the offset to the ALT
1287        or KET, then incrementing ecode achieves this effect. We now have ecode
1288        pointing to the condition or callout. */
1289    
1290        codelink = GET(ecode, 1);   /* Offset to the second branch */
1291        ecode += 1 + LINK_SIZE;     /* From this opcode */
1292    
1293      /* Because of the way auto-callout works during compile, a callout item is      /* Because of the way auto-callout works during compile, a callout item is
1294      inserted between OP_COND and an assertion condition. */      inserted between OP_COND and an assertion condition. */
1295    
1296      if (ecode[LINK_SIZE+1] == OP_CALLOUT)      if (*ecode == OP_CALLOUT)
1297        {        {
1298        if (pcre_callout != NULL)        if (PUBL(callout) != NULL)
1299          {          {
1300          pcre_callout_block cb;          PUBL(callout_block) cb;
1301          cb.version          = 2;   /* Version 1 of the callout block */          cb.version          = 2;   /* Version 1 of the callout block */
1302          cb.callout_number   = ecode[LINK_SIZE+2];          cb.callout_number   = ecode[1];
1303          cb.offset_vector    = md->offset_vector;          cb.offset_vector    = md->offset_vector;
1304    #if defined COMPILE_PCRE8
1305          cb.subject          = (PCRE_SPTR)md->start_subject;          cb.subject          = (PCRE_SPTR)md->start_subject;
1306    #elif defined COMPILE_PCRE16
1307            cb.subject          = (PCRE_SPTR16)md->start_subject;
1308    #elif defined COMPILE_PCRE32
1309            cb.subject          = (PCRE_SPTR32)md->start_subject;
1310    #endif
1311          cb.subject_length   = (int)(md->end_subject - md->start_subject);          cb.subject_length   = (int)(md->end_subject - md->start_subject);
1312          cb.start_match      = (int)(mstart - md->start_subject);          cb.start_match      = (int)(mstart - md->start_subject);
1313          cb.current_position = (int)(eptr - md->start_subject);          cb.current_position = (int)(eptr - md->start_subject);
1314          cb.pattern_position = GET(ecode, LINK_SIZE + 3);          cb.pattern_position = GET(ecode, 2);
1315          cb.next_item_length = GET(ecode, 3 + 2*LINK_SIZE);          cb.next_item_length = GET(ecode, 2 + LINK_SIZE);
1316          cb.capture_top      = offset_top/2;          cb.capture_top      = offset_top/2;
1317          cb.capture_last     = md->capture_last;          cb.capture_last     = md->capture_last & CAPLMASK;
1318            /* Internal change requires this for API compatibility. */
1319            if (cb.capture_last == 0) cb.capture_last = -1;
1320          cb.callout_data     = md->callout_data;          cb.callout_data     = md->callout_data;
1321          cb.mark             = markptr;          cb.mark             = md->nomatch_mark;
1322          if ((rrc = (*pcre_callout)(&cb)) > 0) MRRETURN(MATCH_NOMATCH);          if ((rrc = (*PUBL(callout))(&cb)) > 0) RRETURN(MATCH_NOMATCH);
1323          if (rrc < 0) RRETURN(rrc);          if (rrc < 0) RRETURN(rrc);
1324          }          }
       ecode += _pcre_OP_lengths[OP_CALLOUT];  
       }  
1325    
1326      condcode = ecode[LINK_SIZE+1];        /* Advance ecode past the callout, so it now points to the condition. We
1327          must adjust codelink so that the value of ecode+codelink is unchanged. */
1328    
1329          ecode += PRIV(OP_lengths)[OP_CALLOUT];
1330          codelink -= PRIV(OP_lengths)[OP_CALLOUT];
1331          }
1332    
1333      /* Now see what the actual condition is */      /* Test the various possible conditions */
1334    
1335      if (condcode == OP_RREF || condcode == OP_NRREF)    /* Recursion test */      condition = FALSE;
1336        switch(condcode = *ecode)
1337        {        {
1338        if (md->recursive == NULL)                /* Not recursing => FALSE */        case OP_RREF:         /* Numbered group recursion test */
1339          if (md->recursive != NULL)     /* Not recursing => FALSE */
1340          {          {
1341          condition = FALSE;          unsigned int recno = GET2(ecode, 1);   /* Recursion group number*/
1342          ecode += GET(ecode, 1);          condition = (recno == RREF_ANY || recno == md->recursive->group_num);
1343          }          }
1344        else        break;
         {  
         int recno = GET2(ecode, LINK_SIZE + 2);   /* Recursion group number*/  
         condition =  (recno == RREF_ANY || recno == md->recursive->group_num);  
   
         /* If the test is for recursion into a specific subpattern, and it is  
         false, but the test was set up by name, scan the table to see if the  
         name refers to any other numbers, and test them. The condition is true  
         if any one is set. */  
   
         if (!condition && condcode == OP_NRREF && recno != RREF_ANY)  
           {  
           uschar *slotA = md->name_table;  
           for (i = 0; i < md->name_count; i++)  
             {  
             if (GET2(slotA, 0) == recno) break;  
             slotA += md->name_entry_size;  
             }  
   
           /* Found a name for the number - there can be only one; duplicate  
           names for different numbers are allowed, but not vice versa. First  
           scan down for duplicates. */  
   
           if (i < md->name_count)  
             {  
             uschar *slotB = slotA;  
             while (slotB > md->name_table)  
               {  
               slotB -= md->name_entry_size;  
               if (strcmp((char *)slotA + 2, (char *)slotB + 2) == 0)  
                 {  
                 condition = GET2(slotB, 0) == md->recursive->group_num;  
                 if (condition) break;  
                 }  
               else break;  
               }  
   
             /* Scan up for duplicates */  
1345    
1346              if (!condition)        case OP_DNRREF:       /* Duplicate named group recursion test */
1347                {        if (md->recursive != NULL)
1348                slotB = slotA;          {
1349                for (i++; i < md->name_count; i++)          int count = GET2(ecode, 1 + IMM2_SIZE);
1350                  {          pcre_uchar *slot = md->name_table + GET2(ecode, 1) * md->name_entry_size;
1351                  slotB += md->name_entry_size;          while (count-- > 0)
1352                  if (strcmp((char *)slotA + 2, (char *)slotB + 2) == 0)            {
1353                    {            unsigned int recno = GET2(slot, 0);
1354                    condition = GET2(slotB, 0) == md->recursive->group_num;            condition = recno == md->recursive->group_num;
1355                    if (condition) break;            if (condition) break;
1356                    }            slot += md->name_entry_size;
                 else break;  
                 }  
               }  
             }  
1357            }            }
   
         /* Chose branch according to the condition */  
   
         ecode += condition? 3 : GET(ecode, 1);  
1358          }          }
1359        }        break;
1360    
1361      else if (condcode == OP_CREF || condcode == OP_NCREF)  /* Group used test */        case OP_CREF:         /* Numbered group used test */
1362        {        offset = GET2(ecode, 1) << 1;  /* Doubled ref number */
       offset = GET2(ecode, LINK_SIZE+2) << 1;  /* Doubled ref number */  
1363        condition = offset < offset_top && md->offset_vector[offset] >= 0;        condition = offset < offset_top && md->offset_vector[offset] >= 0;
1364          break;
1365    
1366        /* If the numbered capture is unset, but the reference was by name,        case OP_DNCREF:      /* Duplicate named group used test */
       scan the table to see if the name refers to any other numbers, and test  
       them. The condition is true if any one is set. This is tediously similar  
       to the code above, but not close enough to try to amalgamate. */  
   
       if (!condition && condcode == OP_NCREF)  
1367          {          {
1368          int refno = offset >> 1;          int count = GET2(ecode, 1 + IMM2_SIZE);
1369          uschar *slotA = md->name_table;          pcre_uchar *slot = md->name_table + GET2(ecode, 1) * md->name_entry_size;
1370            while (count-- > 0)
1371          for (i = 0; i < md->name_count; i++)            {
1372            {            offset = GET2(slot, 0) << 1;
1373            if (GET2(slotA, 0) == refno) break;            condition = offset < offset_top && md->offset_vector[offset] >= 0;
1374            slotA += md->name_entry_size;            if (condition) break;
1375            }            slot += md->name_entry_size;
   
         /* Found a name for the number - there can be only one; duplicate names  
         for different numbers are allowed, but not vice versa. First scan down  
         for duplicates. */  
   
         if (i < md->name_count)  
           {  
           uschar *slotB = slotA;  
           while (slotB > md->name_table)  
             {  
             slotB -= md->name_entry_size;  
             if (strcmp((char *)slotA + 2, (char *)slotB + 2) == 0)  
               {  
               offset = GET2(slotB, 0) << 1;  
               condition = offset < offset_top &&  
                 md->offset_vector[offset] >= 0;  
               if (condition) break;  
               }  
             else break;  
             }  
   
           /* Scan up for duplicates */  
   
           if (!condition)  
             {  
             slotB = slotA;  
             for (i++; i < md->name_count; i++)  
               {  
               slotB += md->name_entry_size;  
               if (strcmp((char *)slotA + 2, (char *)slotB + 2) == 0)  
                 {  
                 offset = GET2(slotB, 0) << 1;  
                 condition = offset < offset_top &&  
                   md->offset_vector[offset] >= 0;  
                 if (condition) break;  
                 }  
               else break;  
               }  
             }  
1376            }            }
1377          }          }
1378          break;
1379    
1380        /* Chose branch according to the condition */        case OP_DEF:     /* DEFINE - always false */
1381          break;
       ecode += condition? 3 : GET(ecode, 1);  
       }  
   
     else if (condcode == OP_DEF)     /* DEFINE - always false */  
       {  
       condition = FALSE;  
       ecode += GET(ecode, 1);  
       }  
1382    
1383      /* The condition is an assertion. Call match() to evaluate it - setting        /* The condition is an assertion. Call match() to evaluate it - setting
1384      md->match_function_type to MATCH_CONDASSERT causes it to stop at the end of        md->match_function_type to MATCH_CONDASSERT causes it to stop at the end
1385      an assertion. */        of an assertion. */
1386    
1387      else        default:
       {  
1388        md->match_function_type = MATCH_CONDASSERT;        md->match_function_type = MATCH_CONDASSERT;
1389        RMATCH(eptr, ecode + 1 + LINK_SIZE, offset_top, md, NULL, RM3);        RMATCH(eptr, ecode, offset_top, md, NULL, RM3);
1390        if (rrc == MATCH_MATCH)        if (rrc == MATCH_MATCH)
1391          {          {
1392          if (md->end_offset_top > offset_top)          if (md->end_offset_top > offset_top)
1393            offset_top = md->end_offset_top;  /* Captures may have happened */            offset_top = md->end_offset_top;  /* Captures may have happened */
1394          condition = TRUE;          condition = TRUE;
1395          ecode += 1 + LINK_SIZE + GET(ecode, LINK_SIZE + 2);  
1396            /* Advance ecode past the assertion to the start of the first branch,
1397            but adjust it so that the general choosing code below works. */
1398    
1399            ecode += GET(ecode, 1);
1400          while (*ecode == OP_ALT) ecode += GET(ecode, 1);          while (*ecode == OP_ALT) ecode += GET(ecode, 1);
1401            ecode += 1 + LINK_SIZE - PRIV(OP_lengths)[condcode];
1402          }          }
1403        else if (rrc != MATCH_NOMATCH &&  
1404                (rrc != MATCH_THEN || md->start_match_ptr != ecode))        /* PCRE doesn't allow the effect of (*THEN) to escape beyond an
1405          assertion; it is therefore treated as NOMATCH. Any other return is an
1406          error. */
1407    
1408          else if (rrc != MATCH_NOMATCH && rrc != MATCH_THEN)
1409          {          {
1410          RRETURN(rrc);         /* Need braces because of following else */          RRETURN(rrc);         /* Need braces because of following else */
1411          }          }
1412        else        break;
         {  
         condition = FALSE;  
         ecode += codelink;  
         }  
1413        }        }
1414    
1415      /* We are now at the branch that is to be obeyed. As there is only one,      /* Choose branch according to the condition */
1416      we used to use tail recursion to avoid using another stack frame, except  
1417      when there was unlimited repeat of a possibly empty group. However, that      ecode += condition? PRIV(OP_lengths)[condcode] : codelink;
1418      strategy no longer works because of the possibilty of (*THEN) being  
1419      encountered in the branch. A recursive call to match() is always required,      /* We are now at the branch that is to be obeyed. As there is only one, we
1420      unless the second alternative doesn't exist, in which case we can just      can use tail recursion to avoid using another stack frame, except when
1421      plough on. */      there is unlimited repeat of a possibly empty group. In the latter case, a
1422        recursive call to match() is always required, unless the second alternative
1423        doesn't exist, in which case we can just plough on. Note that, for
1424        compatibility with Perl, the | in a conditional group is NOT treated as
1425        creating two alternatives. If a THEN is encountered in the branch, it
1426        propagates out to the enclosing alternative (unless nested in a deeper set
1427        of alternatives, of course). */
1428    
1429      if (condition || *ecode == OP_ALT)      if (condition || ecode[-(1+LINK_SIZE)] == OP_ALT)
1430        {        {
1431        if (op == OP_SCOND) md->match_function_type = MATCH_CBEGROUP;        if (op != OP_SCOND)
1432        RMATCH(eptr, ecode + 1 + LINK_SIZE, offset_top, md, eptrb, RM49);          {
1433        if (rrc == MATCH_THEN && md->start_match_ptr == ecode)          goto TAIL_RECURSE;
1434          rrc = MATCH_NOMATCH;          }
1435    
1436          md->match_function_type = MATCH_CBEGROUP;
1437          RMATCH(eptr, ecode, offset_top, md, eptrb, RM49);
1438        RRETURN(rrc);        RRETURN(rrc);
1439        }        }
1440      else                         /* Condition false & no alternative */  
1441         /* Condition false & no alternative; continue after the group. */
1442    
1443        else
1444        {        {
       ecode += 1 + LINK_SIZE;  
1445        }        }
1446      break;      break;
1447    
# Line 1290  for (;;) Line 1450  for (;;)
1450      to close any currently open capturing brackets. */      to close any currently open capturing brackets. */
1451    
1452      case OP_CLOSE:      case OP_CLOSE:
1453      number = GET2(ecode, 1);      number = GET2(ecode, 1);   /* Must be less than 65536 */
1454      offset = number << 1;      offset = number << 1;
1455    
1456  #ifdef PCRE_DEBUG  #ifdef PCRE_DEBUG
# Line 1298  for (;;) Line 1458  for (;;)
1458        printf("\n");        printf("\n");
1459  #endif  #endif
1460    
1461      md->capture_last = number;      md->capture_last = (md->capture_last & OVFLMASK) | number;
1462      if (offset >= md->offset_max) md->offset_overflow = TRUE; else      if (offset >= md->offset_max) md->capture_last |= OVFLBIT; else
1463        {        {
1464        md->offset_vector[offset] =        md->offset_vector[offset] =
1465          md->offset_vector[md->offset_end - number];          md->offset_vector[md->offset_end - number];
1466        md->offset_vector[offset+1] = (int)(eptr - md->start_subject);        md->offset_vector[offset+1] = (int)(eptr - md->start_subject);
1467        if (offset_top <= offset) offset_top = offset + 2;        if (offset_top <= offset) offset_top = offset + 2;
1468        }        }
1469      ecode += 3;      ecode += 1 + IMM2_SIZE;
1470      break;      break;
1471    
1472    
# Line 1326  for (;;) Line 1486  for (;;)
1486           (md->notempty ||           (md->notempty ||
1487             (md->notempty_atstart &&             (md->notempty_atstart &&
1488               mstart == md->start_subject + md->start_offset)))               mstart == md->start_subject + md->start_offset)))
1489        MRRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
1490    
1491      /* Otherwise, we have a match. */      /* Otherwise, we have a match. */
1492    
# Line 1335  for (;;) Line 1495  for (;;)
1495      md->start_match_ptr = mstart;       /* and the start (\K can modify) */      md->start_match_ptr = mstart;       /* and the start (\K can modify) */
1496    
1497      /* For some reason, the macros don't work properly if an expression is      /* For some reason, the macros don't work properly if an expression is
1498      given as the argument to MRRETURN when the heap is in use. */      given as the argument to RRETURN when the heap is in use. */
1499    
1500      rrc = (op == OP_END)? MATCH_MATCH : MATCH_ACCEPT;      rrc = (op == OP_END)? MATCH_MATCH : MATCH_ACCEPT;
1501      MRRETURN(rrc);      RRETURN(rrc);
1502    
1503      /* Assertion brackets. Check the alternative branches in turn - the      /* Assertion brackets. Check the alternative branches in turn - the
1504      matching won't pass the KET for an assertion. If any one branch matches,      matching won't pass the KET for an assertion. If any one branch matches,
# Line 1353  for (;;) Line 1513  for (;;)
1513    
1514      case OP_ASSERT:      case OP_ASSERT:
1515      case OP_ASSERTBACK:      case OP_ASSERTBACK:
1516        save_mark = md->mark;
1517      if (md->match_function_type == MATCH_CONDASSERT)      if (md->match_function_type == MATCH_CONDASSERT)
1518        {        {
1519        condassert = TRUE;        condassert = TRUE;
# Line 1360  for (;;) Line 1521  for (;;)
1521        }        }
1522      else condassert = FALSE;      else condassert = FALSE;
1523    
1524        /* Loop for each branch */
1525    
1526      do      do
1527        {        {
1528        RMATCH(eptr, ecode + 1 + LINK_SIZE, offset_top, md, NULL, RM4);        RMATCH(eptr, ecode + 1 + LINK_SIZE, offset_top, md, NULL, RM4);
1529    
1530          /* A match means that the assertion is true; break out of the loop
1531          that matches its alternatives. */
1532    
1533        if (rrc == MATCH_MATCH || rrc == MATCH_ACCEPT)        if (rrc == MATCH_MATCH || rrc == MATCH_ACCEPT)
1534          {          {
1535          mstart = md->start_match_ptr;   /* In case \K reset it */          mstart = md->start_match_ptr;   /* In case \K reset it */
         markptr = md->mark;  
1536          break;          break;
1537          }          }
1538        if (rrc != MATCH_NOMATCH &&  
1539            (rrc != MATCH_THEN || md->start_match_ptr != ecode))        /* If not matched, restore the previous mark setting. */
1540          RRETURN(rrc);  
1541          md->mark = save_mark;
1542    
1543          /* See comment in the code for capturing groups above about handling
1544          THEN. */
1545    
1546          if (rrc == MATCH_THEN)
1547            {
1548            next = ecode + GET(ecode,1);
1549            if (md->start_match_ptr < next &&
1550                (*ecode == OP_ALT || *next == OP_ALT))
1551              rrc = MATCH_NOMATCH;
1552            }
1553    
1554          /* Anything other than NOMATCH causes the entire assertion to fail,
1555          passing back the return code. This includes COMMIT, SKIP, PRUNE and an
1556          uncaptured THEN, which means they take their normal effect. This
1557          consistent approach does not always have exactly the same effect as in
1558          Perl. */
1559    
1560          if (rrc != MATCH_NOMATCH) RRETURN(rrc);
1561        ecode += GET(ecode, 1);        ecode += GET(ecode, 1);
1562        }        }
1563      while (*ecode == OP_ALT);      while (*ecode == OP_ALT);   /* Continue for next alternative */
1564    
1565        /* If we have tried all the alternative branches, the assertion has
1566        failed. If not, we broke out after a match. */
1567    
1568      if (*ecode == OP_KET) MRRETURN(MATCH_NOMATCH);      if (*ecode == OP_KET) RRETURN(MATCH_NOMATCH);
1569    
1570      /* If checking an assertion for a condition, return MATCH_MATCH. */      /* If checking an assertion for a condition, return MATCH_MATCH. */
1571    
1572      if (condassert) RRETURN(MATCH_MATCH);      if (condassert) RRETURN(MATCH_MATCH);
1573    
1574      /* Continue from after the assertion, updating the offsets high water      /* Continue from after a successful assertion, updating the offsets high
1575      mark, since extracts may have been taken during the assertion. */      water mark, since extracts may have been taken during the assertion. */
1576    
1577      do ecode += GET(ecode,1); while (*ecode == OP_ALT);      do ecode += GET(ecode,1); while (*ecode == OP_ALT);
1578      ecode += 1 + LINK_SIZE;      ecode += 1 + LINK_SIZE;
1579      offset_top = md->end_offset_top;      offset_top = md->end_offset_top;
1580      continue;      continue;
1581    
1582      /* Negative assertion: all branches must fail to match. Encountering SKIP,      /* Negative assertion: all branches must fail to match for the assertion to
1583      PRUNE, or COMMIT means we must assume failure without checking subsequent      succeed. */
     branches. */  
1584    
1585      case OP_ASSERT_NOT:      case OP_ASSERT_NOT:
1586      case OP_ASSERTBACK_NOT:      case OP_ASSERTBACK_NOT:
1587        save_mark = md->mark;
1588      if (md->match_function_type == MATCH_CONDASSERT)      if (md->match_function_type == MATCH_CONDASSERT)
1589        {        {
1590        condassert = TRUE;        condassert = TRUE;
# Line 1403  for (;;) Line 1592  for (;;)
1592        }        }
1593      else condassert = FALSE;      else condassert = FALSE;
1594    
1595        /* Loop for each alternative branch. */
1596    
1597      do      do
1598        {        {
1599        RMATCH(eptr, ecode + 1 + LINK_SIZE, offset_top, md, NULL, RM5);        RMATCH(eptr, ecode + 1 + LINK_SIZE, offset_top, md, NULL, RM5);
1600        if (rrc == MATCH_MATCH || rrc == MATCH_ACCEPT) MRRETURN(MATCH_NOMATCH);        md->mark = save_mark;   /* Always restore the mark setting */
1601        if (rrc == MATCH_SKIP || rrc == MATCH_PRUNE || rrc == MATCH_COMMIT)  
1602          switch(rrc)
1603          {          {
1604          do ecode += GET(ecode,1); while (*ecode == OP_ALT);          case MATCH_MATCH:            /* A successful match means */
1605            case MATCH_ACCEPT:           /* the assertion has failed. */
1606            RRETURN(MATCH_NOMATCH);
1607    
1608            case MATCH_NOMATCH:          /* Carry on with next branch */
1609          break;          break;
1610          }  
1611        if (rrc != MATCH_NOMATCH &&          /* See comment in the code for capturing groups above about handling
1612            (rrc != MATCH_THEN || md->start_match_ptr != ecode))          THEN. */
1613    
1614            case MATCH_THEN:
1615            next = ecode + GET(ecode,1);
1616            if (md->start_match_ptr < next &&
1617                (*ecode == OP_ALT || *next == OP_ALT))
1618              {
1619              rrc = MATCH_NOMATCH;
1620              break;
1621              }
1622            /* Otherwise fall through. */
1623    
1624            /* COMMIT, SKIP, PRUNE, and an uncaptured THEN cause the whole
1625            assertion to fail to match, without considering any more alternatives.
1626            Failing to match means the assertion is true. This is a consistent
1627            approach, but does not always have the same effect as in Perl. */
1628    
1629            case MATCH_COMMIT:
1630            case MATCH_SKIP:
1631            case MATCH_SKIP_ARG:
1632            case MATCH_PRUNE:
1633            do ecode += GET(ecode,1); while (*ecode == OP_ALT);
1634            goto NEG_ASSERT_TRUE;   /* Break out of alternation loop */
1635    
1636            /* Anything else is an error */
1637    
1638            default:
1639          RRETURN(rrc);          RRETURN(rrc);
1640            }
1641    
1642          /* Continue with next branch */
1643    
1644        ecode += GET(ecode,1);        ecode += GET(ecode,1);
1645        }        }
1646      while (*ecode == OP_ALT);      while (*ecode == OP_ALT);
1647    
1648      if (condassert) RRETURN(MATCH_MATCH);  /* Condition assertion */      /* All branches in the assertion failed to match. */
1649    
1650      ecode += 1 + LINK_SIZE;      NEG_ASSERT_TRUE:
1651        if (condassert) RRETURN(MATCH_MATCH);  /* Condition assertion */
1652        ecode += 1 + LINK_SIZE;                /* Continue with current branch */
1653      continue;      continue;
1654    
1655      /* Move the subject pointer back. This occurs only at the start of      /* Move the subject pointer back. This occurs only at the start of
# Line 1430  for (;;) Line 1658  for (;;)
1658      back a number of characters, not bytes. */      back a number of characters, not bytes. */
1659    
1660      case OP_REVERSE:      case OP_REVERSE:
1661  #ifdef SUPPORT_UTF8  #ifdef SUPPORT_UTF
1662      if (utf8)      if (utf)
1663        {        {
1664        i = GET(ecode, 1);        i = GET(ecode, 1);
1665        while (i-- > 0)        while (i-- > 0)
1666          {          {
1667          eptr--;          eptr--;
1668          if (eptr < md->start_subject) MRRETURN(MATCH_NOMATCH);          if (eptr < md->start_subject) RRETURN(MATCH_NOMATCH);
1669          BACKCHAR(eptr);          BACKCHAR(eptr);
1670          }          }
1671        }        }
# Line 1448  for (;;) Line 1676  for (;;)
1676    
1677        {        {
1678        eptr -= GET(ecode, 1);        eptr -= GET(ecode, 1);
1679        if (eptr < md->start_subject) MRRETURN(MATCH_NOMATCH);        if (eptr < md->start_subject) RRETURN(MATCH_NOMATCH);
1680        }        }
1681    
1682      /* Save the earliest consulted character, then skip to next op code */      /* Save the earliest consulted character, then skip to next op code */
# Line 1462  for (;;) Line 1690  for (;;)
1690      function is able to force a failure. */      function is able to force a failure. */
1691    
1692      case OP_CALLOUT:      case OP_CALLOUT:
1693      if (pcre_callout != NULL)      if (PUBL(callout) != NULL)
1694        {        {
1695        pcre_callout_block cb;        PUBL(callout_block) cb;
1696        cb.version          = 2;   /* Version 1 of the callout block */        cb.version          = 2;   /* Version 1 of the callout block */
1697        cb.callout_number   = ecode[1];        cb.callout_number   = ecode[1];
1698        cb.offset_vector    = md->offset_vector;        cb.offset_vector    = md->offset_vector;
1699    #if defined COMPILE_PCRE8
1700        cb.subject          = (PCRE_SPTR)md->start_subject;        cb.subject          = (PCRE_SPTR)md->start_subject;
1701    #elif defined COMPILE_PCRE16
1702          cb.subject          = (PCRE_SPTR16)md->start_subject;
1703    #elif defined COMPILE_PCRE32
1704          cb.subject          = (PCRE_SPTR32)md->start_subject;
1705    #endif
1706        cb.subject_length   = (int)(md->end_subject - md->start_subject);        cb.subject_length   = (int)(md->end_subject - md->start_subject);
1707        cb.start_match      = (int)(mstart - md->start_subject);        cb.start_match      = (int)(mstart - md->start_subject);
1708        cb.current_position = (int)(eptr - md->start_subject);        cb.current_position = (int)(eptr - md->start_subject);
1709        cb.pattern_position = GET(ecode, 2);        cb.pattern_position = GET(ecode, 2);
1710        cb.next_item_length = GET(ecode, 2 + LINK_SIZE);        cb.next_item_length = GET(ecode, 2 + LINK_SIZE);
1711        cb.capture_top      = offset_top/2;        cb.capture_top      = offset_top/2;
1712        cb.capture_last     = md->capture_last;        cb.capture_last     = md->capture_last & CAPLMASK;
1713          /* Internal change requires this for API compatibility. */
1714          if (cb.capture_last == 0) cb.capture_last = -1;
1715        cb.callout_data     = md->callout_data;        cb.callout_data     = md->callout_data;
1716        cb.mark             = markptr;        cb.mark             = md->nomatch_mark;
1717        if ((rrc = (*pcre_callout)(&cb)) > 0) MRRETURN(MATCH_NOMATCH);        if ((rrc = (*PUBL(callout))(&cb)) > 0) RRETURN(MATCH_NOMATCH);
1718        if (rrc < 0) RRETURN(rrc);        if (rrc < 0) RRETURN(rrc);
1719        }        }
1720      ecode += 2 + 2*LINK_SIZE;      ecode += 2 + 2*LINK_SIZE;
# Line 1504  for (;;) Line 1740  for (;;)
1740      case OP_RECURSE:      case OP_RECURSE:
1741        {        {
1742        recursion_info *ri;        recursion_info *ri;
1743        int recno;        unsigned int recno;
1744    
1745        callpat = md->start_code + GET(ecode, 1);        callpat = md->start_code + GET(ecode, 1);
1746        recno = (callpat == md->start_code)? 0 :        recno = (callpat == md->start_code)? 0 :
# Line 1521  for (;;) Line 1757  for (;;)
1757        /* Add to "recursing stack" */        /* Add to "recursing stack" */
1758    
1759        new_recursive.group_num = recno;        new_recursive.group_num = recno;
1760          new_recursive.saved_capture_last = md->capture_last;
1761        new_recursive.subject_position = eptr;        new_recursive.subject_position = eptr;
1762        new_recursive.prevrec = md->recursive;        new_recursive.prevrec = md->recursive;
1763        md->recursive = &new_recursive;        md->recursive = &new_recursive;
# Line 1537  for (;;) Line 1774  for (;;)
1774        else        else
1775          {          {
1776          new_recursive.offset_save =          new_recursive.offset_save =
1777            (int *)(pcre_malloc)(new_recursive.saved_max * sizeof(int));            (int *)(PUBL(malloc))(new_recursive.saved_max * sizeof(int));
1778          if (new_recursive.offset_save == NULL) RRETURN(PCRE_ERROR_NOMEMORY);          if (new_recursive.offset_save == NULL) RRETURN(PCRE_ERROR_NOMEMORY);
1779          }          }
1780        memcpy(new_recursive.offset_save, md->offset_vector,        memcpy(new_recursive.offset_save, md->offset_vector,
1781              new_recursive.saved_max * sizeof(int));              new_recursive.saved_max * sizeof(int));
1782    
1783        /* OK, now we can do the recursion. After processing each alternative,        /* OK, now we can do the recursion. After processing each alternative,
1784        restore the offset data. If there were nested recursions, md->recursive        restore the offset data and the last captured value. If there were nested
1785        might be changed, so reset it before looping. */        recursions, md->recursive might be changed, so reset it before looping.
1786          */
1787    
1788        DPRINTF(("Recursing into group %d\n", new_recursive.group_num));        DPRINTF(("Recursing into group %d\n", new_recursive.group_num));
1789        cbegroup = (*callpat >= OP_SBRA);        cbegroup = (*callpat >= OP_SBRA);
1790        do        do
1791          {          {
1792          if (cbegroup) md->match_function_type = MATCH_CBEGROUP;          if (cbegroup) md->match_function_type = MATCH_CBEGROUP;
1793          RMATCH(eptr, callpat + _pcre_OP_lengths[*callpat], offset_top,          RMATCH(eptr, callpat + PRIV(OP_lengths)[*callpat], offset_top,
1794            md, eptrb, RM6);            md, eptrb, RM6);
1795          memcpy(md->offset_vector, new_recursive.offset_save,          memcpy(md->offset_vector, new_recursive.offset_save,
1796              new_recursive.saved_max * sizeof(int));              new_recursive.saved_max * sizeof(int));
1797            md->capture_last = new_recursive.saved_capture_last;
1798            md->recursive = new_recursive.prevrec;
1799          if (rrc == MATCH_MATCH || rrc == MATCH_ACCEPT)          if (rrc == MATCH_MATCH || rrc == MATCH_ACCEPT)
1800            {            {
1801            DPRINTF(("Recursion matched\n"));            DPRINTF(("Recursion matched\n"));
           md->recursive = new_recursive.prevrec;  
1802            if (new_recursive.offset_save != stacksave)            if (new_recursive.offset_save != stacksave)
1803              (pcre_free)(new_recursive.offset_save);              (PUBL(free))(new_recursive.offset_save);
1804    
1805            /* Set where we got to in the subject, and reset the start in case            /* Set where we got to in the subject, and reset the start in case
1806            it was changed by \K. This *is* propagated back out of a recursion,            it was changed by \K. This *is* propagated back out of a recursion,
# Line 1571  for (;;) Line 1810  for (;;)
1810            mstart = md->start_match_ptr;            mstart = md->start_match_ptr;
1811            goto RECURSION_MATCHED;        /* Exit loop; end processing */            goto RECURSION_MATCHED;        /* Exit loop; end processing */
1812            }            }
1813          else if (rrc != MATCH_NOMATCH &&  
1814                  (rrc != MATCH_THEN || md->start_match_ptr != ecode))          /* PCRE does not allow THEN, SKIP, PRUNE or COMMIT to escape beyond a
1815            recursion; they cause a NOMATCH for the entire recursion. These codes
1816            are defined in a range that can be tested for. */
1817    
1818            if (rrc >= MATCH_BACKTRACK_MIN && rrc <= MATCH_BACKTRACK_MAX)
1819              RRETURN(MATCH_NOMATCH);
1820    
1821            /* Any return code other than NOMATCH is an error. */
1822    
1823            if (rrc != MATCH_NOMATCH)
1824            {            {
1825            DPRINTF(("Recursion gave error %d\n", rrc));            DPRINTF(("Recursion gave error %d\n", rrc));
1826            if (new_recursive.offset_save != stacksave)            if (new_recursive.offset_save != stacksave)
1827              (pcre_free)(new_recursive.offset_save);              (PUBL(free))(new_recursive.offset_save);
1828            RRETURN(rrc);            RRETURN(rrc);
1829            }            }
1830    
# Line 1588  for (;;) Line 1836  for (;;)
1836        DPRINTF(("Recursion didn't match\n"));        DPRINTF(("Recursion didn't match\n"));
1837        md->recursive = new_recursive.prevrec;        md->recursive = new_recursive.prevrec;
1838        if (new_recursive.offset_save != stacksave)        if (new_recursive.offset_save != stacksave)
1839          (pcre_free)(new_recursive.offset_save);          (PUBL(free))(new_recursive.offset_save);
1840        MRRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
1841        }        }
1842    
1843      RECURSION_MATCHED:      RECURSION_MATCHED:
# Line 1658  for (;;) Line 1906  for (;;)
1906        }        }
1907      else saved_eptr = NULL;      else saved_eptr = NULL;
1908    
1909      /* If we are at the end of an assertion group, stop matching and return      /* If we are at the end of an assertion group or a non-capturing atomic
1910      MATCH_MATCH, but record the current high water mark for use by positive      group, stop matching and return MATCH_MATCH, but record the current high
1911      assertions. We also need to record the match start in case it was changed      water mark for use by positive assertions. We also need to record the match
1912      by \K. */      start in case it was changed by \K. */
1913    
1914      if (*prev == OP_ASSERT || *prev == OP_ASSERT_NOT ||      if ((*prev >= OP_ASSERT && *prev <= OP_ASSERTBACK_NOT) ||
1915          *prev == OP_ASSERTBACK || *prev == OP_ASSERTBACK_NOT)           *prev == OP_ONCE_NC)
1916        {        {
1917        md->end_match_ptr = eptr;      /* For ONCE */        md->end_match_ptr = eptr;      /* For ONCE_NC */
1918        md->end_offset_top = offset_top;        md->end_offset_top = offset_top;
1919        md->start_match_ptr = mstart;        md->start_match_ptr = mstart;
1920        MRRETURN(MATCH_MATCH);         /* Sets md->mark */        RRETURN(MATCH_MATCH);         /* Sets md->mark */
1921        }        }
1922    
1923      /* For capturing groups we have to check the group number back at the start      /* For capturing groups we have to check the group number back at the start
# Line 1702  for (;;) Line 1950  for (;;)
1950    
1951        /* Deal with capturing */        /* Deal with capturing */
1952    
1953        md->capture_last = number;        md->capture_last = (md->capture_last & OVFLMASK) | number;
1954        if (offset >= md->offset_max) md->offset_overflow = TRUE; else        if (offset >= md->offset_max) md->capture_last |= OVFLBIT; else
1955          {          {
1956          /* If offset is greater than offset_top, it means that we are          /* If offset is greater than offset_top, it means that we are
1957          "skipping" a capturing group, and that group's offsets must be marked          "skipping" a capturing group, and that group's offsets must be marked
# Line 1734  for (;;) Line 1982  for (;;)
1982      /* For an ordinary non-repeating ket, just continue at this level. This      /* For an ordinary non-repeating ket, just continue at this level. This
1983      also happens for a repeating ket if no characters were matched in the      also happens for a repeating ket if no characters were matched in the
1984      group. This is the forcible breaking of infinite loops as implemented in      group. This is the forcible breaking of infinite loops as implemented in
1985      Perl 5.005. For a non-repeating atomic group, establish a backup point by      Perl 5.005. For a non-repeating atomic group that includes captures,
1986      processing the rest of the pattern at a lower level. If this results in a      establish a backup point by processing the rest of the pattern at a lower
1987      NOMATCH return, pass MATCH_ONCE back to the original OP_ONCE level, thereby      level. If this results in a NOMATCH return, pass MATCH_ONCE back to the
1988      bypassing intermediate backup points, but resetting any captures that      original OP_ONCE level, thereby bypassing intermediate backup points, but
1989      happened along the way. */      resetting any captures that happened along the way. */
1990    
1991      if (*ecode == OP_KET || eptr == saved_eptr)      if (*ecode == OP_KET || eptr == saved_eptr)
1992        {        {
# Line 1759  for (;;) Line 2007  for (;;)
2007    
2008      if (*ecode == OP_KETRPOS)      if (*ecode == OP_KETRPOS)
2009        {        {
2010          md->start_match_ptr = mstart;    /* In case \K reset it */
2011        md->end_match_ptr = eptr;        md->end_match_ptr = eptr;
2012        md->end_offset_top = offset_top;        md->end_offset_top = offset_top;
2013        RRETURN(MATCH_KETRPOS);        RRETURN(MATCH_KETRPOS);
# Line 1783  for (;;) Line 2032  for (;;)
2032          }          }
2033        if (*prev >= OP_SBRA)    /* Could match an empty string */        if (*prev >= OP_SBRA)    /* Could match an empty string */
2034          {          {
         md->match_function_type = MATCH_CBEGROUP;  
2035          RMATCH(eptr, prev, offset_top, md, eptrb, RM50);          RMATCH(eptr, prev, offset_top, md, eptrb, RM50);
2036          RRETURN(rrc);          RRETURN(rrc);
2037          }          }
# Line 1792  for (;;) Line 2040  for (;;)
2040        }        }
2041      else  /* OP_KETRMAX */      else  /* OP_KETRMAX */
2042        {        {
       if (*prev >= OP_SBRA) md->match_function_type = MATCH_CBEGROUP;  
2043        RMATCH(eptr, prev, offset_top, md, eptrb, RM13);        RMATCH(eptr, prev, offset_top, md, eptrb, RM13);
2044        if (rrc == MATCH_ONCE && md->once_target == prev) rrc = MATCH_NOMATCH;        if (rrc == MATCH_ONCE && md->once_target == prev) rrc = MATCH_NOMATCH;
2045        if (rrc != MATCH_NOMATCH) RRETURN(rrc);        if (rrc != MATCH_NOMATCH) RRETURN(rrc);
# Line 1811  for (;;) Line 2058  for (;;)
2058      /* Not multiline mode: start of subject assertion, unless notbol. */      /* Not multiline mode: start of subject assertion, unless notbol. */
2059    
2060      case OP_CIRC:      case OP_CIRC:
2061      if (md->notbol && eptr == md->start_subject) MRRETURN(MATCH_NOMATCH);      if (md->notbol && eptr == md->start_subject) RRETURN(MATCH_NOMATCH);
2062    
2063      /* Start of subject assertion */      /* Start of subject assertion */
2064    
2065      case OP_SOD:      case OP_SOD:
2066      if (eptr != md->start_subject) MRRETURN(MATCH_NOMATCH);      if (eptr != md->start_subject) RRETURN(MATCH_NOMATCH);
2067      ecode++;      ecode++;
2068      break;      break;
2069    
2070      /* Multiline mode: start of subject unless notbol, or after any newline. */      /* Multiline mode: start of subject unless notbol, or after any newline. */
2071    
2072      case OP_CIRCM:      case OP_CIRCM:
2073      if (md->notbol && eptr == md->start_subject) MRRETURN(MATCH_NOMATCH);      if (md->notbol && eptr == md->start_subject) RRETURN(MATCH_NOMATCH);
2074      if (eptr != md->start_subject &&      if (eptr != md->start_subject &&
2075          (eptr == md->end_subject || !WAS_NEWLINE(eptr)))          (eptr == md->end_subject || !WAS_NEWLINE(eptr)))
2076        MRRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
2077      ecode++;      ecode++;
2078      break;      break;
2079    
2080      /* Start of match assertion */      /* Start of match assertion */
2081    
2082      case OP_SOM:      case OP_SOM:
2083      if (eptr != md->start_subject + md->start_offset) MRRETURN(MATCH_NOMATCH);      if (eptr != md->start_subject + md->start_offset) RRETURN(MATCH_NOMATCH);
2084      ecode++;      ecode++;
2085      break;      break;
2086    
# Line 1849  for (;;) Line 2096  for (;;)
2096    
2097      case OP_DOLLM:      case OP_DOLLM:
2098      if (eptr < md->end_subject)      if (eptr < md->end_subject)
2099        { if (!IS_NEWLINE(eptr)) MRRETURN(MATCH_NOMATCH); }        {
2100          if (!IS_NEWLINE(eptr))
2101            {
2102            if (md->partial != 0 &&
2103                eptr + 1 >= md->end_subject &&
2104                NLBLOCK->nltype == NLTYPE_FIXED &&
2105                NLBLOCK->nllen == 2 &&
2106                *eptr == NLBLOCK->nl[0])
2107              {
2108              md->hitend = TRUE;
2109              if (md->partial > 1) RRETURN(PCRE_ERROR_PARTIAL);
2110              }
2111            RRETURN(MATCH_NOMATCH);
2112            }
2113          }
2114      else      else
2115        {        {
2116        if (md->noteol) MRRETURN(MATCH_NOMATCH);        if (md->noteol) RRETURN(MATCH_NOMATCH);
2117        SCHECK_PARTIAL();        SCHECK_PARTIAL();
2118        }        }
2119      ecode++;      ecode++;
# Line 1862  for (;;) Line 2123  for (;;)
2123      subject unless noteol is set. */      subject unless noteol is set. */
2124    
2125      case OP_DOLL:      case OP_DOLL:
2126      if (md->noteol) MRRETURN(MATCH_NOMATCH);      if (md->noteol) RRETURN(MATCH_NOMATCH);
2127      if (!md->endonly) goto ASSERT_NL_OR_EOS;      if (!md->endonly) goto ASSERT_NL_OR_EOS;
2128    
2129      /* ... else fall through for endonly */      /* ... else fall through for endonly */
# Line 1870  for (;;) Line 2131  for (;;)
2131      /* End of subject assertion (\z) */      /* End of subject assertion (\z) */
2132    
2133      case OP_EOD:      case OP_EOD:
2134      if (eptr < md->end_subject) MRRETURN(MATCH_NOMATCH);      if (eptr < md->end_subject) RRETURN(MATCH_NOMATCH);
2135      SCHECK_PARTIAL();      SCHECK_PARTIAL();
2136      ecode++;      ecode++;
2137      break;      break;
# Line 1881  for (;;) Line 2142  for (;;)
2142      ASSERT_NL_OR_EOS:      ASSERT_NL_OR_EOS:
2143      if (eptr < md->end_subject &&      if (eptr < md->end_subject &&
2144          (!IS_NEWLINE(eptr) || eptr != md->end_subject - md->nllen))          (!IS_NEWLINE(eptr) || eptr != md->end_subject - md->nllen))
2145        MRRETURN(MATCH_NOMATCH);        {
2146          if (md->partial != 0 &&
2147              eptr + 1 >= md->end_subject &&
2148              NLBLOCK->nltype == NLTYPE_FIXED &&
2149              NLBLOCK->nllen == 2 &&
2150              *eptr == NLBLOCK->nl[0])
2151            {
2152            md->hitend = TRUE;
2153            if (md->partial > 1) RRETURN(PCRE_ERROR_PARTIAL);
2154            }
2155          RRETURN(MATCH_NOMATCH);
2156          }
2157    
2158      /* Either at end of string or \n before end. */      /* Either at end of string or \n before end. */
2159    
# Line 1900  for (;;) Line 2172  for (;;)
2172        be "non-word" characters. Remember the earliest consulted character for        be "non-word" characters. Remember the earliest consulted character for
2173        partial matching. */        partial matching. */
2174    
2175  #ifdef SUPPORT_UTF8  #ifdef SUPPORT_UTF
2176        if (utf8)        if (utf)
2177          {          {
2178          /* Get status of previous character */          /* Get status of previous character */
2179    
2180          if (eptr == md->start_subject) prev_is_word = FALSE; else          if (eptr == md->start_subject) prev_is_word = FALSE; else
2181            {            {
2182            USPTR lastptr = eptr - 1;            PCRE_PUCHAR lastptr = eptr - 1;
2183            while((*lastptr & 0xc0) == 0x80) lastptr--;            BACKCHAR(lastptr);
2184            if (lastptr < md->start_used_ptr) md->start_used_ptr = lastptr;            if (lastptr < md->start_used_ptr) md->start_used_ptr = lastptr;
2185            GETCHAR(c, lastptr);            GETCHAR(c, lastptr);
2186  #ifdef SUPPORT_UCP  #ifdef SUPPORT_UCP
# Line 1973  for (;;) Line 2245  for (;;)
2245              }              }
2246            else            else
2247  #endif  #endif
2248            prev_is_word = ((md->ctypes[eptr[-1]] & ctype_word) != 0);            prev_is_word = MAX_255(eptr[-1])
2249                && ((md->ctypes[eptr[-1]] & ctype_word) != 0);
2250            }            }
2251    
2252          /* Get status of next character */          /* Get status of next character */
# Line 1996  for (;;) Line 2269  for (;;)
2269            }            }
2270          else          else
2271  #endif  #endif
2272          cur_is_word = ((md->ctypes[*eptr] & ctype_word) != 0);          cur_is_word = MAX_255(*eptr)
2273              && ((md->ctypes[*eptr] & ctype_word) != 0);
2274          }          }
2275    
2276        /* Now see if the situation is what we want */        /* Now see if the situation is what we want */
2277    
2278        if ((*ecode++ == OP_WORD_BOUNDARY)?        if ((*ecode++ == OP_WORD_BOUNDARY)?
2279             cur_is_word == prev_is_word : cur_is_word != prev_is_word)             cur_is_word == prev_is_word : cur_is_word != prev_is_word)
2280          MRRETURN(MATCH_NOMATCH);          RRETURN(MATCH_NOMATCH);
2281        }        }
2282      break;      break;
2283    
2284      /* Match a single character type; inline for speed */      /* Match any single character type except newline; have to take care with
2285        CRLF newlines and partial matching. */
2286    
2287      case OP_ANY:      case OP_ANY:
2288      if (IS_NEWLINE(eptr)) MRRETURN(MATCH_NOMATCH);      if (IS_NEWLINE(eptr)) RRETURN(MATCH_NOMATCH);
2289        if (md->partial != 0 &&
2290            eptr + 1 >= md->end_subject &&
2291            NLBLOCK->nltype == NLTYPE_FIXED &&
2292            NLBLOCK->nllen == 2 &&
2293            *eptr == NLBLOCK->nl[0])
2294          {
2295          md->hitend = TRUE;
2296          if (md->partial > 1) RRETURN(PCRE_ERROR_PARTIAL);
2297          }
2298    
2299      /* Fall through */      /* Fall through */
2300    
2301        /* Match any single character whatsoever. */
2302    
2303      case OP_ALLANY:      case OP_ALLANY:
2304      if (eptr >= md->end_subject)   /* DO NOT merge the eptr++ here; it must */      if (eptr >= md->end_subject)   /* DO NOT merge the eptr++ here; it must */
2305        {                            /* not be updated before SCHECK_PARTIAL. */        {                            /* not be updated before SCHECK_PARTIAL. */
2306        SCHECK_PARTIAL();        SCHECK_PARTIAL();
2307        MRRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
2308        }        }
2309      eptr++;      eptr++;
2310      if (utf8) while (eptr < md->end_subject && (*eptr & 0xc0) == 0x80) eptr++;  #ifdef SUPPORT_UTF
2311        if (utf) ACROSSCHAR(eptr < md->end_subject, *eptr, eptr++);
2312    #endif
2313      ecode++;      ecode++;
2314      break;      break;
2315    
# Line 2031  for (;;) Line 2320  for (;;)
2320      if (eptr >= md->end_subject)   /* DO NOT merge the eptr++ here; it must */      if (eptr >= md->end_subject)   /* DO NOT merge the eptr++ here; it must */
2321        {                            /* not be updated before SCHECK_PARTIAL. */        {                            /* not be updated before SCHECK_PARTIAL. */
2322        SCHECK_PARTIAL();        SCHECK_PARTIAL();
2323        MRRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
2324        }        }
2325      eptr++;      eptr++;
2326      ecode++;      ecode++;
# Line 2041  for (;;) Line 2330  for (;;)
2330      if (eptr >= md->end_subject)      if (eptr >= md->end_subject)
2331        {        {
2332        SCHECK_PARTIAL();        SCHECK_PARTIAL();
2333        MRRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
2334        }        }
2335      GETCHARINCTEST(c, eptr);      GETCHARINCTEST(c, eptr);
2336      if (      if (
2337  #ifdef SUPPORT_UTF8  #if defined SUPPORT_UTF || !(defined COMPILE_PCRE8)
2338         c < 256 &&         c < 256 &&
2339  #endif  #endif
2340         (md->ctypes[c] & ctype_digit) != 0         (md->ctypes[c] & ctype_digit) != 0
2341         )         )
2342        MRRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
2343      ecode++;      ecode++;
2344      break;      break;
2345    
# Line 2058  for (;;) Line 2347  for (;;)
2347      if (eptr >= md->end_subject)      if (eptr >= md->end_subject)
2348        {        {
2349        SCHECK_PARTIAL();        SCHECK_PARTIAL();
2350        MRRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
2351        }        }
2352      GETCHARINCTEST(c, eptr);      GETCHARINCTEST(c, eptr);
2353      if (      if (
2354  #ifdef SUPPORT_UTF8  #if defined SUPPORT_UTF || !(defined COMPILE_PCRE8)
2355         c >= 256 ||         c > 255 ||
2356  #endif  #endif
2357         (md->ctypes[c] & ctype_digit) == 0         (md->ctypes[c] & ctype_digit) == 0
2358         )         )
2359        MRRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
2360      ecode++;      ecode++;
2361      break;      break;
2362    
# Line 2075  for (;;) Line 2364  for (;;)
2364      if (eptr >= md->end_subject)      if (eptr >= md->end_subject)
2365        {        {
2366        SCHECK_PARTIAL();        SCHECK_PARTIAL();
2367        MRRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
2368        }        }
2369      GETCHARINCTEST(c, eptr);      GETCHARINCTEST(c, eptr);
2370      if (      if (
2371  #ifdef SUPPORT_UTF8  #if defined SUPPORT_UTF || !(defined COMPILE_PCRE8)
2372         c < 256 &&         c < 256 &&
2373  #endif  #endif
2374         (md->ctypes[c] & ctype_space) != 0         (md->ctypes[c] & ctype_space) != 0
2375         )         )
2376        MRRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
2377      ecode++;      ecode++;
2378      break;      break;
2379    
# Line 2092  for (;;) Line 2381  for (;;)
2381      if (eptr >= md->end_subject)      if (eptr >= md->end_subject)
2382        {        {
2383        SCHECK_PARTIAL();        SCHECK_PARTIAL();
2384        MRRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
2385        }        }
2386      GETCHARINCTEST(c, eptr);      GETCHARINCTEST(c, eptr);
2387      if (      if (
2388  #ifdef SUPPORT_UTF8  #if defined SUPPORT_UTF || !(defined COMPILE_PCRE8)
2389         c >= 256 ||         c > 255 ||
2390  #endif  #endif
2391         (md->ctypes[c] & ctype_space) == 0         (md->ctypes[c] & ctype_space) == 0
2392         )         )
2393        MRRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
2394      ecode++;      ecode++;
2395      break;      break;
2396    
# Line 2109  for (;;) Line 2398  for (;;)
2398      if (eptr >= md->end_subject)      if (eptr >= md->end_subject)
2399        {        {
2400        SCHECK_PARTIAL();        SCHECK_PARTIAL();
2401        MRRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
2402        }        }
2403      GETCHARINCTEST(c, eptr);      GETCHARINCTEST(c, eptr);
2404      if (      if (
2405  #ifdef SUPPORT_UTF8  #if defined SUPPORT_UTF || !(defined COMPILE_PCRE8)
2406         c < 256 &&         c < 256 &&
2407  #endif  #endif
2408         (md->ctypes[c] & ctype_word) != 0         (md->ctypes[c] & ctype_word) != 0
2409         )         )
2410        MRRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
2411      ecode++;      ecode++;
2412      break;      break;
2413    
# Line 2126  for (;;) Line 2415  for (;;)
2415      if (eptr >= md->end_subject)      if (eptr >= md->end_subject)
2416        {        {
2417        SCHECK_PARTIAL();        SCHECK_PARTIAL();
2418        MRRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
2419        }        }
2420      GETCHARINCTEST(c, eptr);      GETCHARINCTEST(c, eptr);
2421      if (      if (
2422  #ifdef SUPPORT_UTF8  #if defined SUPPORT_UTF || !(defined COMPILE_PCRE8)
2423         c >= 256 ||         c > 255 ||
2424  #endif  #endif
2425         (md->ctypes[c] & ctype_word) == 0         (md->ctypes[c] & ctype_word) == 0
2426         )         )
2427        MRRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
2428      ecode++;      ecode++;
2429      break;      break;
2430    
# Line 2143  for (;;) Line 2432  for (;;)
2432      if (eptr >= md->end_subject)      if (eptr >= md->end_subject)
2433        {        {
2434        SCHECK_PARTIAL();        SCHECK_PARTIAL();
2435        MRRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
2436        }        }
2437      GETCHARINCTEST(c, eptr);      GETCHARINCTEST(c, eptr);
2438      switch(c)      switch(c)
2439        {        {
2440        default: MRRETURN(MATCH_NOMATCH);        default: RRETURN(MATCH_NOMATCH);
2441    
2442        case 0x000d:        case CHAR_CR:
2443        if (eptr < md->end_subject && *eptr == 0x0a) eptr++;        if (eptr >= md->end_subject)
2444            {
2445            SCHECK_PARTIAL();
2446            }
2447          else if (*eptr == CHAR_LF) eptr++;
2448        break;        break;
2449    
2450        case 0x000a:        case CHAR_LF:
2451        break;        break;
2452    
2453        case 0x000b:        case CHAR_VT:
2454        case 0x000c:        case CHAR_FF:
2455        case 0x0085:        case CHAR_NEL:
2456    #ifndef EBCDIC
2457        case 0x2028:        case 0x2028:
2458        case 0x2029:        case 0x2029:
2459        if (md->bsr_anycrlf) MRRETURN(MATCH_NOMATCH);  #endif  /* Not EBCDIC */
2460          if (md->bsr_anycrlf) RRETURN(MATCH_NOMATCH);
2461        break;        break;
2462        }        }
2463      ecode++;      ecode++;
# Line 2172  for (;;) Line 2467  for (;;)
2467      if (eptr >= md->end_subject)      if (eptr >= md->end_subject)
2468        {        {
2469        SCHECK_PARTIAL();        SCHECK_PARTIAL();
2470        MRRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
2471        }        }
2472      GETCHARINCTEST(c, eptr);      GETCHARINCTEST(c, eptr);
2473      switch(c)      switch(c)
2474        {        {
2475          HSPACE_CASES: RRETURN(MATCH_NOMATCH);  /* Byte and multibyte cases */
2476        default: break;        default: break;
       case 0x09:      /* HT */  
       case 0x20:      /* SPACE */  
       case 0xa0:      /* NBSP */  
       case 0x1680:    /* OGHAM SPACE MARK */  
       case 0x180e:    /* MONGOLIAN VOWEL SEPARATOR */  
       case 0x2000:    /* EN QUAD */  
       case 0x2001:    /* EM QUAD */  
       case 0x2002:    /* EN SPACE */  
       case 0x2003:    /* EM SPACE */  
       case 0x2004:    /* THREE-PER-EM SPACE */  
       case 0x2005:    /* FOUR-PER-EM SPACE */  
       case 0x2006:    /* SIX-PER-EM SPACE */  
       case 0x2007:    /* FIGURE SPACE */  
       case 0x2008:    /* PUNCTUATION SPACE */  
       case 0x2009:    /* THIN SPACE */  
       case 0x200A:    /* HAIR SPACE */  
       case 0x202f:    /* NARROW NO-BREAK SPACE */  
       case 0x205f:    /* MEDIUM MATHEMATICAL SPACE */  
       case 0x3000:    /* IDEOGRAPHIC SPACE */  
       MRRETURN(MATCH_NOMATCH);  
2477        }        }
2478      ecode++;      ecode++;
2479      break;      break;
# Line 2206  for (;;) Line 2482  for (;;)
2482      if (eptr >= md->end_subject)      if (eptr >= md->end_subject)
2483        {        {
2484        SCHECK_PARTIAL();        SCHECK_PARTIAL();
2485        MRRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
2486        }        }
2487      GETCHARINCTEST(c, eptr);      GETCHARINCTEST(c, eptr);
2488      switch(c)      switch(c)
2489        {        {
2490        default: MRRETURN(MATCH_NOMATCH);        HSPACE_CASES: break;  /* Byte and multibyte cases */
2491        case 0x09:      /* HT */        default: RRETURN(MATCH_NOMATCH);
       case 0x20:      /* SPACE */  
       case 0xa0:      /* NBSP */  
       case 0x1680:    /* OGHAM SPACE MARK */  
       case 0x180e:    /* MONGOLIAN VOWEL SEPARATOR */  
       case 0x2000:    /* EN QUAD */  
       case 0x2001:    /* EM QUAD */  
       case 0x2002:    /* EN SPACE */  
       case 0x2003:    /* EM SPACE */  
       case 0x2004:    /* THREE-PER-EM SPACE */  
       case 0x2005:    /* FOUR-PER-EM SPACE */  
       case 0x2006:    /* SIX-PER-EM SPACE */  
       case 0x2007:    /* FIGURE SPACE */  
       case 0x2008:    /* PUNCTUATION SPACE */  
       case 0x2009:    /* THIN SPACE */  
       case 0x200A:    /* HAIR SPACE */  
       case 0x202f:    /* NARROW NO-BREAK SPACE */  
       case 0x205f:    /* MEDIUM MATHEMATICAL SPACE */  
       case 0x3000:    /* IDEOGRAPHIC SPACE */  
       break;  
2492        }        }
2493      ecode++;      ecode++;
2494      break;      break;
# Line 2240  for (;;) Line 2497  for (;;)
2497      if (eptr >= md->end_subject)      if (eptr >= md->end_subject)
2498        {        {
2499        SCHECK_PARTIAL();        SCHECK_PARTIAL();
2500        MRRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
2501        }        }
2502      GETCHARINCTEST(c, eptr);      GETCHARINCTEST(c, eptr);
2503      switch(c)      switch(c)
2504        {        {
2505          VSPACE_CASES: RRETURN(MATCH_NOMATCH);
2506        default: break;        default: break;
       case 0x0a:      /* LF */  
       case 0x0b:      /* VT */  
       case 0x0c:      /* FF */  
       case 0x0d:      /* CR */  
       case 0x85:      /* NEL */  
       case 0x2028:    /* LINE SEPARATOR */  
       case 0x2029:    /* PARAGRAPH SEPARATOR */  
       MRRETURN(MATCH_NOMATCH);  
2507        }        }
2508      ecode++;      ecode++;
2509      break;      break;
# Line 2262  for (;;) Line 2512  for (;;)
2512      if (eptr >= md->end_subject)      if (eptr >= md->end_subject)
2513        {        {
2514        SCHECK_PARTIAL();        SCHECK_PARTIAL();
2515        MRRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
2516        }        }
2517      GETCHARINCTEST(c, eptr);      GETCHARINCTEST(c, eptr);
2518      switch(c)      switch(c)
2519        {        {
2520        default: MRRETURN(MATCH_NOMATCH);        VSPACE_CASES: break;
2521        case 0x0a:      /* LF */        default: RRETURN(MATCH_NOMATCH);
       case 0x0b:      /* VT */  
       case 0x0c:      /* FF */  
       case 0x0d:      /* CR */  
       case 0x85:      /* NEL */  
       case 0x2028:    /* LINE SEPARATOR */  
       case 0x2029:    /* PARAGRAPH SEPARATOR */  
       break;  
2522        }        }
2523      ecode++;      ecode++;
2524      break;      break;
# Line 2289  for (;;) Line 2532  for (;;)
2532      if (eptr >= md->end_subject)      if (eptr >= md->end_subject)
2533        {        {
2534        SCHECK_PARTIAL();        SCHECK_PARTIAL();
2535        MRRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
2536        }        }
2537      GETCHARINCTEST(c, eptr);      GETCHARINCTEST(c, eptr);
2538        {        {
2539          const pcre_uint32 *cp;
2540        const ucd_record *prop = GET_UCD(c);        const ucd_record *prop = GET_UCD(c);
2541    
2542        switch(ecode[1])        switch(ecode[1])
2543          {          {
2544          case PT_ANY:          case PT_ANY:
2545          if (op == OP_NOTPROP) MRRETURN(MATCH_NOMATCH);          if (op == OP_NOTPROP) RRETURN(MATCH_NOMATCH);
2546          break;          break;
2547    
2548          case PT_LAMP:          case PT_LAMP:
2549          if ((prop->chartype == ucp_Lu ||          if ((prop->chartype == ucp_Lu ||
2550               prop->chartype == ucp_Ll ||               prop->chartype == ucp_Ll ||
2551               prop->chartype == ucp_Lt) == (op == OP_NOTPROP))               prop->chartype == ucp_Lt) == (op == OP_NOTPROP))
2552            MRRETURN(MATCH_NOMATCH);            RRETURN(MATCH_NOMATCH);
2553          break;          break;
2554    
2555          case PT_GC:          case PT_GC:
2556          if ((ecode[2] != _pcre_ucp_gentype[prop->chartype]) == (op == OP_PROP))          if ((ecode[2] != PRIV(ucp_gentype)[prop->chartype]) == (op == OP_PROP))
2557            MRRETURN(MATCH_NOMATCH);            RRETURN(MATCH_NOMATCH);
2558          break;          break;
2559    
2560          case PT_PC:          case PT_PC:
2561          if ((ecode[2] != prop->chartype) == (op == OP_PROP))          if ((ecode[2] != prop->chartype) == (op == OP_PROP))
2562            MRRETURN(MATCH_NOMATCH);            RRETURN(MATCH_NOMATCH);
2563          break;          break;
2564    
2565          case PT_SC:          case PT_SC:
2566          if ((ecode[2] != prop->script) == (op == OP_PROP))          if ((ecode[2] != prop->script) == (op == OP_PROP))
2567            MRRETURN(MATCH_NOMATCH);            RRETURN(MATCH_NOMATCH);
2568          break;          break;
2569    
2570          /* These are specials */          /* These are specials */
2571    
2572          case PT_ALNUM:          case PT_ALNUM:
2573          if ((_pcre_ucp_gentype[prop->chartype] == ucp_L ||          if ((PRIV(ucp_gentype)[prop->chartype] == ucp_L ||
2574               _pcre_ucp_gentype[prop->chartype] == ucp_N) == (op == OP_NOTPROP))               PRIV(ucp_gentype)[prop->chartype] == ucp_N) == (op == OP_NOTPROP))
2575            MRRETURN(MATCH_NOMATCH);            RRETURN(MATCH_NOMATCH);
2576          break;          break;
2577    
2578          case PT_SPACE:    /* Perl space */          /* Perl space used to exclude VT, but from Perl 5.18 it is included,
2579          if ((_pcre_ucp_gentype[prop->chartype] == ucp_Z ||          which means that Perl space and POSIX space are now identical. PCRE
2580               c == CHAR_HT || c == CHAR_NL || c == CHAR_FF || c == CHAR_CR)          was changed at release 8.34. */
                == (op == OP_NOTPROP))  
           MRRETURN(MATCH_NOMATCH);  
         break;  
2581    
2582            case PT_SPACE:    /* Perl space */
2583          case PT_PXSPACE:  /* POSIX space */          case PT_PXSPACE:  /* POSIX space */
2584          if ((_pcre_ucp_gentype[prop->chartype] == ucp_Z ||          switch(c)
2585               c == CHAR_HT || c == CHAR_NL || c == CHAR_VT ||            {
2586               c == CHAR_FF || c == CHAR_CR)            HSPACE_CASES:
2587                 == (op == OP_NOTPROP))            VSPACE_CASES:
2588            MRRETURN(MATCH_NOMATCH);            if (op == OP_NOTPROP) RRETURN(MATCH_NOMATCH);
2589              break;
2590    
2591              default:
2592              if ((PRIV(ucp_gentype)[prop->chartype] == ucp_Z) ==
2593                (op == OP_NOTPROP)) RRETURN(MATCH_NOMATCH);
2594              break;
2595              }
2596          break;          break;
2597    
2598          case PT_WORD:          case PT_WORD:
2599          if ((_pcre_ucp_gentype[prop->chartype] == ucp_L ||          if ((PRIV(ucp_gentype)[prop->chartype] == ucp_L ||
2600               _pcre_ucp_gentype[prop->chartype] == ucp_N ||               PRIV(ucp_gentype)[prop->chartype] == ucp_N ||
2601               c == CHAR_UNDERSCORE) == (op == OP_NOTPROP))               c == CHAR_UNDERSCORE) == (op == OP_NOTPROP))
2602            MRRETURN(MATCH_NOMATCH);            RRETURN(MATCH_NOMATCH);
2603            break;
2604    
2605            case PT_CLIST:
2606            cp = PRIV(ucd_caseless_sets) + ecode[2];
2607            for (;;)
2608              {
2609              if (c < *cp)
2610                { if (op == OP_PROP) { RRETURN(MATCH_NOMATCH); } else break; }
2611              if (c == *cp++)
2612                { if (op == OP_PROP) break; else { RRETURN(MATCH_NOMATCH); } }
2613              }
2614            break;
2615    
2616            case PT_UCNC:
2617            if ((c == CHAR_DOLLAR_SIGN || c == CHAR_COMMERCIAL_AT ||
2618                 c == CHAR_GRAVE_ACCENT || (c >= 0xa0 && c <= 0xd7ff) ||
2619                 c >= 0xe000) == (op == OP_NOTPROP))
2620              RRETURN(MATCH_NOMATCH);
2621          break;          break;
2622    
2623          /* This should never occur */          /* This should never occur */
# Line 2370  for (;;) Line 2637  for (;;)
2637      if (eptr >= md->end_subject)      if (eptr >= md->end_subject)
2638        {        {
2639        SCHECK_PARTIAL();        SCHECK_PARTIAL();
2640        MRRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
2641        }        }
2642      GETCHARINCTEST(c, eptr);      else
     if (UCD_CATEGORY(c) == ucp_M) MRRETURN(MATCH_NOMATCH);  
     while (eptr < md->end_subject)  
2643        {        {
2644        int len = 1;        int lgb, rgb;
2645        if (!utf8) c = *eptr; else { GETCHARLEN(c, eptr, len); }        GETCHARINCTEST(c, eptr);
2646        if (UCD_CATEGORY(c) != ucp_M) break;        lgb = UCD_GRAPHBREAK(c);
2647        eptr += len;        while (eptr < md->end_subject)
2648            {
2649            int len = 1;
2650            if (!utf) c = *eptr; else { GETCHARLEN(c, eptr, len); }
2651            rgb = UCD_GRAPHBREAK(c);
2652            if ((PRIV(ucp_gbtable)[lgb] & (1 << rgb)) == 0) break;
2653            lgb = rgb;
2654            eptr += len;
2655            }
2656        }        }
2657        CHECK_PARTIAL();
2658      ecode++;      ecode++;
2659      break;      break;
2660  #endif  #endif  /* SUPPORT_UCP */
2661    
2662    
2663      /* Match a back reference, possibly repeatedly. Look past the end of the      /* Match a back reference, possibly repeatedly. Look past the end of the
# Line 2392  for (;;) Line 2666  for (;;)
2666      similar code to character type repeats - written out again for speed.      similar code to character type repeats - written out again for speed.
2667      However, if the referenced string is the empty string, always treat      However, if the referenced string is the empty string, always treat
2668      it as matched, any number of times (otherwise there could be infinite      it as matched, any number of times (otherwise there could be infinite
2669      loops). */      loops). If the reference is unset, there are two possibilities:
   
     case OP_REF:  
     case OP_REFI:  
     caseless = op == OP_REFI;  
     offset = GET2(ecode, 1) << 1;               /* Doubled ref number */  
     ecode += 3;  
   
     /* If the reference is unset, there are two possibilities:  
2670    
2671      (a) In the default, Perl-compatible state, set the length negative;      (a) In the default, Perl-compatible state, set the length negative;
2672      this ensures that every attempt at a match fails. We can't just fail      this ensures that every attempt at a match fails. We can't just fail
# Line 2410  for (;;) Line 2676  for (;;)
2676      so that the back reference matches an empty string.      so that the back reference matches an empty string.
2677    
2678      Otherwise, set the length to the length of what was matched by the      Otherwise, set the length to the length of what was matched by the
2679      referenced subpattern. */      referenced subpattern.
2680    
2681        The OP_REF and OP_REFI opcodes are used for a reference to a numbered group
2682        or to a non-duplicated named group. For a duplicated named group, OP_DNREF
2683        and OP_DNREFI are used. In this case we must scan the list of groups to
2684        which the name refers, and use the first one that is set. */
2685    
2686        case OP_DNREF:
2687        case OP_DNREFI:
2688        caseless = op == OP_DNREFI;
2689          {
2690          int count = GET2(ecode, 1+IMM2_SIZE);
2691          pcre_uchar *slot = md->name_table + GET2(ecode, 1) * md->name_entry_size;
2692          ecode += 1 + 2*IMM2_SIZE;
2693    
2694          /* Setting the default length first and initializing 'offset' avoids
2695          compiler warnings in the REF_REPEAT code. */
2696    
2697          length = (md->jscript_compat)? 0 : -1;
2698          offset = 0;
2699    
2700          while (count-- > 0)
2701            {
2702            offset = GET2(slot, 0) << 1;
2703            if (offset < offset_top && md->offset_vector[offset] >= 0)
2704              {
2705              length = md->offset_vector[offset+1] - md->offset_vector[offset];
2706              break;
2707              }
2708            slot += md->name_entry_size;
2709            }
2710          }
2711        goto REF_REPEAT;
2712    
2713        case OP_REF:
2714        case OP_REFI:
2715        caseless = op == OP_REFI;
2716        offset = GET2(ecode, 1) << 1;               /* Doubled ref number */
2717        ecode += 1 + IMM2_SIZE;
2718      if (offset >= offset_top || md->offset_vector[offset] < 0)      if (offset >= offset_top || md->offset_vector[offset] < 0)
2719        length = (md->jscript_compat)? 0 : -1;        length = (md->jscript_compat)? 0 : -1;
2720      else      else
# Line 2419  for (;;) Line 2722  for (;;)
2722    
2723      /* Set up for repetition, or handle the non-repeated case */      /* Set up for repetition, or handle the non-repeated case */
2724    
2725        REF_REPEAT:
2726      switch (*ecode)      switch (*ecode)
2727        {        {
2728        case OP_CRSTAR:        case OP_CRSTAR:
# Line 2438  for (;;) Line 2742  for (;;)
2742        case OP_CRMINRANGE:        case OP_CRMINRANGE:
2743        minimize = (*ecode == OP_CRMINRANGE);        minimize = (*ecode == OP_CRMINRANGE);
2744        min = GET2(ecode, 1);        min = GET2(ecode, 1);
2745        max = GET2(ecode, 3);        max = GET2(ecode, 1 + IMM2_SIZE);
2746        if (max == 0) max = INT_MAX;        if (max == 0) max = INT_MAX;
2747        ecode += 5;        ecode += 1 + 2 * IMM2_SIZE;
2748        break;        break;
2749    
2750        default:               /* No repeat follows */        default:               /* No repeat follows */
2751        if ((length = match_ref(offset, eptr, length, md, caseless)) < 0)        if ((length = match_ref(offset, eptr, length, md, caseless)) < 0)
2752          {          {
2753            if (length == -2) eptr = md->end_subject;   /* Partial match */
2754          CHECK_PARTIAL();          CHECK_PARTIAL();
2755          MRRETURN(MATCH_NOMATCH);          RRETURN(MATCH_NOMATCH);
2756          }          }
2757        eptr += length;        eptr += length;
2758        continue;              /* With the main loop */        continue;              /* With the main loop */
2759        }        }
2760    
2761      /* Handle repeated back references. If the length of the reference is      /* Handle repeated back references. If the length of the reference is
2762      zero, just continue with the main loop. */      zero, just continue with the main loop. If the length is negative, it
2763        means the reference is unset in non-Java-compatible mode. If the minimum is
2764        zero, we can continue at the same level without recursion. For any other
2765        minimum, carrying on will result in NOMATCH. */
2766    
2767      if (length == 0) continue;      if (length == 0) continue;
2768        if (length < 0 && min == 0) continue;
2769    
2770      /* First, ensure the minimum number of matches are present. We get back      /* First, ensure the minimum number of matches are present. We get back
2771      the length of the reference string explicitly rather than passing the      the length of the reference string explicitly rather than passing the
# Line 2467  for (;;) Line 2776  for (;;)
2776        int slength;        int slength;
2777        if ((slength = match_ref(offset, eptr, length, md, caseless)) < 0)        if ((slength = match_ref(offset, eptr, length, md, caseless)) < 0)
2778          {          {
2779            if (slength == -2) eptr = md->end_subject;   /* Partial match */
2780          CHECK_PARTIAL();          CHECK_PARTIAL();
2781          MRRETURN(MATCH_NOMATCH);          RRETURN(MATCH_NOMATCH);
2782          }          }
2783        eptr += slength;        eptr += slength;
2784        }        }
# Line 2487  for (;;) Line 2797  for (;;)
2797          int slength;          int slength;
2798          RMATCH(eptr, ecode, offset_top, md, eptrb, RM14);          RMATCH(eptr, ecode, offset_top, md, eptrb, RM14);
2799          if (rrc != MATCH_NOMATCH) RRETURN(rrc);          if (rrc != MATCH_NOMATCH) RRETURN(rrc);
2800          if (fi >= max) MRRETURN(MATCH_NOMATCH);          if (fi >= max) RRETURN(MATCH_NOMATCH);
2801          if ((slength = match_ref(offset, eptr, length, md, caseless)) < 0)          if ((slength = match_ref(offset, eptr, length, md, caseless)) < 0)
2802            {            {
2803              if (slength == -2) eptr = md->end_subject;   /* Partial match */
2804            CHECK_PARTIAL();            CHECK_PARTIAL();
2805            MRRETURN(MATCH_NOMATCH);            RRETURN(MATCH_NOMATCH);
2806            }            }
2807          eptr += slength;          eptr += slength;
2808          }          }
# Line 2508  for (;;) Line 2819  for (;;)
2819          int slength;          int slength;
2820          if ((slength = match_ref(offset, eptr, length, md, caseless)) < 0)          if ((slength = match_ref(offset, eptr, length, md, caseless)) < 0)
2821            {            {
2822            CHECK_PARTIAL();            /* Can't use CHECK_PARTIAL because we don't want to update eptr in
2823              the soft partial matching case. */
2824    
2825              if (slength == -2 && md->partial != 0 &&
2826                  md->end_subject > md->start_used_ptr)
2827                {
2828                md->hitend = TRUE;
2829                if (md->partial > 1) RRETURN(PCRE_ERROR_PARTIAL);
2830                }
2831            break;            break;
2832            }            }
2833          eptr += slength;          eptr += slength;
2834          }          }
2835    
2836        while (eptr >= pp)        while (eptr >= pp)
2837          {          {
2838          RMATCH(eptr, ecode, offset_top, md, eptrb, RM15);          RMATCH(eptr, ecode, offset_top, md, eptrb, RM15);
2839          if (rrc != MATCH_NOMATCH) RRETURN(rrc);          if (rrc != MATCH_NOMATCH) RRETURN(rrc);
2840          eptr -= length;          eptr -= length;
2841          }          }
2842        MRRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
2843        }        }
2844      /* Control never gets here */      /* Control never gets here */
2845    
# Line 2537  for (;;) Line 2857  for (;;)
2857      case OP_NCLASS:      case OP_NCLASS:
2858      case OP_CLASS:      case OP_CLASS:
2859        {        {
2860          /* The data variable is saved across frames, so the byte map needs to
2861          be stored there. */
2862    #define BYTE_MAP ((pcre_uint8 *)data)
2863        data = ecode + 1;                /* Save for matching */        data = ecode + 1;                /* Save for matching */
2864        ecode += 33;                     /* Advance past the item */        ecode += 1 + (32 / sizeof(pcre_uchar)); /* Advance past the item */
2865    
2866        switch (*ecode)        switch (*ecode)
2867          {          {
# Line 2548  for (;;) Line 2871  for (;;)
2871          case OP_CRMINPLUS:          case OP_CRMINPLUS:
2872          case OP_CRQUERY:          case OP_CRQUERY:
2873          case OP_CRMINQUERY:          case OP_CRMINQUERY:
2874            case OP_CRPOSSTAR:
2875            case OP_CRPOSPLUS:
2876            case OP_CRPOSQUERY:
2877          c = *ecode++ - OP_CRSTAR;          c = *ecode++ - OP_CRSTAR;
2878          minimize = (c & 1) != 0;          if (c < OP_CRPOSSTAR - OP_CRSTAR) minimize = (c & 1) != 0;
2879            else possessive = TRUE;
2880          min = rep_min[c];                 /* Pick up values from tables; */          min = rep_min[c];                 /* Pick up values from tables; */
2881          max = rep_max[c];                 /* zero for max => infinity */          max = rep_max[c];                 /* zero for max => infinity */
2882          if (max == 0) max = INT_MAX;          if (max == 0) max = INT_MAX;
# Line 2557  for (;;) Line 2884  for (;;)
2884    
2885          case OP_CRRANGE:          case OP_CRRANGE:
2886          case OP_CRMINRANGE:          case OP_CRMINRANGE:
2887            case OP_CRPOSRANGE:
2888          minimize = (*ecode == OP_CRMINRANGE);          minimize = (*ecode == OP_CRMINRANGE);
2889            possessive = (*ecode == OP_CRPOSRANGE);
2890          min = GET2(ecode, 1);          min = GET2(ecode, 1);
2891          max = GET2(ecode, 3);          max = GET2(ecode, 1 + IMM2_SIZE);
2892          if (max == 0) max = INT_MAX;          if (max == 0) max = INT_MAX;
2893          ecode += 5;          ecode += 1 + 2 * IMM2_SIZE;
2894          break;          break;
2895    
2896          default:               /* No repeat follows */          default:               /* No repeat follows */
# Line 2571  for (;;) Line 2900  for (;;)
2900    
2901        /* First, ensure the minimum number of matches are present. */        /* First, ensure the minimum number of matches are present. */
2902    
2903  #ifdef SUPPORT_UTF8  #ifdef SUPPORT_UTF
2904        /* UTF-8 mode */        if (utf)
       if (utf8)  
2905          {          {
2906          for (i = 1; i <= min; i++)          for (i = 1; i <= min; i++)
2907            {            {
2908            if (eptr >= md->end_subject)            if (eptr >= md->end_subject)
2909              {              {
2910              SCHECK_PARTIAL();              SCHECK_PARTIAL();
2911              MRRETURN(MATCH_NOMATCH);              RRETURN(MATCH_NOMATCH);
2912              }              }
2913            GETCHARINC(c, eptr);            GETCHARINC(c, eptr);
2914            if (c > 255)            if (c > 255)
2915              {              {
2916              if (op == OP_CLASS) MRRETURN(MATCH_NOMATCH);              if (op == OP_CLASS) RRETURN(MATCH_NOMATCH);
2917              }              }
2918            else            else
2919              {              if ((BYTE_MAP[c/8] & (1 << (c&7))) == 0) RRETURN(MATCH_NOMATCH);
             if ((data[c/8] & (1 << (c&7))) == 0) MRRETURN(MATCH_NOMATCH);  
             }  
2920            }            }
2921          }          }
2922        else        else
2923  #endif  #endif
2924        /* Not UTF-8 mode */        /* Not UTF mode */
2925          {          {
2926          for (i = 1; i <= min; i++)          for (i = 1; i <= min; i++)
2927            {            {
2928            if (eptr >= md->end_subject)            if (eptr >= md->end_subject)
2929              {              {
2930              SCHECK_PARTIAL();              SCHECK_PARTIAL();
2931              MRRETURN(MATCH_NOMATCH);              RRETURN(MATCH_NOMATCH);
2932              }              }
2933            c = *eptr++;            c = *eptr++;
2934            if ((data[c/8] & (1 << (c&7))) == 0) MRRETURN(MATCH_NOMATCH);  #ifndef COMPILE_PCRE8
2935              if (c > 255)
2936                {
2937                if (op == OP_CLASS) RRETURN(MATCH_NOMATCH);
2938                }
2939              else
2940    #endif
2941                if ((BYTE_MAP[c/8] & (1 << (c&7))) == 0) RRETURN(MATCH_NOMATCH);
2942            }            }
2943          }          }
2944    
# Line 2619  for (;;) Line 2952  for (;;)
2952    
2953        if (minimize)        if (minimize)
2954          {          {
2955  #ifdef SUPPORT_UTF8  #ifdef SUPPORT_UTF
2956          /* UTF-8 mode */          if (utf)
         if (utf8)  
2957            {            {
2958            for (fi = min;; fi++)            for (fi = min;; fi++)
2959              {              {
2960              RMATCH(eptr, ecode, offset_top, md, eptrb, RM16);              RMATCH(eptr, ecode, offset_top, md, eptrb, RM16);
2961              if (rrc != MATCH_NOMATCH) RRETURN(rrc);              if (rrc != MATCH_NOMATCH) RRETURN(rrc);
2962              if (fi >= max) MRRETURN(MATCH_NOMATCH);              if (fi >= max) RRETURN(MATCH_NOMATCH);
2963              if (eptr >= md->end_subject)              if (eptr >= md->end_subject)
2964                {                {
2965                SCHECK_PARTIAL();                SCHECK_PARTIAL();
2966                MRRETURN(MATCH_NOMATCH);                RRETURN(MATCH_NOMATCH);
2967                }                }
2968              GETCHARINC(c, eptr);              GETCHARINC(c, eptr);
2969              if (c > 255)              if (c > 255)
2970                {                {
2971                if (op == OP_CLASS) MRRETURN(MATCH_NOMATCH);                if (op == OP_CLASS) RRETURN(MATCH_NOMATCH);
2972                }                }
2973              else              else
2974                {                if ((BYTE_MAP[c/8] & (1 << (c&7))) == 0) RRETURN(MATCH_NOMATCH);
               if ((data[c/8] & (1 << (c&7))) == 0) MRRETURN(MATCH_NOMATCH);  
               }  
2975              }              }
2976            }            }
2977          else          else
2978  #endif  #endif
2979          /* Not UTF-8 mode */          /* Not UTF mode */
2980            {            {
2981            for (fi = min;; fi++)            for (fi = min;; fi++)
2982              {              {
2983              RMATCH(eptr, ecode, offset_top, md, eptrb, RM17);              RMATCH(eptr, ecode, offset_top, md, eptrb, RM17);
2984              if (rrc != MATCH_NOMATCH) RRETURN(rrc);              if (rrc != MATCH_NOMATCH) RRETURN(rrc);
2985              if (fi >= max) MRRETURN(MATCH_NOMATCH);              if (fi >= max) RRETURN(MATCH_NOMATCH);
2986              if (eptr >= md->end_subject)              if (eptr >= md->end_subject)
2987                {                {
2988                SCHECK_PARTIAL();                SCHECK_PARTIAL();
2989                MRRETURN(MATCH_NOMATCH);                RRETURN(MATCH_NOMATCH);
2990                }                }
2991              c = *eptr++;              c = *eptr++;
2992              if ((data[c/8] & (1 << (c&7))) == 0) MRRETURN(MATCH_NOMATCH);  #ifndef COMPILE_PCRE8
2993                if (c > 255)
2994                  {
2995                  if (op == OP_CLASS) RRETURN(MATCH_NOMATCH);
2996                  }
2997                else
2998    #endif
2999                  if ((BYTE_MAP[c/8] & (1 << (c&7))) == 0) RRETURN(MATCH_NOMATCH);
3000              }              }
3001            }            }
3002          /* Control never gets here */          /* Control never gets here */
# Line 2671  for (;;) Line 3008  for (;;)
3008          {          {
3009          pp = eptr;          pp = eptr;
3010    
3011  #ifdef SUPPORT_UTF8  #ifdef SUPPORT_UTF
3012          /* UTF-8 mode */          if (utf)
         if (utf8)  
3013            {            {
3014            for (i = min; i < max; i++)            for (i = min; i < max; i++)
3015              {              {
# Line 2689  for (;;) Line 3025  for (;;)
3025                if (op == OP_CLASS) break;                if (op == OP_CLASS) break;
3026                }                }
3027              else              else
3028                {                if ((BYTE_MAP[c/8] & (1 << (c&7))) == 0) break;
               if ((data[c/8] & (1 << (c&7))) == 0) break;  
               }  
3029              eptr += len;              eptr += len;
3030              }              }
3031    
3032              if (possessive) continue;    /* No backtracking */
3033    
3034            for (;;)            for (;;)
3035              {              {
3036              RMATCH(eptr, ecode, offset_top, md, eptrb, RM18);              RMATCH(eptr, ecode, offset_top, md, eptrb, RM18);
# Line 2704  for (;;) Line 3041  for (;;)
3041            }            }
3042          else          else
3043  #endif  #endif
3044            /* Not UTF-8 mode */            /* Not UTF mode */
3045            {            {
3046            for (i = min; i < max; i++)            for (i = min; i < max; i++)
3047              {              {
# Line 2714  for (;;) Line 3051  for (;;)
3051                break;                break;
3052                }                }
3053              c = *eptr;              c = *eptr;
3054              if ((data[c/8] & (1 << (c&7))) == 0) break;  #ifndef COMPILE_PCRE8
3055                if (c > 255)
3056                  {
3057                  if (op == OP_CLASS) break;
3058                  }
3059                else
3060    #endif
3061                  if ((BYTE_MAP[c/8] & (1 << (c&7))) == 0) break;
3062              eptr++;              eptr++;
3063              }              }
3064    
3065              if (possessive) continue;    /* No backtracking */
3066    
3067            while (eptr >= pp)            while (eptr >= pp)
3068              {              {
3069              RMATCH(eptr, ecode, offset_top, md, eptrb, RM19);              RMATCH(eptr, ecode, offset_top, md, eptrb, RM19);
# Line 2725  for (;;) Line 3072  for (;;)
3072              }              }
3073            }            }
3074    
3075          MRRETURN(MATCH_NOMATCH);          RRETURN(MATCH_NOMATCH);
3076          }          }
3077    #undef BYTE_MAP
3078        }        }
3079      /* Control never gets here */      /* Control never gets here */
3080    
3081    
3082      /* Match an extended character class. This opcode is encountered only      /* Match an extended character class. In the 8-bit library, this opcode is
3083      when UTF-8 mode mode is supported. Nevertheless, we may not be in UTF-8      encountered only when UTF-8 mode mode is supported. In the 16-bit and
3084      mode, because Unicode properties are supported in non-UTF-8 mode. */      32-bit libraries, codepoints greater than 255 may be encountered even when
3085        UTF is not supported. */
3086    
3087  #ifdef SUPPORT_UTF8  #if defined SUPPORT_UTF || !defined COMPILE_PCRE8
3088      case OP_XCLASS:      case OP_XCLASS:
3089        {        {
3090        data = ecode + 1 + LINK_SIZE;                /* Save for matching */        data = ecode + 1 + LINK_SIZE;                /* Save for matching */
# Line 2749  for (;;) Line 3098  for (;;)
3098          case OP_CRMINPLUS:          case OP_CRMINPLUS:
3099          case OP_CRQUERY:          case OP_CRQUERY:
3100          case OP_CRMINQUERY:          case OP_CRMINQUERY:
3101            case OP_CRPOSSTAR:
3102            case OP_CRPOSPLUS:
3103            case OP_CRPOSQUERY:
3104          c = *ecode++ - OP_CRSTAR;          c = *ecode++ - OP_CRSTAR;
3105          minimize = (c & 1) != 0;          if (c < OP_CRPOSSTAR - OP_CRSTAR) minimize = (c & 1) != 0;
3106            else possessive = TRUE;
3107          min = rep_min[c];                 /* Pick up values from tables; */          min = rep_min[c];                 /* Pick up values from tables; */
3108          max = rep_max[c];                 /* zero for max => infinity */          max = rep_max[c];                 /* zero for max => infinity */
3109          if (max == 0) max = INT_MAX;          if (max == 0) max = INT_MAX;
# Line 2758  for (;;) Line 3111  for (;;)
3111    
3112          case OP_CRRANGE:          case OP_CRRANGE:
3113          case OP_CRMINRANGE:          case OP_CRMINRANGE:
3114            case OP_CRPOSRANGE:
3115          minimize = (*ecode == OP_CRMINRANGE);          minimize = (*ecode == OP_CRMINRANGE);
3116            possessive = (*ecode == OP_CRPOSRANGE);
3117          min = GET2(ecode, 1);          min = GET2(ecode, 1);
3118          max = GET2(ecode, 3);          max = GET2(ecode, 1 + IMM2_SIZE);
3119          if (max == 0) max = INT_MAX;          if (max == 0) max = INT_MAX;
3120          ecode += 5;          ecode += 1 + 2 * IMM2_SIZE;
3121          break;          break;
3122    
3123          default:               /* No repeat follows */          default:               /* No repeat follows */
# Line 2777  for (;;) Line 3132  for (;;)
3132          if (eptr >= md->end_subject)          if (eptr >= md->end_subject)
3133            {            {
3134            SCHECK_PARTIAL();            SCHECK_PARTIAL();
3135            MRRETURN(MATCH_NOMATCH);            RRETURN(MATCH_NOMATCH);
3136            }            }
3137          GETCHARINCTEST(c, eptr);          GETCHARINCTEST(c, eptr);
3138          if (!_pcre_xclass(c, data)) MRRETURN(MATCH_NOMATCH);          if (!PRIV(xclass)(c, data, utf)) RRETURN(MATCH_NOMATCH);
3139          }          }
3140    
3141        /* If max == min we can continue with the main loop without the        /* If max == min we can continue with the main loop without the
# Line 2797  for (;;) Line 3152  for (;;)
3152            {            {
3153            RMATCH(eptr, ecode, offset_top, md, eptrb, RM20);            RMATCH(eptr, ecode, offset_top, md, eptrb, RM20);
3154            if (rrc != MATCH_NOMATCH) RRETURN(rrc);            if (rrc != MATCH_NOMATCH) RRETURN(rrc);
3155            if (fi >= max) MRRETURN(MATCH_NOMATCH);            if (fi >= max) RRETURN(MATCH_NOMATCH);
3156            if (eptr >= md->end_subject)            if (eptr >= md->end_subject)
3157              {              {
3158              SCHECK_PARTIAL();              SCHECK_PARTIAL();
3159              MRRETURN(MATCH_NOMATCH);              RRETURN(MATCH_NOMATCH);
3160              }              }
3161            GETCHARINCTEST(c, eptr);            GETCHARINCTEST(c, eptr);
3162            if (!_pcre_xclass(c, data)) MRRETURN(MATCH_NOMATCH);            if (!PRIV(xclass)(c, data, utf)) RRETURN(MATCH_NOMATCH);
3163            }            }
3164          /* Control never gets here */          /* Control never gets here */
3165          }          }
# Line 2822  for (;;) Line 3177  for (;;)
3177              SCHECK_PARTIAL();              SCHECK_PARTIAL();
3178              break;              break;
3179              }              }
3180    #ifdef SUPPORT_UTF
3181            GETCHARLENTEST(c, eptr, len);            GETCHARLENTEST(c, eptr, len);
3182            if (!_pcre_xclass(c, data)) break;  #else
3183              c = *eptr;
3184    #endif
3185              if (!PRIV(xclass)(c, data, utf)) break;
3186            eptr += len;            eptr += len;
3187            }            }
3188    
3189            if (possessive) continue;    /* No backtracking */
3190    
3191          for(;;)          for(;;)
3192            {            {
3193            RMATCH(eptr, ecode, offset_top, md, eptrb, RM21);            RMATCH(eptr, ecode, offset_top, md, eptrb, RM21);
3194            if (rrc != MATCH_NOMATCH) RRETURN(rrc);            if (rrc != MATCH_NOMATCH) RRETURN(rrc);
3195            if (eptr-- == pp) break;        /* Stop if tried at original pos */            if (eptr-- == pp) break;        /* Stop if tried at original pos */
3196            if (utf8) BACKCHAR(eptr);  #ifdef SUPPORT_UTF
3197              if (utf) BACKCHAR(eptr);
3198    #endif
3199            }            }
3200          MRRETURN(MATCH_NOMATCH);          RRETURN(MATCH_NOMATCH);
3201          }          }
3202    
3203        /* Control never gets here */        /* Control never gets here */
# Line 2843  for (;;) Line 3207  for (;;)
3207      /* Match a single character, casefully */      /* Match a single character, casefully */
3208    
3209      case OP_CHAR:      case OP_CHAR:
3210  #ifdef SUPPORT_UTF8  #ifdef SUPPORT_UTF
3211      if (utf8)      if (utf)
3212        {        {
3213        length = 1;        length = 1;
3214        ecode++;        ecode++;
# Line 2852  for (;;) Line 3216  for (;;)
3216        if (length > md->end_subject - eptr)        if (length > md->end_subject - eptr)
3217          {          {
3218          CHECK_PARTIAL();             /* Not SCHECK_PARTIAL() */          CHECK_PARTIAL();             /* Not SCHECK_PARTIAL() */
3219          MRRETURN(MATCH_NOMATCH);          RRETURN(MATCH_NOMATCH);
3220          }          }
3221        while (length-- > 0) if (*ecode++ != *eptr++) MRRETURN(MATCH_NOMATCH);        while (length-- > 0) if (*ecode++ != *eptr++) RRETURN(MATCH_NOMATCH);
3222        }        }
3223      else      else
3224  #endif  #endif
3225        /* Not UTF mode */
     /* Non-UTF-8 mode */  
3226        {        {
3227        if (md->end_subject - eptr < 1)        if (md->end_subject - eptr < 1)
3228          {          {
3229          SCHECK_PARTIAL();            /* This one can use SCHECK_PARTIAL() */          SCHECK_PARTIAL();            /* This one can use SCHECK_PARTIAL() */
3230          MRRETURN(MATCH_NOMATCH);          RRETURN(MATCH_NOMATCH);
3231          }          }
3232        if (ecode[1] != *eptr++) MRRETURN(MATCH_NOMATCH);        if (ecode[1] != *eptr++) RRETURN(MATCH_NOMATCH);
3233        ecode += 2;        ecode += 2;
3234        }        }
3235      break;      break;
3236    
3237      /* Match a single character, caselessly */      /* Match a single character, caselessly. If we are at the end of the
3238        subject, give up immediately. */
3239    
3240      case OP_CHARI:      case OP_CHARI:
3241  #ifdef SUPPORT_UTF8      if (eptr >= md->end_subject)
3242      if (utf8)        {
3243          SCHECK_PARTIAL();
3244          RRETURN(MATCH_NOMATCH);
3245          }
3246    
3247    #ifdef SUPPORT_UTF
3248        if (utf)
3249        {        {
3250        length = 1;        length = 1;
3251        ecode++;        ecode++;
3252        GETCHARLEN(fc, ecode, length);        GETCHARLEN(fc, ecode, length);
3253    
       if (length > md->end_subject - eptr)  
         {  
         CHECK_PARTIAL();             /* Not SCHECK_PARTIAL() */  
         MRRETURN(MATCH_NOMATCH);  
         }  
   
3254        /* If the pattern character's value is < 128, we have only one byte, and        /* If the pattern character's value is < 128, we have only one byte, and
3255        can use the fast lookup table. */        we know that its other case must also be one byte long, so we can use the
3256          fast lookup table. We know that there is at least one byte left in the
3257          subject. */
3258    
3259        if (fc < 128)        if (fc < 128)
3260          {          {
3261          if (md->lcc[*ecode++] != md->lcc[*eptr++]) MRRETURN(MATCH_NOMATCH);          pcre_uint32 cc = *eptr;
3262            if (md->lcc[fc] != TABLE_GET(cc, md->lcc, cc)) RRETURN(MATCH_NOMATCH);
3263            ecode++;
3264            eptr++;
3265          }          }
3266    
3267        /* Otherwise we must pick up the subject character */        /* Otherwise we must pick up the subject character. Note that we cannot
3268          use the value of "length" to check for sufficient bytes left, because the
3269          other case of the character may have more or fewer bytes.  */
3270    
3271        else        else
3272          {          {
3273          unsigned int dc;          pcre_uint32 dc;
3274          GETCHARINC(dc, eptr);          GETCHARINC(dc, eptr);
3275          ecode += length;          ecode += length;
3276    
# Line 2911  for (;;) Line 3282  for (;;)
3282  #ifdef SUPPORT_UCP  #ifdef SUPPORT_UCP
3283            if (dc != UCD_OTHERCASE(fc))            if (dc != UCD_OTHERCASE(fc))
3284  #endif  #endif
3285              MRRETURN(MATCH_NOMATCH);              RRETURN(MATCH_NOMATCH);
3286            }            }
3287          }          }
3288        }        }
3289      else      else
3290  #endif   /* SUPPORT_UTF8 */  #endif   /* SUPPORT_UTF */
3291    
3292      /* Non-UTF-8 mode */      /* Not UTF mode */
3293        {        {
3294        if (md->end_subject - eptr < 1)        if (TABLE_GET(ecode[1], md->lcc, ecode[1])
3295          {            != TABLE_GET(*eptr, md->lcc, *eptr)) RRETURN(MATCH_NOMATCH);
3296          SCHECK_PARTIAL();            /* This one can use SCHECK_PARTIAL() */        eptr++;
         MRRETURN(MATCH_NOMATCH);  
         }  
       if (md->lcc[ecode[1]] != md->lcc[*eptr++]) MRRETURN(MATCH_NOMATCH);  
3297        ecode += 2;        ecode += 2;
3298        }        }
3299      break;      break;
# Line 2935  for (;;) Line 3303  for (;;)
3303      case OP_EXACT:      case OP_EXACT:
3304      case OP_EXACTI:      case OP_EXACTI:
3305      min = max = GET2(ecode, 1);      min = max = GET2(ecode, 1);
3306      ecode += 3;      ecode += 1 + IMM2_SIZE;
3307      goto REPEATCHAR;      goto REPEATCHAR;
3308    
3309      case OP_POSUPTO:      case OP_POSUPTO:
# Line 2950  for (;;) Line 3318  for (;;)
3318      min = 0;      min = 0;
3319      max = GET2(ecode, 1);      max = GET2(ecode, 1);
3320      minimize = *ecode == OP_MINUPTO || *ecode == OP_MINUPTOI;      minimize = *ecode == OP_MINUPTO || *ecode == OP_MINUPTOI;
3321      ecode += 3;      ecode += 1 + IMM2_SIZE;
3322      goto REPEATCHAR;      goto REPEATCHAR;
3323    
3324      case OP_POSSTAR:      case OP_POSSTAR:
# Line 2995  for (;;) Line 3363  for (;;)
3363      max = rep_max[c];                 /* zero for max => infinity */      max = rep_max[c];                 /* zero for max => infinity */
3364      if (max == 0) max = INT_MAX;      if (max == 0) max = INT_MAX;
3365    
3366      /* Common code for all repeated single-character matches. */      /* Common code for all repeated single-character matches. We first check
3367        for the minimum number of characters. If the minimum equals the maximum, we
3368        are done. Otherwise, if minimizing, check the rest of the pattern for a
3369        match; if there isn't one, advance up to the maximum, one character at a
3370        time.
3371    
3372        If maximizing, advance up to the maximum number of matching characters,
3373        until eptr is past the end of the maximum run. If possessive, we are
3374        then done (no backing up). Otherwise, match at this position; anything
3375        other than no match is immediately returned. For nomatch, back up one
3376        character, unless we are matching \R and the last thing matched was
3377        \r\n, in which case, back up two bytes. When we reach the first optional
3378        character position, we can save stack by doing a tail recurse.
3379    
3380        The various UTF/non-UTF and caseful/caseless cases are handled separately,
3381        for speed. */
3382    
3383      REPEATCHAR:      REPEATCHAR:
3384  #ifdef SUPPORT_UTF8  #ifdef SUPPORT_UTF
3385      if (utf8)      if (utf)
3386        {        {
3387        length = 1;        length = 1;
3388        charptr = ecode;        charptr = ecode;
# Line 3012  for (;;) Line 3395  for (;;)
3395        if (length > 1)        if (length > 1)
3396          {          {
3397  #ifdef SUPPORT_UCP  #ifdef SUPPORT_UCP
3398          unsigned int othercase;          pcre_uint32 othercase;
3399          if (op >= OP_STARI &&     /* Caseless */          if (op >= OP_STARI &&     /* Caseless */
3400              (othercase = UCD_OTHERCASE(fc)) != fc)              (othercase = UCD_OTHERCASE(fc)) != fc)
3401            oclength = _pcre_ord2utf8(othercase, occhars);            oclength = PRIV(ord2utf)(othercase, occhars);
3402          else oclength = 0;          else oclength = 0;
3403  #endif  /* SUPPORT_UCP */  #endif  /* SUPPORT_UCP */
3404    
3405          for (i = 1; i <= min; i++)          for (i = 1; i <= min; i++)
3406            {            {
3407            if (eptr <= md->end_subject - length &&            if (eptr <= md->end_subject - length &&
3408              memcmp(eptr, charptr, length) == 0) eptr += length;              memcmp(eptr, charptr, IN_UCHARS(length)) == 0) eptr += length;
3409  #ifdef SUPPORT_UCP  #ifdef SUPPORT_UCP
3410            else if (oclength > 0 &&            else if (oclength > 0 &&
3411                     eptr <= md->end_subject - oclength &&                     eptr <= md->end_subject - oclength &&
3412                     memcmp(eptr, occhars, oclength) == 0) eptr += oclength;                     memcmp(eptr, occhars, IN_UCHARS(oclength)) == 0) eptr += oclength;
3413  #endif  /* SUPPORT_UCP */  #endif  /* SUPPORT_UCP */
3414            else            else
3415              {              {
3416              CHECK_PARTIAL();              CHECK_PARTIAL();
3417              MRRETURN(MATCH_NOMATCH);              RRETURN(MATCH_NOMATCH);
3418              }              }
3419            }            }
3420    
# Line 3043  for (;;) Line 3426  for (;;)
3426              {              {
3427              RMATCH(eptr, ecode, offset_top, md, eptrb, RM22);              RMATCH(eptr, ecode, offset_top, md, eptrb, RM22);
3428              if (rrc != MATCH_NOMATCH) RRETURN(rrc);              if (rrc != MATCH_NOMATCH) RRETURN(rrc);
3429              if (fi >= max) MRRETURN(MATCH_NOMATCH);              if (fi >= max) RRETURN(MATCH_NOMATCH);
3430              if (eptr <= md->end_subject - length &&              if (eptr <= md->end_subject - length &&
3431                memcmp(eptr, charptr, length) == 0) eptr += length;                memcmp(eptr, charptr, IN_UCHARS(length)) == 0) eptr += length;
3432  #ifdef SUPPORT_UCP  #ifdef SUPPORT_UCP
3433              else if (oclength > 0 &&              else if (oclength > 0 &&
3434                       eptr <= md->end_subject - oclength &&                       eptr <= md->end_subject - oclength &&
3435                       memcmp(eptr, occhars, oclength) == 0) eptr += oclength;                       memcmp(eptr, occhars, IN_UCHARS(oclength)) == 0) eptr += oclength;
3436  #endif  /* SUPPORT_UCP */  #endif  /* SUPPORT_UCP */
3437              else              else
3438                {                {
3439                CHECK_PARTIAL();                CHECK_PARTIAL();
3440                MRRETURN(MATCH_NOMATCH);                RRETURN(MATCH_NOMATCH);
3441                }                }
3442              }              }
3443            /* Control never gets here */            /* Control never gets here */
# Line 3066  for (;;) Line 3449  for (;;)
3449            for (i = min; i < max; i++)            for (i = min; i < max; i++)
3450              {              {
3451              if (eptr <= md->end_subject - length &&              if (eptr <= md->end_subject - length &&
3452                  memcmp(eptr, charptr, length) == 0) eptr += length;                  memcmp(eptr, charptr, IN_UCHARS(length)) == 0) eptr += length;
3453  #ifdef SUPPORT_UCP  #ifdef SUPPORT_UCP
3454              else if (oclength > 0 &&              else if (oclength > 0 &&
3455                       eptr <= md->end_subject - oclength &&                       eptr <= md->end_subject - oclength &&
3456                       memcmp(eptr, occhars, oclength) == 0) eptr += oclength;                       memcmp(eptr, occhars, IN_UCHARS(oclength)) == 0) eptr += oclength;
3457  #endif  /* SUPPORT_UCP */  #endif  /* SUPPORT_UCP */
3458              else              else
3459                {                {
# Line 3079  for (;;) Line 3462  for (;;)
3462                }                }
3463              }              }
3464    
3465            if (possessive) continue;            if (possessive) continue;    /* No backtracking */
   
3466            for(;;)            for(;;)
3467              {              {
3468                if (eptr == pp) goto TAIL_RECURSE;
3469              RMATCH(eptr, ecode, offset_top, md, eptrb, RM23);              RMATCH(eptr, ecode, offset_top, md, eptrb, RM23);
3470              if (rrc != MATCH_NOMATCH) RRETURN(rrc);              if (rrc != MATCH_NOMATCH) RRETURN(rrc);
             if (eptr == pp) { MRRETURN(MATCH_NOMATCH); }  
3471  #ifdef SUPPORT_UCP  #ifdef SUPPORT_UCP
3472              eptr--;              eptr--;
3473              BACKCHAR(eptr);              BACKCHAR(eptr);
# Line 3102  for (;;) Line 3484  for (;;)
3484        value of fc will always be < 128. */        value of fc will always be < 128. */
3485        }        }
3486      else      else
3487  #endif  /* SUPPORT_UTF8 */  #endif  /* SUPPORT_UTF */
3488          /* When not in UTF-8 mode, load a single-byte character. */
3489          fc = *ecode++;
3490    
3491      /* When not in UTF-8 mode, load a single-byte character. */      /* The value of fc at this point is always one character, though we may
3492        or may not be in UTF mode. The code is duplicated for the caseless and
     fc = *ecode++;  
   
     /* The value of fc at this point is always less than 256, though we may or  
     may not be in UTF-8 mode. The code is duplicated for the caseless and  
3493      caseful cases, for speed, since matching characters is likely to be quite      caseful cases, for speed, since matching characters is likely to be quite
3494      common. First, ensure the minimum number of matches are present. If min =      common. First, ensure the minimum number of matches are present. If min =
3495      max, continue at the same level without recursing. Otherwise, if      max, continue at the same level without recursing. Otherwise, if
# Line 3118  for (;;) Line 3498  for (;;)
3498      maximizing, find the maximum number of characters and work backwards. */      maximizing, find the maximum number of characters and work backwards. */
3499    
3500      DPRINTF(("matching %c{%d,%d} against subject %.*s\n", fc, min, max,      DPRINTF(("matching %c{%d,%d} against subject %.*s\n", fc, min, max,
3501        max, eptr));        max, (char *)eptr));
3502    
3503      if (op >= OP_STARI)  /* Caseless */      if (op >= OP_STARI)  /* Caseless */
3504        {        {
3505        fc = md->lcc[fc];  #ifdef COMPILE_PCRE8
3506          /* fc must be < 128 if UTF is enabled. */
3507          foc = md->fcc[fc];
3508    #else
3509    #ifdef SUPPORT_UTF
3510    #ifdef SUPPORT_UCP
3511          if (utf && fc > 127)
3512            foc = UCD_OTHERCASE(fc);
3513    #else
3514          if (utf && fc > 127)
3515            foc = fc;
3516    #endif /* SUPPORT_UCP */
3517          else
3518    #endif /* SUPPORT_UTF */
3519            foc = TABLE_GET(fc, md->fcc, fc);
3520    #endif /* COMPILE_PCRE8 */
3521    
3522        for (i = 1; i <= min; i++)        for (i = 1; i <= min; i++)
3523          {          {
3524            pcre_uint32 cc;                 /* Faster than pcre_uchar */
3525          if (eptr >= md->end_subject)          if (eptr >= md->end_subject)
3526            {            {
3527            SCHECK_PARTIAL();            SCHECK_PARTIAL();
3528            MRRETURN(MATCH_NOMATCH);            RRETURN(MATCH_NOMATCH);
3529            }            }
3530          if (fc != md->lcc[*eptr++]) MRRETURN(MATCH_NOMATCH);          cc = *eptr;
3531            if (fc != cc && foc != cc) RRETURN(MATCH_NOMATCH);
3532            eptr++;
3533          }          }
3534        if (min == max) continue;        if (min == max) continue;
3535        if (minimize)        if (minimize)
3536          {          {
3537          for (fi = min;; fi++)          for (fi = min;; fi++)
3538            {            {
3539              pcre_uint32 cc;               /* Faster than pcre_uchar */
3540            RMATCH(eptr, ecode, offset_top, md, eptrb, RM24);            RMATCH(eptr, ecode, offset_top, md, eptrb, RM24);
3541            if (rrc != MATCH_NOMATCH) RRETURN(rrc);            if (rrc != MATCH_NOMATCH) RRETURN(rrc);
3542            if (fi >= max) MRRETURN(MATCH_NOMATCH);            if (fi >= max) RRETURN(MATCH_NOMATCH);
3543            if (eptr >= md->end_subject)            if (eptr >= md->end_subject)
3544              {              {
3545              SCHECK_PARTIAL();              SCHECK_PARTIAL();
3546              MRRETURN(MATCH_NOMATCH);              RRETURN(MATCH_NOMATCH);
3547              }              }
3548            if (fc != md->lcc[*eptr++]) MRRETURN(MATCH_NOMATCH);            cc = *eptr;
3549              if (fc != cc && foc != cc) RRETURN(MATCH_NOMATCH);
3550              eptr++;
3551            }            }
3552          /* Control never gets here */          /* Control never gets here */
3553          }          }
# Line 3154  for (;;) Line 3556  for (;;)
3556          pp = eptr;          pp = eptr;
3557          for (i = min; i < max; i++)          for (i = min; i < max; i++)
3558            {            {
3559              pcre_uint32 cc;               /* Faster than pcre_uchar */
3560            if (eptr >= md->end_subject)            if (eptr >= md->end_subject)
3561              {              {
3562              SCHECK_PARTIAL();              SCHECK_PARTIAL();
3563              break;              break;
3564              }              }
3565            if (fc != md->lcc[*eptr]) break;            cc = *eptr;
3566              if (fc != cc && foc != cc) break;
3567            eptr++;            eptr++;
3568            }            }
3569            if (possessive) continue;       /* No backtracking */
3570          if (possessive) continue;          for (;;)
   
         while (eptr >= pp)  
3571            {            {
3572              if (eptr == pp) goto TAIL_RECURSE;
3573            RMATCH(eptr, ecode, offset_top, md, eptrb, RM25);            RMATCH(eptr, ecode, offset_top, md, eptrb, RM25);
3574            eptr--;            eptr--;
3575            if (rrc != MATCH_NOMATCH) RRETURN(rrc);            if (rrc != MATCH_NOMATCH) RRETURN(rrc);
3576            }            }
3577          MRRETURN(MATCH_NOMATCH);          /* Control never gets here */
3578          }          }
       /* Control never gets here */  
3579        }        }
3580    
3581      /* Caseful comparisons (includes all multi-byte characters) */      /* Caseful comparisons (includes all multi-byte characters) */
# Line 3185  for (;;) Line 3587  for (;;)
3587          if (eptr >= md->end_subject)          if (eptr >= md->end_subject)
3588            {            {
3589            SCHECK_PARTIAL();            SCHECK_PARTIAL();
3590            MRRETURN(MATCH_NOMATCH);            RRETURN(MATCH_NOMATCH);
3591            }            }
3592          if (fc != *eptr++) MRRETURN(MATCH_NOMATCH);          if (fc != *eptr++) RRETURN(MATCH_NOMATCH);
3593          }          }
3594    
3595        if (min == max) continue;        if (min == max) continue;
# Line 3198  for (;;) Line 3600  for (;;)
3600            {            {
3601            RMATCH(eptr, ecode, offset_top, md, eptrb, RM26);            RMATCH(eptr, ecode, offset_top, md, eptrb, RM26);
3602            if (rrc != MATCH_NOMATCH) RRETURN(rrc);            if (rrc != MATCH_NOMATCH) RRETURN(rrc);
3603            if (fi >= max) MRRETURN(MATCH_NOMATCH);            if (fi >= max) RRETURN(MATCH_NOMATCH);
3604            if (eptr >= md->end_subject)            if (eptr >= md->end_subject)
3605              {              {
3606              SCHECK_PARTIAL();              SCHECK_PARTIAL();
3607              MRRETURN(MATCH_NOMATCH);              RRETURN(MATCH_NOMATCH);
3608              }              }
3609            if (fc != *eptr++) MRRETURN(MATCH_NOMATCH);            if (fc != *eptr++) RRETURN(MATCH_NOMATCH);
3610            }            }
3611          /* Control never gets here */          /* Control never gets here */
3612          }          }
# Line 3221  for (;;) Line 3623  for (;;)
3623            if (fc != *eptr) break;            if (fc != *eptr) break;
3624            eptr++;            eptr++;
3625            }            }
3626          if (possessive) continue;          if (possessive) continue;    /* No backtracking */
3627            for (;;)
         while (eptr >= pp)  
3628            {            {
3629              if (eptr == pp) goto TAIL_RECURSE;
3630            RMATCH(eptr, ecode, offset_top, md, eptrb, RM27);            RMATCH(eptr, ecode, offset_top, md, eptrb, RM27);
3631            eptr--;            eptr--;
3632            if (rrc != MATCH_NOMATCH) RRETURN(rrc);            if (rrc != MATCH_NOMATCH) RRETURN(rrc);
3633            }            }
3634          MRRETURN(MATCH_NOMATCH);          /* Control never gets here */
3635          }          }
3636        }        }
3637      /* Control never gets here */      /* Control never gets here */
# Line 3242  for (;;) Line 3644  for (;;)
3644      if (eptr >= md->end_subject)      if (eptr >= md->end_subject)
3645        {        {
3646        SCHECK_PARTIAL();        SCHECK_PARTIAL();
3647        MRRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
3648        }        }
3649      ecode++;  #ifdef SUPPORT_UTF
3650      GETCHARINCTEST(c, eptr);      if (utf)
     if (op == OP_NOTI)         /* The caseless case */  
3651        {        {
3652  #ifdef SUPPORT_UTF8        register pcre_uint32 ch, och;
3653        if (c < 256)  
3654  #endif        ecode++;
3655        c = md->lcc[c];        GETCHARINC(ch, ecode);
3656        if (md->lcc[*ecode++] == c) MRRETURN(MATCH_NOMATCH);        GETCHARINC(c, eptr);
3657    
3658          if (op == OP_NOT)
3659            {
3660            if (ch == c) RRETURN(MATCH_NOMATCH);
3661            }
3662          else
3663            {
3664    #ifdef SUPPORT_UCP
3665            if (ch > 127)
3666              och = UCD_OTHERCASE(ch);
3667    #else
3668            if (ch > 127)
3669              och = ch;
3670    #endif /* SUPPORT_UCP */
3671            else
3672              och = TABLE_GET(ch, md->fcc, ch);
3673            if (ch == c || och == c) RRETURN(MATCH_NOMATCH);
3674            }
3675        }        }
3676      else    /* Caseful */      else
3677    #endif
3678        {        {
3679        if (*ecode++ == c) MRRETURN(MATCH_NOMATCH);        register pcre_uint32 ch = ecode[1];
3680          c = *eptr++;
3681          if (ch == c || (op == OP_NOTI && TABLE_GET(ch, md->fcc, ch) == c))
3682            RRETURN(MATCH_NOMATCH);
3683          ecode += 2;
3684        }        }
3685      break;      break;
3686    
# Line 3270  for (;;) Line 3694  for (;;)
3694      case OP_NOTEXACT:      case OP_NOTEXACT:
3695      case OP_NOTEXACTI:      case OP_NOTEXACTI:
3696      min = max = GET2(ecode, 1);      min = max = GET2(ecode, 1);
3697      ecode += 3;      ecode += 1 + IMM2_SIZE;
3698      goto REPEATNOTCHAR;      goto REPEATNOTCHAR;
3699    
3700      case OP_NOTUPTO:      case OP_NOTUPTO:
# Line 3280  for (;;) Line 3704  for (;;)
3704      min = 0;      min = 0;
3705      max = GET2(ecode, 1);      max = GET2(ecode, 1);
3706      minimize = *ecode == OP_NOTMINUPTO || *ecode == OP_NOTMINUPTOI;      minimize = *ecode == OP_NOTMINUPTO || *ecode == OP_NOTMINUPTOI;
3707      ecode += 3;      ecode += 1 + IMM2_SIZE;
3708      goto REPEATNOTCHAR;      goto REPEATNOTCHAR;
3709    
3710      case OP_NOTPOSSTAR:      case OP_NOTPOSSTAR:
# Line 3312  for (;;) Line 3736  for (;;)
3736      possessive = TRUE;      possessive = TRUE;
3737      min = 0;      min = 0;
3738      max = GET2(ecode, 1);      max = GET2(ecode, 1);
3739      ecode += 3;      ecode += 1 + IMM2_SIZE;
3740      goto REPEATNOTCHAR;      goto REPEATNOTCHAR;
3741    
3742      case OP_NOTSTAR:      case OP_NOTSTAR:
# Line 3336  for (;;) Line 3760  for (;;)
3760      /* Common code for all repeated single-byte matches. */      /* Common code for all repeated single-byte matches. */
3761    
3762      REPEATNOTCHAR:      REPEATNOTCHAR:
3763      fc = *ecode++;      GETCHARINCTEST(fc, ecode);
3764    
3765      /* The code is duplicated for the caseless and caseful cases, for speed,      /* The code is duplicated for the caseless and caseful cases, for speed,
3766      since matching characters is likely to be quite common. First, ensure the      since matching characters is likely to be quite common. First, ensure the
# Line 3347  for (;;) Line 3771  for (;;)
3771      characters and work backwards. */      characters and work backwards. */
3772    
3773      DPRINTF(("negative matching %c{%d,%d} against subject %.*s\n", fc, min, max,      DPRINTF(("negative matching %c{%d,%d} against subject %.*s\n", fc, min, max,
3774        max, eptr));        max, (char *)eptr));
3775    
3776      if (op >= OP_NOTSTARI)     /* Caseless */      if (op >= OP_NOTSTARI)     /* Caseless */
3777        {        {
3778        fc = md->lcc[fc];  #ifdef SUPPORT_UTF
3779    #ifdef SUPPORT_UCP
3780          if (utf && fc > 127)
3781            foc = UCD_OTHERCASE(fc);
3782    #else
3783          if (utf && fc > 127)
3784            foc = fc;
3785    #endif /* SUPPORT_UCP */
3786          else
3787    #endif /* SUPPORT_UTF */
3788            foc = TABLE_GET(fc, md->fcc, fc);
3789    
3790  #ifdef SUPPORT_UTF8  #ifdef SUPPORT_UTF
3791        /* UTF-8 mode */        if (utf)
       if (utf8)  
3792          {          {
3793          register unsigned int d;          register pcre_uint32 d;
3794          for (i = 1; i <= min; i++)          for (i = 1; i <= min; i++)
3795            {            {
3796            if (eptr >= md->end_subject)            if (eptr >= md->end_subject)
3797              {              {
3798              SCHECK_PARTIAL();              SCHECK_PARTIAL();
3799              MRRETURN(MATCH_NOMATCH);              RRETURN(MATCH_NOMATCH);
3800              }              }
3801            GETCHARINC(d, eptr);            GETCHARINC(d, eptr);
3802            if (d < 256) d = md->lcc[d];            if (fc == d || (unsigned int)foc == d) RRETURN(MATCH_NOMATCH);
           if (fc == d) MRRETURN(MATCH_NOMATCH);  
3803            }            }
3804          }          }
3805        else        else
3806  #endif  #endif  /* SUPPORT_UTF */
3807          /* Not UTF mode */
       /* Not UTF-8 mode */  
3808          {          {
3809          for (i = 1; i <= min; i++)          for (i = 1; i <= min; i++)
3810            {            {
3811            if (eptr >= md->end_subject)            if (eptr >= md->end_subject)
3812              {              {
3813              SCHECK_PARTIAL();              SCHECK_PARTIAL();
3814              MRRETURN(MATCH_NOMATCH);              RRETURN(MATCH_NOMATCH);
3815              }              }
3816            if (fc == md->lcc[*eptr++]) MRRETURN(MATCH_NOMATCH);            if (fc == *eptr || foc == *eptr) RRETURN(MATCH_NOMATCH);
3817              eptr++;
3818            }            }
3819          }          }
3820    
# Line 3390  for (;;) Line 3822  for (;;)
3822    
3823        if (minimize)        if (minimize)
3824          {          {
3825  #ifdef SUPPORT_UTF8  #ifdef SUPPORT_UTF
3826          /* UTF-8 mode */          if (utf)
         if (utf8)  
3827            {            {
3828            register unsigned int d;            register pcre_uint32 d;
3829            for (fi = min;; fi++)            for (fi = min;; fi++)
3830              {              {
3831              RMATCH(eptr, ecode, offset_top, md, eptrb, RM28);              RMATCH(eptr, ecode, offset_top, md, eptrb, RM28);
3832              if (rrc != MATCH_NOMATCH) RRETURN(rrc);              if (rrc != MATCH_NOMATCH) RRETURN(rrc);
3833              if (fi >= max) MRRETURN(MATCH_NOMATCH);              if (fi >= max) RRETURN(MATCH_NOMATCH);
3834              if (eptr >= md->end_subject)              if (eptr >= md->end_subject)
3835                {                {
3836                SCHECK_PARTIAL();                SCHECK_PARTIAL();
3837                MRRETURN(MATCH_NOMATCH);                RRETURN(MATCH_NOMATCH);
3838                }                }
3839              GETCHARINC(d, eptr);              GETCHARINC(d, eptr);
3840              if (d < 256) d = md->lcc[d];              if (fc == d || (unsigned int)foc == d) RRETURN(MATCH_NOMATCH);
             if (fc == d) MRRETURN(MATCH_NOMATCH);  
3841              }              }
3842            }            }
3843          else          else
3844  #endif  #endif  /*SUPPORT_UTF */
3845          /* Not UTF-8 mode */          /* Not UTF mode */
3846            {            {
3847            for (fi = min;; fi++)            for (fi = min;; fi++)
3848              {              {
3849              RMATCH(eptr, ecode, offset_top, md, eptrb, RM29);              RMATCH(eptr, ecode, offset_top, md, eptrb, RM29);
3850              if (rrc != MATCH_NOMATCH) RRETURN(rrc);              if (rrc != MATCH_NOMATCH) RRETURN(rrc);
3851              if (fi >= max) MRRETURN(MATCH_NOMATCH);              if (fi >= max) RRETURN(MATCH_NOMATCH);
3852              if (eptr >= md->end_subject)              if (eptr >= md->end_subject)
3853                {                {
3854                SCHECK_PARTIAL();                SCHECK_PARTIAL();
3855                MRRETURN(MATCH_NOMATCH);                RRETURN(MATCH_NOMATCH);
3856                }                }
3857              if (fc == md->lcc[*eptr++]) MRRETURN(MATCH_NOMATCH);              if (fc == *eptr || foc == *eptr) RRETURN(MATCH_NOMATCH);
3858                eptr++;
3859              }              }
3860            }            }
3861          /* Control never gets here */          /* Control never gets here */
# Line 3436  for (;;) Line 3867  for (;;)
3867          {          {
3868          pp = eptr;          pp = eptr;
3869    
3870  #ifdef SUPPORT_UTF8  #ifdef SUPPORT_UTF
3871          /* UTF-8 mode */          if (utf)
         if (utf8)  
3872            {            {
3873            register unsigned int d;            register pcre_uint32 d;
3874            for (i = min; i < max; i++)            for (i = min; i < max; i++)
3875              {              {
3876              int len = 1;              int len = 1;
# Line 3450  for (;;) Line 3880  for (;;)
3880                break;                break;
3881                }                }
3882              GETCHARLEN(d, eptr, len);              GETCHARLEN(d, eptr, len);
3883              if (d < 256) d = md->lcc[d];              if (fc == d || (unsigned int)foc == d) break;
             if (fc == d) break;  
3884              eptr += len;              eptr += len;
3885              }              }
3886          if (possessive) continue;            if (possessive) continue;    /* No backtracking */
3887          for(;;)            for(;;)
3888              {              {
3889                if (eptr == pp) goto TAIL_RECURSE;
3890              RMATCH(eptr, ecode, offset_top, md, eptrb, RM30);              RMATCH(eptr, ecode, offset_top, md, eptrb, RM30);
3891              if (rrc != MATCH_NOMATCH) RRETURN(rrc);              if (rrc != MATCH_NOMATCH) RRETURN(rrc);
3892              if (eptr-- == pp) break;        /* Stop if tried at original pos */              eptr--;
3893              BACKCHAR(eptr);              BACKCHAR(eptr);
3894              }              }
3895            }            }
3896          else          else
3897  #endif  #endif  /* SUPPORT_UTF */
3898          /* Not UTF-8 mode */          /* Not UTF mode */
3899            {            {
3900            for (i = min; i < max; i++)            for (i = min; i < max; i++)
3901              {              {
# Line 3474  for (;;) Line 3904  for (;;)
3904                SCHECK_PARTIAL();                SCHECK_PARTIAL();
3905                break;                break;
3906                }                }
3907              if (fc == md->lcc[*eptr]) break;              if (fc == *eptr || foc == *eptr) break;
3908              eptr++;              eptr++;
3909              }              }
3910            if (possessive) continue;            if (possessive) continue;    /* No backtracking */
3911            while (eptr >= pp)            for (;;)
3912              {              {
3913                if (eptr == pp) goto TAIL_RECURSE;
3914              RMATCH(eptr, ecode, offset_top, md, eptrb, RM31);              RMATCH(eptr, ecode, offset_top, md, eptrb, RM31);
3915              if (rrc != MATCH_NOMATCH) RRETURN(rrc);              if (rrc != MATCH_NOMATCH) RRETURN(rrc);
3916              eptr--;              eptr--;
3917              }              }
3918            }            }
3919            /* Control never gets here */
         MRRETURN(MATCH_NOMATCH);  
3920          }          }
       /* Control never gets here */  
3921        }        }
3922    
3923      /* Caseful comparisons */      /* Caseful comparisons */
3924    
3925      else      else
3926        {        {
3927  #ifdef SUPPORT_UTF8  #ifdef SUPPORT_UTF
3928        /* UTF-8 mode */        if (utf)
       if (utf8)  
3929          {          {
3930          register unsigned int d;          register pcre_uint32 d;
3931          for (i = 1; i <= min; i++)          for (i = 1; i <= min; i++)
3932            {            {
3933            if (eptr >= md->end_subject)            if (eptr >= md->end_subject)
3934              {              {
3935              SCHECK_PARTIAL();              SCHECK_PARTIAL();
3936              MRRETURN(MATCH_NOMATCH);              RRETURN(MATCH_NOMATCH);
3937              }              }
3938            GETCHARINC(d, eptr);            GETCHARINC(d, eptr);
3939            if (fc == d) MRRETURN(MATCH_NOMATCH);            if (fc == d) RRETURN(MATCH_NOMATCH);
3940            }            }
3941          }          }
3942        else        else
3943  #endif  #endif
3944        /* Not UTF-8 mode */        /* Not UTF mode */
3945          {          {
3946          for (i = 1; i <= min; i++)          for (i = 1; i <= min; i++)
3947            {            {
3948            if (eptr >= md->end_subject)            if (eptr >= md->end_subject)
3949              {              {
3950              SCHECK_PARTIAL();              SCHECK_PARTIAL();
3951              MRRETURN(MATCH_NOMATCH);              RRETURN(MATCH_NOMATCH);
3952              }              }
3953            if (fc == *eptr++) MRRETURN(MATCH_NOMATCH);            if (fc == *eptr++) RRETURN(MATCH_NOMATCH);
3954            }            }
3955          }          }
3956    
# Line 3530  for (;;) Line 3958  for (;;)
3958    
3959        if (minimize)        if (minimize)
3960          {          {
3961  #ifdef SUPPORT_UTF8  #ifdef SUPPORT_UTF
3962          /* UTF-8 mode */          if (utf)
         if (utf8)  
3963            {            {
3964            register unsigned int d;            register pcre_uint32 d;
3965            for (fi = min;; fi++)            for (fi = min;; fi++)
3966              {              {
3967              RMATCH(eptr, ecode, offset_top, md, eptrb, RM32);              RMATCH(eptr, ecode, offset_top, md, eptrb, RM32);
3968              if (rrc != MATCH_NOMATCH) RRETURN(rrc);              if (rrc != MATCH_NOMATCH) RRETURN(rrc);
3969              if (fi >= max) MRRETURN(MATCH_NOMATCH);              if (fi >= max) RRETURN(MATCH_NOMATCH);
3970              if (eptr >= md->end_subject)              if (eptr >= md->end_subject)
3971                {                {
3972                SCHECK_PARTIAL();                SCHECK_PARTIAL();
3973                MRRETURN(MATCH_NOMATCH);                RRETURN(MATCH_NOMATCH);
3974                }                }
3975              GETCHARINC(d, eptr);              GETCHARINC(d, eptr);
3976              if (fc == d) MRRETURN(MATCH_NOMATCH);              if (fc == d) RRETURN(MATCH_NOMATCH);
3977              }              }
3978            }            }
3979          else          else
3980  #endif  #endif
3981          /* Not UTF-8 mode */          /* Not UTF mode */
3982            {            {
3983            for (fi = min;; fi++)            for (fi = min;; fi++)
3984              {              {
3985              RMATCH(eptr, ecode, offset_top, md, eptrb, RM33);              RMATCH(eptr, ecode, offset_top, md, eptrb, RM33);
3986              if (rrc != MATCH_NOMATCH) RRETURN(rrc);              if (rrc != MATCH_NOMATCH) RRETURN(rrc);
3987              if (fi >= max) MRRETURN(MATCH_NOMATCH);              if (fi >= max) RRETURN(MATCH_NOMATCH);
3988              if (eptr >= md->end_subject)              if (eptr >= md->end_subject)
3989                {                {
3990                SCHECK_PARTIAL();                SCHECK_PARTIAL();
3991                MRRETURN(MATCH_NOMATCH);                RRETURN(MATCH_NOMATCH);
3992                }                }
3993              if (fc == *eptr++) MRRETURN(MATCH_NOMATCH);              if (fc == *eptr++) RRETURN(MATCH_NOMATCH);
3994              }              }
3995            }            }
3996          /* Control never gets here */          /* Control never gets here */
# Line 3575  for (;;) Line 4002  for (;;)
4002          {          {
4003          pp = eptr;          pp = eptr;
4004    
4005  #ifdef SUPPORT_UTF8  #ifdef SUPPORT_UTF
4006          /* UTF-8 mode */          if (utf)
         if (utf8)  
4007            {            {
4008            register unsigned int d;            register pcre_uint32 d;
4009            for (i = min; i < max; i++)            for (i = min; i < max; i++)
4010              {              {
4011              int len = 1;              int len = 1;
# Line 3592  for (;;) Line 4018  for (;;)
4018              if (fc == d) break;              if (fc == d) break;
4019              eptr += len;              eptr += len;
4020              }              }
4021            if (possessive) continue;            if (possessive) continue;    /* No backtracking */
4022            for(;;)            for(;;)
4023              {              {
4024                if (eptr == pp) goto TAIL_RECURSE;
4025              RMATCH(eptr, ecode, offset_top, md, eptrb, RM34);              RMATCH(eptr, ecode, offset_top, md, eptrb, RM34);
4026              if (rrc != MATCH_NOMATCH) RRETURN(rrc);              if (rrc != MATCH_NOMATCH) RRETURN(rrc);
4027              if (eptr-- == pp) break;        /* Stop if tried at original pos */              eptr--;
4028              BACKCHAR(eptr);              BACKCHAR(eptr);
4029              }              }
4030            }            }
4031          else          else
4032  #endif  #endif
4033          /* Not UTF-8 mode */          /* Not UTF mode */
4034            {            {
4035            for (i = min; i < max; i++)            for (i = min; i < max; i++)
4036              {              {
# Line 3615  for (;;) Line 4042  for (;;)
4042              if (fc == *eptr) break;              if (fc == *eptr) break;
4043              eptr++;              eptr++;
4044              }              }
4045            if (possessive) continue;            if (possessive) continue;    /* No backtracking */
4046            while (eptr >= pp)            for (;;)
4047              {              {
4048                if (eptr == pp) goto TAIL_RECURSE;
4049              RMATCH(eptr, ecode, offset_top, md, eptrb, RM35);              RMATCH(eptr, ecode, offset_top, md, eptrb, RM35);
4050              if (rrc != MATCH_NOMATCH) RRETURN(rrc);              if (rrc != MATCH_NOMATCH) RRETURN(rrc);
4051              eptr--;              eptr--;
4052              }              }
4053            }            }
4054            /* Control never gets here */
         MRRETURN(MATCH_NOMATCH);  
4055          }          }
4056        }        }
4057      /* Control never gets here */      /* Control never gets here */
# Line 3636  for (;;) Line 4063  for (;;)
4063      case OP_TYPEEXACT:      case OP_TYPEEXACT:
4064      min = max = GET2(ecode, 1);      min = max = GET2(ecode, 1);
4065      minimize = TRUE;      minimize = TRUE;
4066      ecode += 3;      ecode += 1 + IMM2_SIZE;
4067      goto REPEATTYPE;      goto REPEATTYPE;
4068    
4069      case OP_TYPEUPTO:      case OP_TYPEUPTO:
# Line 3644  for (;;) Line 4071  for (;;)
4071      min = 0;      min = 0;
4072      max = GET2(ecode, 1);      max = GET2(ecode, 1);
4073      minimize = *ecode == OP_TYPEMINUPTO;      minimize = *ecode == OP_TYPEMINUPTO;
4074      ecode += 3;      ecode += 1 + IMM2_SIZE;
4075      goto REPEATTYPE;      goto REPEATTYPE;
4076    
4077      case OP_TYPEPOSSTAR:      case OP_TYPEPOSSTAR:
# Line 3672  for (;;) Line 4099  for (;;)
4099      possessive = TRUE;      possessive = TRUE;
4100      min = 0;      min = 0;
4101      max = GET2(ecode, 1);      max = GET2(ecode, 1);
4102      ecode += 3;      ecode += 1 + IMM2_SIZE;
4103      goto REPEATTYPE;      goto REPEATTYPE;
4104    
4105      case OP_TYPESTAR:      case OP_TYPESTAR:
# Line 3718  for (;;) Line 4145  for (;;)
4145          switch(prop_type)          switch(prop_type)
4146            {            {
4147            case PT_ANY:            case PT_ANY:
4148            if (prop_fail_result) MRRETURN(MATCH_NOMATCH);            if (prop_fail_result) RRETURN(MATCH_NOMATCH);
4149            for (i = 1; i <= min; i++)            for (i = 1; i <= min; i++)
4150              {              {
4151              if (eptr >= md->end_subject)              if (eptr >= md->end_subject)
4152                {                {
4153                SCHECK_PARTIAL();                SCHECK_PARTIAL();
4154                MRRETURN(MATCH_NOMATCH);                RRETURN(MATCH_NOMATCH);
4155                }                }
4156              GETCHARINCTEST(c, eptr);              GETCHARINCTEST(c, eptr);
4157              }              }
# Line 3737  for (;;) Line 4164  for (;;)
4164              if (eptr >= md->end_subject)              if (eptr >= md->end_subject)
4165                {                {
4166                SCHECK_PARTIAL();                SCHECK_PARTIAL();
4167                MRRETURN(MATCH_NOMATCH);                RRETURN(MATCH_NOMATCH);
4168                }                }
4169              GETCHARINCTEST(c, eptr);              GETCHARINCTEST(c, eptr);
4170              chartype = UCD_CHARTYPE(c);              chartype = UCD_CHARTYPE(c);
4171              if ((chartype == ucp_Lu ||              if ((chartype == ucp_Lu ||
4172                   chartype == ucp_Ll ||                   chartype == ucp_Ll ||
4173                   chartype == ucp_Lt) == prop_fail_result)                   chartype == ucp_Lt) == prop_fail_result)
4174                MRRETURN(MATCH_NOMATCH);                RRETURN(MATCH_NOMATCH);
4175              }              }
4176            break;            break;
4177    
# Line 3754  for (;;) Line 4181  for (;;)
4181              if (eptr >= md->end_subject)              if (eptr >= md->end_subject)
4182                {                {
4183                SCHECK_PARTIAL();                SCHECK_PARTIAL();
4184                MRRETURN(MATCH_NOMATCH);                RRETURN(MATCH_NOMATCH);
4185                }                }
4186              GETCHARINCTEST(c, eptr);              GETCHARINCTEST(c, eptr);
4187              if ((UCD_CATEGORY(c) == prop_value) == prop_fail_result)              if ((UCD_CATEGORY(c) == prop_value) == prop_fail_result)
4188                MRRETURN(MATCH_NOMATCH);                RRETURN(MATCH_NOMATCH);
4189              }              }
4190            break;            break;
4191    
# Line 3768  for (;;) Line 4195  for (;;)
4195              if (eptr >= md->end_subject)              if (eptr >= md->end_subject)
4196                {                {
4197                SCHECK_PARTIAL();                SCHECK_PARTIAL();
4198                MRRETURN(MATCH_NOMATCH);                RRETURN(MATCH_NOMATCH);
4199                }                }
4200              GETCHARINCTEST(c, eptr);              GETCHARINCTEST(c, eptr);
4201              if ((UCD_CHARTYPE(c) == prop_value) == prop_fail_result)              if ((UCD_CHARTYPE(c) == prop_value) == prop_fail_result)
4202                MRRETURN(MATCH_NOMATCH);                RRETURN(MATCH_NOMATCH);
4203              }              }
4204            break;            break;
4205    
# Line 3782  for (;;) Line 4209  for (;;)
4209              if (eptr >= md->end_subject)              if (eptr >= md->end_subject)
4210                {                {
4211                SCHECK_PARTIAL();                SCHECK_PARTIAL();
4212                MRRETURN(MATCH_NOMATCH);                RRETURN(MATCH_NOMATCH);
4213                }                }
4214              GETCHARINCTEST(c, eptr);              GETCHARINCTEST(c, eptr);
4215              if ((UCD_SCRIPT(c) == prop_value) == prop_fail_result)              if ((UCD_SCRIPT(c) == prop_value) == prop_fail_result)
4216                MRRETURN(MATCH_NOMATCH);                RRETURN(MATCH_NOMATCH);
4217              }              }
4218            break;            break;
4219    
# Line 3797  for (;;) Line 4224  for (;;)
4224              if (eptr >= md->end_subject)              if (eptr >= md->end_subject)
4225                {                {
4226                SCHECK_PARTIAL();                SCHECK_PARTIAL();
4227                MRRETURN(MATCH_NOMATCH);                RRETURN(MATCH_NOMATCH);
4228                }                }
4229              GETCHARINCTEST(c, eptr);              GETCHARINCTEST(c, eptr);
4230              category = UCD_CATEGORY(c);              category = UCD_CATEGORY(c);
4231              if ((category == ucp_L || category == ucp_N) == prop_fail_result)              if ((category == ucp_L || category == ucp_N) == prop_fail_result)
4232                MRRETURN(MATCH_NOMATCH);                RRETURN(MATCH_NOMATCH);
4233              }              }
4234            break;            break;
4235    
4236              /* Perl space used to exclude VT, but from Perl 5.18 it is included,
4237              which means that Perl space and POSIX space are now identical. PCRE
4238              was changed at release 8.34. */
4239    
4240            case PT_SPACE:    /* Perl space */            case PT_SPACE:    /* Perl space */
4241              case PT_PXSPACE:  /* POSIX space */
4242            for (i = 1; i <= min; i++)            for (i = 1; i <= min; i++)
4243              {              {
4244              if (eptr >= md->end_subject)              if (eptr >= md->end_subject)
4245                {                {
4246                SCHECK_PARTIAL();                SCHECK_PARTIAL();
4247                MRRETURN(MATCH_NOMATCH);                RRETURN(MATCH_NOMATCH);
4248                }                }
4249              GETCHARINCTEST(c, eptr);              GETCHARINCTEST(c, eptr);
4250              if ((UCD_CATEGORY(c) == ucp_Z || c == CHAR_HT || c == CHAR_NL ||              switch(c)
4251                   c == CHAR_FF || c == CHAR_CR)                {
4252                     == prop_fail_result)                HSPACE_CASES:
4253                MRRETURN(MATCH_NOMATCH);                VSPACE_CASES:
4254                  if (prop_fail_result) RRETURN(MATCH_NOMATCH);
4255                  break;
4256    
4257                  default:
4258                  if ((UCD_CATEGORY(c) == ucp_Z) == prop_fail_result)
4259                    RRETURN(MATCH_NOMATCH);
4260                  break;
4261                  }
4262              }              }
4263            break;            break;
4264    
4265            case PT_PXSPACE:  /* POSIX space */            case PT_WORD:
4266            for (i = 1; i <= min; i++)            for (i = 1; i <= min; i++)