/[pcre]/code/trunk/pcre_exec.c
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revision 614 by ph10, Sat Jul 9 10:48:16 2011 UTC revision 976 by ph10, Sat Jun 16 17:53:17 2012 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) 1997-2012 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  /* 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
60  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,
61  as stack usage is to be discouraged. */  as stack usage is to be discouraged. */
62    
63  #define MATCH_CONDASSERT     1  /* Called to check a condition assertion */  #define MATCH_CONDASSERT     1  /* Called to check a condition assertion */
# Line 76  negative to avoid the external error cod Line 75  negative to avoid the external error cod
75  #define MATCH_ACCEPT       (-999)  #define MATCH_ACCEPT       (-999)
76  #define MATCH_COMMIT       (-998)  #define MATCH_COMMIT       (-998)
77  #define MATCH_KETRPOS      (-997)  #define MATCH_KETRPOS      (-997)
78  #define MATCH_PRUNE        (-996)  #define MATCH_ONCE         (-996)
79  #define MATCH_SKIP         (-995)  #define MATCH_PRUNE        (-995)
80  #define MATCH_SKIP_ARG     (-994)  #define MATCH_SKIP         (-994)
81  #define MATCH_THEN         (-993)  #define MATCH_SKIP_ARG     (-993)
82    #define MATCH_THEN         (-992)
 /* This is a convenience macro for code that occurs many times. */  
   
 #define MRRETURN(ra) \  
   { \  
   md->mark = markptr; \  
   RRETURN(ra); \  
   }  
83    
84  /* 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.
85  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 120  Returns:     nothing Line 112  Returns:     nothing
112  */  */
113    
114  static void  static void
115  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)
116  {  {
117  unsigned int c;  unsigned int c;
118  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;
# Line 137  while (length-- > 0) Line 129  while (length-- > 0)
129    
130  /* Normally, if a back reference hasn't been set, the length that is passed is  /* Normally, if a back reference hasn't been set, the length that is passed is
131  negative, so the match always fails. However, in JavaScript compatibility mode,  negative, so the match always fails. However, in JavaScript compatibility mode,
132  the length passed is zero. Note that in caseless UTF-8 mode, the number of  the length passed is zero. Note that in caseless UTF-8 mode, the number of
133  subject bytes matched may be different to the number of reference bytes.  subject bytes matched may be different to the number of reference bytes.
134    
135  Arguments:  Arguments:
# Line 147  Arguments: Line 139  Arguments:
139    md          points to match data block    md          points to match data block
140    caseless    TRUE if caseless    caseless    TRUE if caseless
141    
142  Returns:      < 0 if not matched, otherwise the number of subject bytes matched  Returns:      >= 0 the number of subject bytes matched
143                  -1 no match
144                  -2 partial match; always given if at end subject
145  */  */
146    
147  static int  static int
148  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,
149    BOOL caseless)    BOOL caseless)
150  {  {
151  USPTR eptr_start = eptr;  PCRE_PUCHAR eptr_start = eptr;
152  register USPTR p = md->start_subject + md->offset_vector[offset];  register PCRE_PUCHAR p = md->start_subject + md->offset_vector[offset];
153    
154  #ifdef PCRE_DEBUG  #ifdef PCRE_DEBUG
155  if (eptr >= md->end_subject)  if (eptr >= md->end_subject)
# Line 170  pchars(p, length, FALSE, md); Line 164  pchars(p, length, FALSE, md);
164  printf("\n");  printf("\n");
165  #endif  #endif
166    
167  /* Always fail if reference not set (and not JavaScript compatible). */  /* Always fail if reference not set (and not JavaScript compatible - in that
168    case the length is passed as zero). */
169    
170  if (length < 0) return -1;  if (length < 0) return -1;
171    
# Line 180  ASCII characters. */ Line 175  ASCII characters. */
175    
176  if (caseless)  if (caseless)
177    {    {
178  #ifdef SUPPORT_UTF8  #ifdef SUPPORT_UTF
179  #ifdef SUPPORT_UCP  #ifdef SUPPORT_UCP
180    if (md->utf8)    if (md->utf)
181      {      {
182      /* 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
183      bytes matched may differ, because there are some characters whose upper and      bytes matched may differ, because there are some characters whose upper and
184      lower case versions code as different numbers of bytes. For example, U+023A      lower case versions code as different numbers of bytes. For example, U+023A
185      (2 bytes in UTF-8) is the upper case version of U+2C65 (3 bytes in UTF-8);      (2 bytes in UTF-8) is the upper case version of U+2C65 (3 bytes in UTF-8);
186      a sequence of 3 of the former uses 6 bytes, as does a sequence of two of      a sequence of 3 of the former uses 6 bytes, as does a sequence of two of
187      the latter. It is important, therefore, to check the length along the      the latter. It is important, therefore, to check the length along the
188      reference, not along the subject (earlier code did this wrong). */      reference, not along the subject (earlier code did this wrong). */
189    
190      USPTR endptr = p + length;      PCRE_PUCHAR endptr = p + length;
191      while (p < endptr)      while (p < endptr)
192        {        {
193        int c, d;        int c, d;
194        if (eptr >= md->end_subject) return -1;        if (eptr >= md->end_subject) return -2;   /* Partial match */
195        GETCHARINC(c, eptr);        GETCHARINC(c, eptr);
196        GETCHARINC(d, p);        GETCHARINC(d, p);
197        if (c != d && c != UCD_OTHERCASE(d)) return -1;        if (c != d && c != UCD_OTHERCASE(d)) return -1;
# Line 209  if (caseless) Line 204  if (caseless)
204    /* 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
205    is no UCP support. */    is no UCP support. */
206      {      {
     if (eptr + length > md->end_subject) return -1;  
207      while (length-- > 0)      while (length-- > 0)
208        { if (md->lcc[*p++] != md->lcc[*eptr++]) return -1; }        {
209      }        if (eptr >= md->end_subject) return -2;   /* Partial match */
210          if (TABLE_GET(*p, md->lcc, *p) != TABLE_GET(*eptr, md->lcc, *eptr)) return -1;
211          p++;
212          eptr++;
213          }
214        }
215    }    }
216    
217  /* In the caseful case, we can just compare the bytes, whether or not we  /* In the caseful case, we can just compare the bytes, whether or not we
218  are in UTF-8 mode. */  are in UTF-8 mode. */
219    
220  else  else
221    {    {
222    if (eptr + length > md->end_subject) return -1;    while (length-- > 0)
223    while (length-- > 0) if (*p++ != *eptr++) return -1;      {
224        if (eptr >= md->end_subject) return -2;   /* Partial match */
225        if (*p++ != *eptr++) return -1;
226        }
227    }    }
228    
229  return eptr - eptr_start;  return (int)(eptr - eptr_start);
230  }  }
231    
232    
# Line 276  enum { RM1=1, RM2,  RM3,  RM4,  RM5,  RM Line 278  enum { RM1=1, RM2,  RM3,  RM4,  RM5,  RM
278         RM31,  RM32, RM33, RM34, RM35, RM36, RM37, RM38, RM39, RM40,         RM31,  RM32, RM33, RM34, RM35, RM36, RM37, RM38, RM39, RM40,
279         RM41,  RM42, RM43, RM44, RM45, RM46, RM47, RM48, RM49, RM50,         RM41,  RM42, RM43, RM44, RM45, RM46, RM47, RM48, RM49, RM50,
280         RM51,  RM52, RM53, RM54, RM55, RM56, RM57, RM58, RM59, RM60,         RM51,  RM52, RM53, RM54, RM55, RM56, RM57, RM58, RM59, RM60,
281         RM61,  RM62, RM63};         RM61,  RM62, RM63, RM64, RM65, RM66 };
282    
283  /* 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
284  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 289  actually used in this definition. */ Line 291  actually used in this definition. */
291  #define RMATCH(ra,rb,rc,rd,re,rw) \  #define RMATCH(ra,rb,rc,rd,re,rw) \
292    { \    { \
293    printf("match() called in line %d\n", __LINE__); \    printf("match() called in line %d\n", __LINE__); \
294    rrc = match(ra,rb,mstart,markptr,rc,rd,re,rdepth+1); \    rrc = match(ra,rb,mstart,rc,rd,re,rdepth+1); \
295    printf("to line %d\n", __LINE__); \    printf("to line %d\n", __LINE__); \
296    }    }
297  #define RRETURN(ra) \  #define RRETURN(ra) \
# Line 299  actually used in this definition. */ Line 301  actually used in this definition. */
301    }    }
302  #else  #else
303  #define RMATCH(ra,rb,rc,rd,re,rw) \  #define RMATCH(ra,rb,rc,rd,re,rw) \
304    rrc = match(ra,rb,mstart,markptr,rc,rd,re,rdepth+1)    rrc = match(ra,rb,mstart,rc,rd,re,rdepth+1)
305  #define RRETURN(ra) return ra  #define RRETURN(ra) return ra
306  #endif  #endif
307    
# Line 314  argument of match(), which never changes Line 316  argument of match(), which never changes
316    
317  #define RMATCH(ra,rb,rc,rd,re,rw)\  #define RMATCH(ra,rb,rc,rd,re,rw)\
318    {\    {\
319    heapframe *newframe = (heapframe *)(pcre_stack_malloc)(sizeof(heapframe));\    heapframe *newframe = frame->Xnextframe;\
320    if (newframe == NULL) RRETURN(PCRE_ERROR_NOMEMORY);\    if (newframe == NULL)\
321    frame->Xwhere = rw; \      {\
322        newframe = (heapframe *)(PUBL(stack_malloc))(sizeof(heapframe));\
323        if (newframe == NULL) RRETURN(PCRE_ERROR_NOMEMORY);\
324        newframe->Xnextframe = NULL;\
325        frame->Xnextframe = newframe;\
326        }\
327      frame->Xwhere = rw;\
328    newframe->Xeptr = ra;\    newframe->Xeptr = ra;\
329    newframe->Xecode = rb;\    newframe->Xecode = rb;\
330    newframe->Xmstart = mstart;\    newframe->Xmstart = mstart;\
   newframe->Xmarkptr = markptr;\  
331    newframe->Xoffset_top = rc;\    newframe->Xoffset_top = rc;\
332    newframe->Xeptrb = re;\    newframe->Xeptrb = re;\
333    newframe->Xrdepth = frame->Xrdepth + 1;\    newframe->Xrdepth = frame->Xrdepth + 1;\
# Line 336  argument of match(), which never changes Line 343  argument of match(), which never changes
343    {\    {\
344    heapframe *oldframe = frame;\    heapframe *oldframe = frame;\
345    frame = oldframe->Xprevframe;\    frame = oldframe->Xprevframe;\
   (pcre_stack_free)(oldframe);\  
346    if (frame != NULL)\    if (frame != NULL)\
347      {\      {\
348      rrc = ra;\      rrc = ra;\
# Line 350  argument of match(), which never changes Line 356  argument of match(), which never changes
356    
357  typedef struct heapframe {  typedef struct heapframe {
358    struct heapframe *Xprevframe;    struct heapframe *Xprevframe;
359      struct heapframe *Xnextframe;
360    
361    /* Function arguments that may change */    /* Function arguments that may change */
362    
363    USPTR Xeptr;    PCRE_PUCHAR Xeptr;
364    const uschar *Xecode;    const pcre_uchar *Xecode;
365    USPTR Xmstart;    PCRE_PUCHAR Xmstart;
   USPTR Xmarkptr;  
366    int Xoffset_top;    int Xoffset_top;
367    eptrblock *Xeptrb;    eptrblock *Xeptrb;
368    unsigned int Xrdepth;    unsigned int Xrdepth;
369    
370    /* Function local variables */    /* Function local variables */
371    
372    USPTR Xcallpat;    PCRE_PUCHAR Xcallpat;
373  #ifdef SUPPORT_UTF8  #ifdef SUPPORT_UTF
374    USPTR Xcharptr;    PCRE_PUCHAR Xcharptr;
375  #endif  #endif
376    USPTR Xdata;    PCRE_PUCHAR Xdata;
377    USPTR Xnext;    PCRE_PUCHAR Xnext;
378    USPTR Xpp;    PCRE_PUCHAR Xpp;
379    USPTR Xprev;    PCRE_PUCHAR Xprev;
380    USPTR Xsaved_eptr;    PCRE_PUCHAR Xsaved_eptr;
381    
382    recursion_info Xnew_recursive;    recursion_info Xnew_recursive;
383    
# Line 383  typedef struct heapframe { Line 389  typedef struct heapframe {
389    int Xprop_type;    int Xprop_type;
390    int Xprop_value;    int Xprop_value;
391    int Xprop_fail_result;    int Xprop_fail_result;
   int Xprop_category;  
   int Xprop_chartype;  
   int Xprop_script;  
392    int Xoclength;    int Xoclength;
393    uschar Xocchars[8];    pcre_uchar Xocchars[6];
394  #endif  #endif
395    
396    int Xcodelink;    int Xcodelink;
# Line 429  returns a negative (error) response, the Line 432  returns a negative (error) response, the
432  same response. */  same response. */
433    
434  /* 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
435  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
436  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.
437  something has been matched). For hard partial matching, we then return  something has been matched). For hard partial matching, we then return
438  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 440  the subject. */ Line 443  the subject. */
443        eptr > md->start_used_ptr) \        eptr > md->start_used_ptr) \
444      { \      { \
445      md->hitend = TRUE; \      md->hitend = TRUE; \
446      if (md->partial > 1) MRRETURN(PCRE_ERROR_PARTIAL); \      if (md->partial > 1) RRETURN(PCRE_ERROR_PARTIAL); \
447      }      }
448    
449  #define SCHECK_PARTIAL()\  #define SCHECK_PARTIAL()\
450    if (md->partial != 0 && eptr > md->start_used_ptr) \    if (md->partial != 0 && eptr > md->start_used_ptr) \
451      { \      { \
452      md->hitend = TRUE; \      md->hitend = TRUE; \
453      if (md->partial > 1) MRRETURN(PCRE_ERROR_PARTIAL); \      if (md->partial > 1) RRETURN(PCRE_ERROR_PARTIAL); \
454      }      }
455    
456    
457  /* Performance note: It might be tempting to extract commonly used fields from  /* Performance note: It might be tempting to extract commonly used fields from
458  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
459  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
460  made performance worse.  made performance worse.
461    
# Line 461  Arguments: Line 464  Arguments:
464     ecode       pointer to current position in compiled code     ecode       pointer to current position in compiled code
465     mstart      pointer to the current match start position (can be modified     mstart      pointer to the current match start position (can be modified
466                   by encountering \K)                   by encountering \K)
    markptr     pointer to the most recent MARK name, or NULL  
467     offset_top  current top pointer     offset_top  current top pointer
468     md          pointer to "static" info for the match     md          pointer to "static" info for the match
469     eptrb       pointer to chain of blocks containing eptr at start of     eptrb       pointer to chain of blocks containing eptr at start of
# Line 476  Returns:       MATCH_MATCH if matched Line 478  Returns:       MATCH_MATCH if matched
478  */  */
479    
480  static int  static int
481  match(REGISTER USPTR eptr, REGISTER const uschar *ecode, USPTR mstart,  match(REGISTER PCRE_PUCHAR eptr, REGISTER const pcre_uchar *ecode,
482    const uschar *markptr, int offset_top, match_data *md, eptrblock *eptrb,    PCRE_PUCHAR mstart, int offset_top, match_data *md, eptrblock *eptrb,
483    unsigned int rdepth)    unsigned int rdepth)
484  {  {
485  /* 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 487  so they can be ordinary variables in all Line 489  so they can be ordinary variables in all
489  register int  rrc;         /* Returns from recursive calls */  register int  rrc;         /* Returns from recursive calls */
490  register int  i;           /* Used for loops not involving calls to RMATCH() */  register int  i;           /* Used for loops not involving calls to RMATCH() */
491  register unsigned int c;   /* Character values not kept over RMATCH() calls */  register unsigned int c;   /* Character values not kept over RMATCH() calls */
492  register BOOL utf8;        /* Local copy of UTF-8 flag for speed */  register BOOL utf;         /* Local copy of UTF flag for speed */
493    
494  BOOL minimize, possessive; /* Quantifier options */  BOOL minimize, possessive; /* Quantifier options */
495  BOOL caseless;  BOOL caseless;
496  int condcode;  int condcode;
497    
498  /* 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
499  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
500  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
501  heap whenever RMATCH() does a "recursion". See the macro definitions above. */  whenever RMATCH() does a "recursion". See the macro definitions above. Putting
502    the top-level on the stack rather than malloc-ing them all gives a performance
503    boost in many cases where there is not much "recursion". */
504    
505  #ifdef NO_RECURSE  #ifdef NO_RECURSE
506  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 */  
507    
508  /* Copy in the original argument variables */  /* Copy in the original argument variables */
509    
510  frame->Xeptr = eptr;  frame->Xeptr = eptr;
511  frame->Xecode = ecode;  frame->Xecode = ecode;
512  frame->Xmstart = mstart;  frame->Xmstart = mstart;
 frame->Xmarkptr = markptr;  
513  frame->Xoffset_top = offset_top;  frame->Xoffset_top = offset_top;
514  frame->Xeptrb = eptrb;  frame->Xeptrb = eptrb;
515  frame->Xrdepth = rdepth;  frame->Xrdepth = rdepth;
# Line 522  HEAP_RECURSE: Line 523  HEAP_RECURSE:
523  #define eptr               frame->Xeptr  #define eptr               frame->Xeptr
524  #define ecode              frame->Xecode  #define ecode              frame->Xecode
525  #define mstart             frame->Xmstart  #define mstart             frame->Xmstart
 #define markptr            frame->Xmarkptr  
526  #define offset_top         frame->Xoffset_top  #define offset_top         frame->Xoffset_top
527  #define eptrb              frame->Xeptrb  #define eptrb              frame->Xeptrb
528  #define rdepth             frame->Xrdepth  #define rdepth             frame->Xrdepth
529    
530  /* Ditto for the local variables */  /* Ditto for the local variables */
531    
532  #ifdef SUPPORT_UTF8  #ifdef SUPPORT_UTF
533  #define charptr            frame->Xcharptr  #define charptr            frame->Xcharptr
534  #endif  #endif
535  #define callpat            frame->Xcallpat  #define callpat            frame->Xcallpat
# Line 550  HEAP_RECURSE: Line 550  HEAP_RECURSE:
550  #define prop_type          frame->Xprop_type  #define prop_type          frame->Xprop_type
551  #define prop_value         frame->Xprop_value  #define prop_value         frame->Xprop_value
552  #define prop_fail_result   frame->Xprop_fail_result  #define prop_fail_result   frame->Xprop_fail_result
 #define prop_category      frame->Xprop_category  
 #define prop_chartype      frame->Xprop_chartype  
 #define prop_script        frame->Xprop_script  
553  #define oclength           frame->Xoclength  #define oclength           frame->Xoclength
554  #define occhars            frame->Xocchars  #define occhars            frame->Xocchars
555  #endif  #endif
# Line 590  declarations can be cut out in a block. Line 587  declarations can be cut out in a block.
587  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
588  to RMATCH(). */  to RMATCH(). */
589    
590  #ifdef SUPPORT_UTF8  #ifdef SUPPORT_UTF
591  const uschar *charptr;  const pcre_uchar *charptr;
592  #endif  #endif
593  const uschar *callpat;  const pcre_uchar *callpat;
594  const uschar *data;  const pcre_uchar *data;
595  const uschar *next;  const pcre_uchar *next;
596  USPTR         pp;  PCRE_PUCHAR       pp;
597  const uschar *prev;  const pcre_uchar *prev;
598  USPTR         saved_eptr;  PCRE_PUCHAR       saved_eptr;
599    
600  recursion_info new_recursive;  recursion_info new_recursive;
601    
602  BOOL cur_is_word;  BOOL cur_is_word;
603  BOOL condition;  BOOL condition;
604  BOOL prev_is_word;  BOOL prev_is_word;
605    
# Line 610  BOOL prev_is_word; Line 607  BOOL prev_is_word;
607  int prop_type;  int prop_type;
608  int prop_value;  int prop_value;
609  int prop_fail_result;  int prop_fail_result;
 int prop_category;  
 int prop_chartype;  
 int prop_script;  
610  int oclength;  int oclength;
611  uschar occhars[8];  pcre_uchar occhars[6];
612  #endif  #endif
613    
614  int codelink;  int codelink;
# Line 630  int save_offset1, save_offset2, save_off Line 624  int save_offset1, save_offset2, save_off
624  int stacksave[REC_STACK_SAVE_MAX];  int stacksave[REC_STACK_SAVE_MAX];
625    
626  eptrblock newptrb;  eptrblock newptrb;
627    
628    /* There is a special fudge for calling match() in a way that causes it to
629    measure the size of its basic stack frame when the stack is being used for
630    recursion. The second argument (ecode) being NULL triggers this behaviour. It
631    cannot normally ever be NULL. The return is the negated value of the frame
632    size. */
633    
634    if (ecode == NULL)
635      {
636      if (rdepth == 0)
637        return match((PCRE_PUCHAR)&rdepth, NULL, NULL, 0, NULL, NULL, 1);
638      else
639        {
640        int len = (char *)&rdepth - (char *)eptr;
641        return (len > 0)? -len : len;
642        }
643      }
644  #endif     /* NO_RECURSE */  #endif     /* NO_RECURSE */
645    
646  /* 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
647  of the local variables that are used only in localised parts of the code, but  of the local variables that are used only in localised parts of the code, but
648  still need to be preserved over recursive calls of match(). These macros define  still need to be preserved over recursive calls of match(). These macros define
649  the alternative names that are used. */  the alternative names that are used. */
650    
651  #define allow_zero    cur_is_word  #define allow_zero    cur_is_word
# Line 642  the alternative names that are used. */ Line 653  the alternative names that are used. */
653  #define code_offset   codelink  #define code_offset   codelink
654  #define condassert    condition  #define condassert    condition
655  #define matched_once  prev_is_word  #define matched_once  prev_is_word
656    #define foc           number
657    #define save_mark     data
658    
659  /* These statements are here to stop the compiler complaining about unitialized  /* These statements are here to stop the compiler complaining about unitialized
660  variables. */  variables. */
# Line 667  defined). However, RMATCH isn't like a f Line 680  defined). However, RMATCH isn't like a f
680  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,
681  however, impact performance when true recursion is being used. */  however, impact performance when true recursion is being used. */
682    
683  #ifdef SUPPORT_UTF8  #ifdef SUPPORT_UTF
684  utf8 = md->utf8;       /* Local copy of the flag */  utf = md->utf;       /* Local copy of the flag */
685  #else  #else
686  utf8 = FALSE;  utf = FALSE;
687  #endif  #endif
688    
689  /* 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 680  if (md->match_call_count++ >= md->match_ Line 693  if (md->match_call_count++ >= md->match_
693  if (rdepth >= md->match_limit_recursion) RRETURN(PCRE_ERROR_RECURSIONLIMIT);  if (rdepth >= md->match_limit_recursion) RRETURN(PCRE_ERROR_RECURSIONLIMIT);
694    
695  /* At the start of a group with an unlimited repeat that may match an empty  /* At the start of a group with an unlimited repeat that may match an empty
696  string, the variable md->match_function_type is set to MATCH_CBEGROUP. It is  string, the variable md->match_function_type is set to MATCH_CBEGROUP. It is
697  done this way to save having to use another function argument, which would take  done this way to save having to use another function argument, which would take
698  up space on the stack. See also MATCH_CONDASSERT below.  up space on the stack. See also MATCH_CONDASSERT below.
699    
700  When MATCH_CBEGROUP is set, add the current subject pointer to the chain of  When MATCH_CBEGROUP is set, add the current subject pointer to the chain of
# Line 705  for (;;) Line 718  for (;;)
718    {    {
719    minimize = possessive = FALSE;    minimize = possessive = FALSE;
720    op = *ecode;    op = *ecode;
721    
722    switch(op)    switch(op)
723      {      {
724      case OP_MARK:      case OP_MARK:
725      markptr = ecode + 2;      md->nomatch_mark = ecode + 2;
726      RMATCH(eptr, ecode + _pcre_OP_lengths[*ecode] + ecode[1], offset_top, md,      md->mark = NULL;    /* In case previously set by assertion */
727        RMATCH(eptr, ecode + PRIV(OP_lengths)[*ecode] + ecode[1], offset_top, md,
728        eptrb, RM55);        eptrb, RM55);
729        if ((rrc == MATCH_MATCH || rrc == MATCH_ACCEPT) &&
730             md->mark == NULL) md->mark = ecode + 2;
731    
732      /* 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
733      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 720  for (;;) Line 736  for (;;)
736      position and return MATCH_SKIP. Otherwise, pass back the return code      position and return MATCH_SKIP. Otherwise, pass back the return code
737      unaltered. */      unaltered. */
738    
739      if (rrc == MATCH_SKIP_ARG &&      else if (rrc == MATCH_SKIP_ARG &&
740          strcmp((char *)markptr, (char *)(md->start_match_ptr)) == 0)          STRCMP_UC_UC(ecode + 2, md->start_match_ptr) == 0)
741        {        {
742        md->start_match_ptr = eptr;        md->start_match_ptr = eptr;
743        RRETURN(MATCH_SKIP);        RRETURN(MATCH_SKIP);
744        }        }
   
     if (md->mark == NULL) md->mark = markptr;  
745      RRETURN(rrc);      RRETURN(rrc);
746    
747      case OP_FAIL:      case OP_FAIL:
748      MRRETURN(MATCH_NOMATCH);      RRETURN(MATCH_NOMATCH);
749    
750      /* COMMIT overrides PRUNE, SKIP, and THEN */      /* COMMIT overrides PRUNE, SKIP, and THEN */
751    
752      case OP_COMMIT:      case OP_COMMIT:
753      RMATCH(eptr, ecode + _pcre_OP_lengths[*ecode], offset_top, md,      RMATCH(eptr, ecode + PRIV(OP_lengths)[*ecode], offset_top, md,
754        eptrb, RM52);        eptrb, RM52);
755      if (rrc != MATCH_NOMATCH && rrc != MATCH_PRUNE &&      if (rrc != MATCH_NOMATCH && rrc != MATCH_PRUNE &&
756          rrc != MATCH_SKIP && rrc != MATCH_SKIP_ARG &&          rrc != MATCH_SKIP && rrc != MATCH_SKIP_ARG &&
757          rrc != MATCH_THEN)          rrc != MATCH_THEN)
758        RRETURN(rrc);        RRETURN(rrc);
759      MRRETURN(MATCH_COMMIT);      RRETURN(MATCH_COMMIT);
760    
761      /* PRUNE overrides THEN */      /* PRUNE overrides THEN */
762    
763      case OP_PRUNE:      case OP_PRUNE:
764      RMATCH(eptr, ecode + _pcre_OP_lengths[*ecode], offset_top, md,      RMATCH(eptr, ecode + PRIV(OP_lengths)[*ecode], offset_top, md,
765        eptrb, RM51);        eptrb, RM51);
766      if (rrc != MATCH_NOMATCH && rrc != MATCH_THEN) RRETURN(rrc);      if (rrc != MATCH_NOMATCH && rrc != MATCH_THEN) RRETURN(rrc);
767      MRRETURN(MATCH_PRUNE);      RRETURN(MATCH_PRUNE);
768    
769      case OP_PRUNE_ARG:      case OP_PRUNE_ARG:
770      RMATCH(eptr, ecode + _pcre_OP_lengths[*ecode] + ecode[1], offset_top, md,      md->nomatch_mark = ecode + 2;
771        md->mark = NULL;    /* In case previously set by assertion */
772        RMATCH(eptr, ecode + PRIV(OP_lengths)[*ecode] + ecode[1], offset_top, md,
773        eptrb, RM56);        eptrb, RM56);
774        if ((rrc == MATCH_MATCH || rrc == MATCH_ACCEPT) &&
775             md->mark == NULL) md->mark = ecode + 2;
776      if (rrc != MATCH_NOMATCH && rrc != MATCH_THEN) RRETURN(rrc);      if (rrc != MATCH_NOMATCH && rrc != MATCH_THEN) RRETURN(rrc);
     md->mark = ecode + 2;  
777      RRETURN(MATCH_PRUNE);      RRETURN(MATCH_PRUNE);
778    
779      /* SKIP overrides PRUNE and THEN */      /* SKIP overrides PRUNE and THEN */
780    
781      case OP_SKIP:      case OP_SKIP:
782      RMATCH(eptr, ecode + _pcre_OP_lengths[*ecode], offset_top, md,      RMATCH(eptr, ecode + PRIV(OP_lengths)[*ecode], offset_top, md,
783        eptrb, RM53);        eptrb, RM53);
784      if (rrc != MATCH_NOMATCH && rrc != MATCH_PRUNE && rrc != MATCH_THEN)      if (rrc != MATCH_NOMATCH && rrc != MATCH_PRUNE && rrc != MATCH_THEN)
785        RRETURN(rrc);        RRETURN(rrc);
786      md->start_match_ptr = eptr;   /* Pass back current position */      md->start_match_ptr = eptr;   /* Pass back current position */
787      MRRETURN(MATCH_SKIP);      RRETURN(MATCH_SKIP);
788    
789        /* Note that, for Perl compatibility, SKIP with an argument does NOT set
790        nomatch_mark. There is a flag that disables this opcode when re-matching a
791        pattern that ended with a SKIP for which there was not a matching MARK. */
792    
793      case OP_SKIP_ARG:      case OP_SKIP_ARG:
794      RMATCH(eptr, ecode + _pcre_OP_lengths[*ecode] + ecode[1], offset_top, md,      if (md->ignore_skip_arg)
795          {
796          ecode += PRIV(OP_lengths)[*ecode] + ecode[1];
797          break;
798          }
799        RMATCH(eptr, ecode + PRIV(OP_lengths)[*ecode] + ecode[1], offset_top, md,
800        eptrb, RM57);        eptrb, RM57);
801      if (rrc != MATCH_NOMATCH && rrc != MATCH_PRUNE && rrc != MATCH_THEN)      if (rrc != MATCH_NOMATCH && rrc != MATCH_PRUNE && rrc != MATCH_THEN)
802        RRETURN(rrc);        RRETURN(rrc);
803    
804      /* 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
805      returning the special MATCH_SKIP_ARG return code. This will either be      returning the special MATCH_SKIP_ARG return code. This will either be
806      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
807      as PRUNE. */      with the md->ignore_skip_arg flag set. */
808    
809      md->start_match_ptr = ecode + 2;      md->start_match_ptr = ecode + 2;
810      RRETURN(MATCH_SKIP_ARG);      RRETURN(MATCH_SKIP_ARG);
811    
812      /* 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
813      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
814      to skip back past alternatives that precede the THEN within the current      match pointer to do this. */
     branch. */  
815    
816      case OP_THEN:      case OP_THEN:
817      RMATCH(eptr, ecode + _pcre_OP_lengths[*ecode], offset_top, md,      RMATCH(eptr, ecode + PRIV(OP_lengths)[*ecode], offset_top, md,
818        eptrb, RM54);        eptrb, RM54);
819      if (rrc != MATCH_NOMATCH) RRETURN(rrc);      if (rrc != MATCH_NOMATCH) RRETURN(rrc);
820      md->start_match_ptr = ecode - GET(ecode, 1);      md->start_match_ptr = ecode;
821      MRRETURN(MATCH_THEN);      RRETURN(MATCH_THEN);
822    
823      case OP_THEN_ARG:      case OP_THEN_ARG:
824      RMATCH(eptr, ecode + _pcre_OP_lengths[*ecode] + ecode[1+LINK_SIZE],      md->nomatch_mark = ecode + 2;
825        offset_top, md, eptrb, RM58);      md->mark = NULL;    /* In case previously set by assertion */
826        RMATCH(eptr, ecode + PRIV(OP_lengths)[*ecode] + ecode[1], offset_top,
827          md, eptrb, RM58);
828        if ((rrc == MATCH_MATCH || rrc == MATCH_ACCEPT) &&
829             md->mark == NULL) md->mark = ecode + 2;
830      if (rrc != MATCH_NOMATCH) RRETURN(rrc);      if (rrc != MATCH_NOMATCH) RRETURN(rrc);
831      md->start_match_ptr = ecode - GET(ecode, 1);      md->start_match_ptr = ecode;
     md->mark = ecode + LINK_SIZE + 2;  
832      RRETURN(MATCH_THEN);      RRETURN(MATCH_THEN);
833    
834        /* Handle an atomic group that does not contain any capturing parentheses.
835        This can be handled like an assertion. Prior to 8.13, all atomic groups
836        were handled this way. In 8.13, the code was changed as below for ONCE, so
837        that backups pass through the group and thereby reset captured values.
838        However, this uses a lot more stack, so in 8.20, atomic groups that do not
839        contain any captures generate OP_ONCE_NC, which can be handled in the old,
840        less stack intensive way.
841    
842        Check the alternative branches in turn - the matching won't pass the KET
843        for this kind of subpattern. If any one branch matches, we carry on as at
844        the end of a normal bracket, leaving the subject pointer, but resetting
845        the start-of-match value in case it was changed by \K. */
846    
847        case OP_ONCE_NC:
848        prev = ecode;
849        saved_eptr = eptr;
850        save_mark = md->mark;
851        do
852          {
853          RMATCH(eptr, ecode + 1 + LINK_SIZE, offset_top, md, eptrb, RM64);
854          if (rrc == MATCH_MATCH)  /* Note: _not_ MATCH_ACCEPT */
855            {
856            mstart = md->start_match_ptr;
857            break;
858            }
859          if (rrc == MATCH_THEN)
860            {
861            next = ecode + GET(ecode,1);
862            if (md->start_match_ptr < next &&
863                (*ecode == OP_ALT || *next == OP_ALT))
864              rrc = MATCH_NOMATCH;
865            }
866    
867          if (rrc != MATCH_NOMATCH) RRETURN(rrc);
868          ecode += GET(ecode,1);
869          md->mark = save_mark;
870          }
871        while (*ecode == OP_ALT);
872    
873        /* If hit the end of the group (which could be repeated), fail */
874    
875        if (*ecode != OP_ONCE_NC && *ecode != OP_ALT) RRETURN(MATCH_NOMATCH);
876    
877        /* Continue as from after the group, updating the offsets high water
878        mark, since extracts may have been taken. */
879    
880        do ecode += GET(ecode, 1); while (*ecode == OP_ALT);
881    
882        offset_top = md->end_offset_top;
883        eptr = md->end_match_ptr;
884    
885        /* For a non-repeating ket, just continue at this level. This also
886        happens for a repeating ket if no characters were matched in the group.
887        This is the forcible breaking of infinite loops as implemented in Perl
888        5.005. */
889    
890        if (*ecode == OP_KET || eptr == saved_eptr)
891          {
892          ecode += 1+LINK_SIZE;
893          break;
894          }
895    
896        /* The repeating kets try the rest of the pattern or restart from the
897        preceding bracket, in the appropriate order. The second "call" of match()
898        uses tail recursion, to avoid using another stack frame. */
899    
900        if (*ecode == OP_KETRMIN)
901          {
902          RMATCH(eptr, ecode + 1 + LINK_SIZE, offset_top, md, eptrb, RM65);
903          if (rrc != MATCH_NOMATCH) RRETURN(rrc);
904          ecode = prev;
905          goto TAIL_RECURSE;
906          }
907        else  /* OP_KETRMAX */
908          {
909          RMATCH(eptr, prev, offset_top, md, eptrb, RM66);
910          if (rrc != MATCH_NOMATCH) RRETURN(rrc);
911          ecode += 1 + LINK_SIZE;
912          goto TAIL_RECURSE;
913          }
914        /* Control never gets here */
915    
916      /* Handle a capturing bracket, other than those that are possessive with an      /* Handle a capturing bracket, other than those that are possessive with an
917      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
918      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
919      change the current values of the data slot, because they may be set from a      change the current values of the data slot, because they may be set from a
920      previous iteration of this group, and be referred to by a reference inside      previous iteration of this group, and be referred to by a reference inside
921      the group. If we fail to match, we need to restore this value and also the      the group. A failure to match might occur after the group has succeeded,
922      values of the final offsets, in case they were set by a previous iteration      if something later on doesn't match. For this reason, we need to restore
923      of the same bracket.      the working value and also the values of the final offsets, in case they
924        were set by a previous iteration of the same bracket.
925    
926      If there isn't enough space in the offset vector, treat this as if it were      If there isn't enough space in the offset vector, treat this as if it were
927      a non-capturing bracket. Don't worry about setting the flag for the error      a non-capturing bracket. Don't worry about setting the flag for the error
# Line 820  for (;;) Line 931  for (;;)
931      case OP_SCBRA:      case OP_SCBRA:
932      number = GET2(ecode, 1+LINK_SIZE);      number = GET2(ecode, 1+LINK_SIZE);
933      offset = number << 1;      offset = number << 1;
934    
935  #ifdef PCRE_DEBUG  #ifdef PCRE_DEBUG
936      printf("start bracket %d\n", number);      printf("start bracket %d\n", number);
937      printf("subject=");      printf("subject=");
# Line 834  for (;;) Line 945  for (;;)
945        save_offset2 = md->offset_vector[offset+1];        save_offset2 = md->offset_vector[offset+1];
946        save_offset3 = md->offset_vector[md->offset_end - number];        save_offset3 = md->offset_vector[md->offset_end - number];
947        save_capture_last = md->capture_last;        save_capture_last = md->capture_last;
948          save_mark = md->mark;
949    
950        DPRINTF(("saving %d %d %d\n", save_offset1, save_offset2, save_offset3));        DPRINTF(("saving %d %d %d\n", save_offset1, save_offset2, save_offset3));
951        md->offset_vector[md->offset_end - number] =        md->offset_vector[md->offset_end - number] =
# Line 841  for (;;) Line 953  for (;;)
953    
954        for (;;)        for (;;)
955          {          {
956          if (op >= OP_SBRA) md->match_function_type = MATCH_CBEGROUP;          if (op >= OP_SBRA) md->match_function_type = MATCH_CBEGROUP;
957          RMATCH(eptr, ecode + _pcre_OP_lengths[*ecode], offset_top, md,          RMATCH(eptr, ecode + PRIV(OP_lengths)[*ecode], offset_top, md,
958            eptrb, RM1);            eptrb, RM1);
959          if (rrc != MATCH_NOMATCH &&          if (rrc == MATCH_ONCE) break;  /* Backing up through an atomic group */
             (rrc != MATCH_THEN || md->start_match_ptr != ecode))  
           RRETURN(rrc);  
960    
961          /* If md->end_offset_top is greater than offset_top, it means that the          /* If we backed up to a THEN, check whether it is within the current
962          branch we have just failed to match did manage to match some capturing          branch by comparing the address of the THEN that is passed back with
963          parentheses within an atomic group or an assertion. Although offset_top          the end of the branch. If it is within the current branch, and the
964          reverts to its original value at this level, we must unset the captured          branch is one of two or more alternatives (it either starts or ends
965          values in case a later match sets a higher capturing number. Example:          with OP_ALT), we have reached the limit of THEN's action, so convert
966          matching /((?>(a))b|(a)c)/ against "ac". This captures 3, but we need          the return code to NOMATCH, which will cause normal backtracking to
967          to ensure that 2 - which was captured in the atomic matching - is          happen from now on. Otherwise, THEN is passed back to an outer
968          unset. */          alternative. This implements Perl's treatment of parenthesized groups,
969            where a group not containing | does not affect the current alternative,
970          if (md->end_offset_top > offset_top)          that is, (X) is NOT the same as (X|(*F)). */
971            {  
972            register int *iptr = md->offset_vector + offset_top;          if (rrc == MATCH_THEN)
973            register int *iend = md->offset_vector + md->end_offset_top;            {
974            while (iptr < iend) *iptr++ = -1;            next = ecode + GET(ecode,1);
975              if (md->start_match_ptr < next &&
976                  (*ecode == OP_ALT || *next == OP_ALT))
977                rrc = MATCH_NOMATCH;
978            }            }
979    
980            /* Anything other than NOMATCH is passed back. */
981    
982            if (rrc != MATCH_NOMATCH) RRETURN(rrc);
983          md->capture_last = save_capture_last;          md->capture_last = save_capture_last;
984          ecode += GET(ecode, 1);          ecode += GET(ecode, 1);
985          if (*ecode != OP_ALT) break;          md->mark = save_mark;
986            if (*ecode != OP_ALT) break;
987          }          }
988    
989        DPRINTF(("bracket %d failed\n", number));        DPRINTF(("bracket %d failed\n", number));
   
990        md->offset_vector[offset] = save_offset1;        md->offset_vector[offset] = save_offset1;
991        md->offset_vector[offset+1] = save_offset2;        md->offset_vector[offset+1] = save_offset2;
992        md->offset_vector[md->offset_end - number] = save_offset3;        md->offset_vector[md->offset_end - number] = save_offset3;
993    
994        if (rrc != MATCH_THEN && md->mark == NULL) md->mark = markptr;        /* At this point, rrc will be one of MATCH_ONCE or MATCH_NOMATCH. */
995        RRETURN(MATCH_NOMATCH);  
996          RRETURN(rrc);
997        }        }
998    
999      /* FALL THROUGH ... Insufficient room for saving captured contents. Treat      /* FALL THROUGH ... Insufficient room for saving captured contents. Treat
# Line 890  for (;;) Line 1007  for (;;)
1007      /* VVVVVVVVVVVVVVVVVVVVVVVVV */      /* VVVVVVVVVVVVVVVVVVVVVVVVV */
1008      /* VVVVVVVVVVVVVVVVVVVVVVVVV */      /* VVVVVVVVVVVVVVVVVVVVVVVVV */
1009    
1010      /* Non-capturing bracket, except for possessive with unlimited repeat. Loop      /* Non-capturing or atomic group, except for possessive with unlimited
1011      for all the alternatives. When we get to the final alternative within the      repeat and ONCE group with no captures. Loop for all the alternatives.
1012      brackets, we used to return the result of a recursive call to match()  
1013      whatever happened so it was possible to reduce stack usage by turning this      When we get to the final alternative within the brackets, we used to return
1014      into a tail recursion, except in the case of a possibly empty group.      the result of a recursive call to match() whatever happened so it was
1015      However, now that there is the possiblity of (*THEN) occurring in the final      possible to reduce stack usage by turning this into a tail recursion,
1016      alternative, this optimization is no longer possible. */      except in the case of a possibly empty group. However, now that there is
1017        the possiblity of (*THEN) occurring in the final alternative, this
1018        optimization is no longer always possible.
1019    
1020        We can optimize if we know there are no (*THEN)s in the pattern; at present
1021        this is the best that can be done.
1022    
1023        MATCH_ONCE is returned when the end of an atomic group is successfully
1024        reached, but subsequent matching fails. It passes back up the tree (causing
1025        captured values to be reset) until the original atomic group level is
1026        reached. This is tested by comparing md->once_target with the start of the
1027        group. At this point, the return is converted into MATCH_NOMATCH so that
1028        previous backup points can be taken. */
1029    
1030        case OP_ONCE:
1031      case OP_BRA:      case OP_BRA:
1032      case OP_SBRA:      case OP_SBRA:
1033      DPRINTF(("start non-capturing bracket\n"));      DPRINTF(("start non-capturing bracket\n"));
1034    
1035      for (;;)      for (;;)
1036        {        {
1037        if (op >= OP_SBRA) md->match_function_type = MATCH_CBEGROUP;        if (op >= OP_SBRA || op == OP_ONCE)
1038        RMATCH(eptr, ecode + _pcre_OP_lengths[*ecode], offset_top, md, eptrb,          md->match_function_type = MATCH_CBEGROUP;
1039    
1040          /* If this is not a possibly empty group, and there are no (*THEN)s in
1041          the pattern, and this is the final alternative, optimize as described
1042          above. */
1043    
1044          else if (!md->hasthen && ecode[GET(ecode, 1)] != OP_ALT)
1045            {
1046            ecode += PRIV(OP_lengths)[*ecode];
1047            goto TAIL_RECURSE;
1048            }
1049    
1050          /* In all other cases, we have to make another call to match(). */
1051    
1052          save_mark = md->mark;
1053          RMATCH(eptr, ecode + PRIV(OP_lengths)[*ecode], offset_top, md, eptrb,
1054          RM2);          RM2);
       if (rrc != MATCH_NOMATCH &&  
           (rrc != MATCH_THEN || md->start_match_ptr != ecode))  
         RRETURN(rrc);  
1055    
1056        /* See explanatory comment above under OP_CBRA. */        /* See comment in the code for capturing groups above about handling
1057          THEN. */
1058        if (md->end_offset_top > offset_top)  
1059          {        if (rrc == MATCH_THEN)
1060          register int *iptr = md->offset_vector + offset_top;          {
1061          register int *iend = md->offset_vector + md->end_offset_top;          next = ecode + GET(ecode,1);
1062          while (iptr < iend) *iptr++ = -1;          if (md->start_match_ptr < next &&
1063                (*ecode == OP_ALT || *next == OP_ALT))
1064              rrc = MATCH_NOMATCH;
1065          }          }
1066    
1067          if (rrc != MATCH_NOMATCH)
1068            {
1069            if (rrc == MATCH_ONCE)
1070              {
1071              const pcre_uchar *scode = ecode;
1072              if (*scode != OP_ONCE)           /* If not at start, find it */
1073                {
1074                while (*scode == OP_ALT) scode += GET(scode, 1);
1075                scode -= GET(scode, 1);
1076                }
1077              if (md->once_target == scode) rrc = MATCH_NOMATCH;
1078              }
1079            RRETURN(rrc);
1080            }
1081        ecode += GET(ecode, 1);        ecode += GET(ecode, 1);
1082        if (*ecode != OP_ALT) break;        md->mark = save_mark;
1083          if (*ecode != OP_ALT) break;
1084        }        }
1085    
     if (rrc != MATCH_THEN && md->mark == NULL) md->mark = markptr;  
1086      RRETURN(MATCH_NOMATCH);      RRETURN(MATCH_NOMATCH);
1087    
1088      /* Handle possessive capturing brackets with an unlimited repeat. We come      /* Handle possessive capturing brackets with an unlimited repeat. We come
1089      here from BRAZERO with allow_zero set TRUE. The offset_vector values are      here from BRAZERO with allow_zero set TRUE. The offset_vector values are
1090      handled similarly to the normal case above. However, the matching is      handled similarly to the normal case above. However, the matching is
1091      different. The end of these brackets will always be OP_KETRPOS, which      different. The end of these brackets will always be OP_KETRPOS, which
1092      returns MATCH_KETRPOS without going further in the pattern. By this means      returns MATCH_KETRPOS without going further in the pattern. By this means
1093      we can handle the group by iteration rather than recursion, thereby      we can handle the group by iteration rather than recursion, thereby
1094      reducing the amount of stack needed. */      reducing the amount of stack needed. */
1095    
1096      case OP_CBRAPOS:      case OP_CBRAPOS:
1097      case OP_SCBRAPOS:      case OP_SCBRAPOS:
1098      allow_zero = FALSE;      allow_zero = FALSE;
1099    
1100      POSSESSIVE_CAPTURE:      POSSESSIVE_CAPTURE:
1101      number = GET2(ecode, 1+LINK_SIZE);      number = GET2(ecode, 1+LINK_SIZE);
1102      offset = number << 1;      offset = number << 1;
# Line 952  for (;;) Line 1111  for (;;)
1111      if (offset < md->offset_max)      if (offset < md->offset_max)
1112        {        {
1113        matched_once = FALSE;        matched_once = FALSE;
1114        code_offset = ecode - md->start_code;        code_offset = (int)(ecode - md->start_code);
1115    
1116        save_offset1 = md->offset_vector[offset];        save_offset1 = md->offset_vector[offset];
1117        save_offset2 = md->offset_vector[offset+1];        save_offset2 = md->offset_vector[offset+1];
# Line 960  for (;;) Line 1119  for (;;)
1119        save_capture_last = md->capture_last;        save_capture_last = md->capture_last;
1120    
1121        DPRINTF(("saving %d %d %d\n", save_offset1, save_offset2, save_offset3));        DPRINTF(("saving %d %d %d\n", save_offset1, save_offset2, save_offset3));
1122    
1123        /* Each time round the loop, save the current subject position for use        /* Each time round the loop, save the current subject position for use
1124        when the group matches. For MATCH_MATCH, the group has matched, so we        when the group matches. For MATCH_MATCH, the group has matched, so we
1125        restart it with a new subject starting position, remembering that we had        restart it with a new subject starting position, remembering that we had
1126        at least one match. For MATCH_NOMATCH, carry on with the alternatives, as        at least one match. For MATCH_NOMATCH, carry on with the alternatives, as
1127        usual. If we haven't matched any alternatives in any iteration, check to        usual. If we haven't matched any alternatives in any iteration, check to
1128        see if a previous iteration matched. If so, the group has matched;        see if a previous iteration matched. If so, the group has matched;
1129        continue from afterwards. Otherwise it has failed; restore the previous        continue from afterwards. Otherwise it has failed; restore the previous
1130        capture values before returning NOMATCH. */        capture values before returning NOMATCH. */
1131    
1132        for (;;)        for (;;)
1133          {          {
1134          md->offset_vector[md->offset_end - number] =          md->offset_vector[md->offset_end - number] =
1135            (int)(eptr - md->start_subject);            (int)(eptr - md->start_subject);
1136          if (op >= OP_SBRA) md->match_function_type = MATCH_CBEGROUP;          if (op >= OP_SBRA) md->match_function_type = MATCH_CBEGROUP;
1137          RMATCH(eptr, ecode + _pcre_OP_lengths[*ecode], offset_top, md,          RMATCH(eptr, ecode + PRIV(OP_lengths)[*ecode], offset_top, md,
1138            eptrb, RM63);            eptrb, RM63);
1139          if (rrc == MATCH_KETRPOS)          if (rrc == MATCH_KETRPOS)
1140            {            {
1141            offset_top = md->end_offset_top;            offset_top = md->end_offset_top;
1142            eptr = md->end_match_ptr;            eptr = md->end_match_ptr;
1143            ecode = md->start_code + code_offset;            ecode = md->start_code + code_offset;
1144            save_capture_last = md->capture_last;            save_capture_last = md->capture_last;
1145            matched_once = TRUE;            matched_once = TRUE;
1146            continue;            continue;
1147            }            }
         if (rrc != MATCH_NOMATCH &&  
             (rrc != MATCH_THEN || md->start_match_ptr != ecode))  
           RRETURN(rrc);  
1148    
1149          /* See explanatory comment above under OP_CBRA. */          /* See comment in the code for capturing groups above about handling
1150            THEN. */
1151          if (md->end_offset_top > offset_top)  
1152            if (rrc == MATCH_THEN)
1153            {            {
1154            register int *iptr = md->offset_vector + offset_top;            next = ecode + GET(ecode,1);
1155            register int *iend = md->offset_vector + md->end_offset_top;            if (md->start_match_ptr < next &&
1156            while (iptr < iend) *iptr++ = -1;                (*ecode == OP_ALT || *next == OP_ALT))
1157                rrc = MATCH_NOMATCH;
1158            }            }
1159    
1160            if (rrc != MATCH_NOMATCH) RRETURN(rrc);
1161          md->capture_last = save_capture_last;          md->capture_last = save_capture_last;
1162          ecode += GET(ecode, 1);          ecode += GET(ecode, 1);
1163          if (*ecode != OP_ALT) break;          if (*ecode != OP_ALT) break;
1164          }          }
1165    
1166        if (!matched_once)        if (!matched_once)
1167          {          {
1168          md->offset_vector[offset] = save_offset1;          md->offset_vector[offset] = save_offset1;
1169          md->offset_vector[offset+1] = save_offset2;          md->offset_vector[offset+1] = save_offset2;
1170          md->offset_vector[md->offset_end - number] = save_offset3;          md->offset_vector[md->offset_end - number] = save_offset3;
1171          }          }
1172    
       if (rrc != MATCH_THEN && md->mark == NULL) md->mark = markptr;  
1173        if (allow_zero || matched_once)        if (allow_zero || matched_once)
1174          {          {
1175          ecode += 1 + LINK_SIZE;          ecode += 1 + LINK_SIZE;
1176          break;          break;
1177          }          }
1178    
1179        RRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
1180        }        }
1181    
1182      /* FALL THROUGH ... Insufficient room for saving captured contents. Treat      /* FALL THROUGH ... Insufficient room for saving captured contents. Treat
1183      as a non-capturing bracket. */      as a non-capturing bracket. */
1184    
# Line 1032  for (;;) Line 1190  for (;;)
1190      /* VVVVVVVVVVVVVVVVVVVVVVVVV */      /* VVVVVVVVVVVVVVVVVVVVVVVVV */
1191      /* VVVVVVVVVVVVVVVVVVVVVVVVV */      /* VVVVVVVVVVVVVVVVVVVVVVVVV */
1192    
1193      /* Non-capturing possessive bracket with unlimited repeat. We come here      /* Non-capturing possessive bracket with unlimited repeat. We come here
1194      from BRAZERO with allow_zero = TRUE. The code is similar to the above,      from BRAZERO with allow_zero = TRUE. The code is similar to the above,
1195      without the capturing complication. It is written out separately for speed      without the capturing complication. It is written out separately for speed
1196      and cleanliness. */      and cleanliness. */
1197    
1198      case OP_BRAPOS:      case OP_BRAPOS:
1199      case OP_SBRAPOS:      case OP_SBRAPOS:
1200      allow_zero = FALSE;      allow_zero = FALSE;
1201    
1202      POSSESSIVE_NON_CAPTURE:      POSSESSIVE_NON_CAPTURE:
1203      matched_once = FALSE;      matched_once = FALSE;
1204      code_offset = ecode - md->start_code;      code_offset = (int)(ecode - md->start_code);
1205    
1206      for (;;)      for (;;)
1207        {        {
1208        if (op >= OP_SBRA) md->match_function_type = MATCH_CBEGROUP;        if (op >= OP_SBRA) md->match_function_type = MATCH_CBEGROUP;
1209        RMATCH(eptr, ecode + _pcre_OP_lengths[*ecode], offset_top, md,        RMATCH(eptr, ecode + PRIV(OP_lengths)[*ecode], offset_top, md,
1210          eptrb, RM48);          eptrb, RM48);
1211        if (rrc == MATCH_KETRPOS)        if (rrc == MATCH_KETRPOS)
1212          {          {
1213          offset_top = md->end_offset_top;          offset_top = md->end_offset_top;
1214          eptr = md->end_match_ptr;          eptr = md->end_match_ptr;
1215          ecode = md->start_code + code_offset;          ecode = md->start_code + code_offset;
1216          matched_once = TRUE;          matched_once = TRUE;
1217          continue;          continue;
         }  
       if (rrc != MATCH_NOMATCH &&  
           (rrc != MATCH_THEN || md->start_match_ptr != ecode))  
         RRETURN(rrc);  
   
       /* See explanatory comment above under OP_CBRA. */  
   
       if (md->end_offset_top > offset_top)  
         {  
         register int *iptr = md->offset_vector + offset_top;  
         register int *iend = md->offset_vector + md->end_offset_top;  
         while (iptr < iend) *iptr++ = -1;  
1218          }          }
1219    
1220          /* See comment in the code for capturing groups above about handling
1221          THEN. */
1222    
1223          if (rrc == MATCH_THEN)
1224            {
1225            next = ecode + GET(ecode,1);
1226            if (md->start_match_ptr < next &&
1227                (*ecode == OP_ALT || *next == OP_ALT))
1228              rrc = MATCH_NOMATCH;
1229            }
1230    
1231          if (rrc != MATCH_NOMATCH) RRETURN(rrc);
1232        ecode += GET(ecode, 1);        ecode += GET(ecode, 1);
1233        if (*ecode != OP_ALT) break;        if (*ecode != OP_ALT) break;
1234        }        }
1235    
1236      if (matched_once || allow_zero)      if (matched_once || allow_zero)
1237        {        {
1238        ecode += 1 + LINK_SIZE;        ecode += 1 + LINK_SIZE;
1239        break;        break;
1240        }        }
1241      RRETURN(MATCH_NOMATCH);      RRETURN(MATCH_NOMATCH);
1242    
1243      /* Control never reaches here. */      /* Control never reaches here. */
# Line 1098  for (;;) Line 1256  for (;;)
1256    
1257      if (ecode[LINK_SIZE+1] == OP_CALLOUT)      if (ecode[LINK_SIZE+1] == OP_CALLOUT)
1258        {        {
1259        if (pcre_callout != NULL)        if (PUBL(callout) != NULL)
1260          {          {
1261          pcre_callout_block cb;          PUBL(callout_block) cb;
1262          cb.version          = 1;   /* Version 1 of the callout block */          cb.version          = 2;   /* Version 1 of the callout block */
1263          cb.callout_number   = ecode[LINK_SIZE+2];          cb.callout_number   = ecode[LINK_SIZE+2];
1264          cb.offset_vector    = md->offset_vector;          cb.offset_vector    = md->offset_vector;
1265    #ifdef COMPILE_PCRE8
1266          cb.subject          = (PCRE_SPTR)md->start_subject;          cb.subject          = (PCRE_SPTR)md->start_subject;
1267    #else
1268            cb.subject          = (PCRE_SPTR16)md->start_subject;
1269    #endif
1270          cb.subject_length   = (int)(md->end_subject - md->start_subject);          cb.subject_length   = (int)(md->end_subject - md->start_subject);
1271          cb.start_match      = (int)(mstart - md->start_subject);          cb.start_match      = (int)(mstart - md->start_subject);
1272          cb.current_position = (int)(eptr - md->start_subject);          cb.current_position = (int)(eptr - md->start_subject);
# Line 1113  for (;;) Line 1275  for (;;)
1275          cb.capture_top      = offset_top/2;          cb.capture_top      = offset_top/2;
1276          cb.capture_last     = md->capture_last;          cb.capture_last     = md->capture_last;
1277          cb.callout_data     = md->callout_data;          cb.callout_data     = md->callout_data;
1278          if ((rrc = (*pcre_callout)(&cb)) > 0) MRRETURN(MATCH_NOMATCH);          cb.mark             = md->nomatch_mark;
1279            if ((rrc = (*PUBL(callout))(&cb)) > 0) RRETURN(MATCH_NOMATCH);
1280          if (rrc < 0) RRETURN(rrc);          if (rrc < 0) RRETURN(rrc);
1281          }          }
1282        ecode += _pcre_OP_lengths[OP_CALLOUT];        ecode += PRIV(OP_lengths)[OP_CALLOUT];
1283        }        }
1284    
1285      condcode = ecode[LINK_SIZE+1];      condcode = ecode[LINK_SIZE+1];
# Line 1133  for (;;) Line 1296  for (;;)
1296        else        else
1297          {          {
1298          int recno = GET2(ecode, LINK_SIZE + 2);   /* Recursion group number*/          int recno = GET2(ecode, LINK_SIZE + 2);   /* Recursion group number*/
1299          condition =  (recno == RREF_ANY || recno == md->recursive->group_num);          condition = (recno == RREF_ANY || recno == md->recursive->group_num);
1300    
1301          /* If the test is for recursion into a specific subpattern, and it is          /* If the test is for recursion into a specific subpattern, and it is
1302          false, but the test was set up by name, scan the table to see if the          false, but the test was set up by name, scan the table to see if the
1303          name refers to any other numbers, and test them. The condition is true          name refers to any other numbers, and test them. The condition is true
1304          if any one is set. */          if any one is set. */
1305    
1306          if (!condition && condcode == OP_NRREF && recno != RREF_ANY)          if (!condition && condcode == OP_NRREF)
1307            {            {
1308            uschar *slotA = md->name_table;            pcre_uchar *slotA = md->name_table;
1309            for (i = 0; i < md->name_count; i++)            for (i = 0; i < md->name_count; i++)
1310              {              {
1311              if (GET2(slotA, 0) == recno) break;              if (GET2(slotA, 0) == recno) break;
# Line 1155  for (;;) Line 1318  for (;;)
1318    
1319            if (i < md->name_count)            if (i < md->name_count)
1320              {              {
1321              uschar *slotB = slotA;              pcre_uchar *slotB = slotA;
1322              while (slotB > md->name_table)              while (slotB > md->name_table)
1323                {                {
1324                slotB -= md->name_entry_size;                slotB -= md->name_entry_size;
1325                if (strcmp((char *)slotA + 2, (char *)slotB + 2) == 0)                if (STRCMP_UC_UC(slotA + IMM2_SIZE, slotB + IMM2_SIZE) == 0)
1326                  {                  {
1327                  condition = GET2(slotB, 0) == md->recursive->group_num;                  condition = GET2(slotB, 0) == md->recursive->group_num;
1328                  if (condition) break;                  if (condition) break;
# Line 1175  for (;;) Line 1338  for (;;)
1338                for (i++; i < md->name_count; i++)                for (i++; i < md->name_count; i++)
1339                  {                  {
1340                  slotB += md->name_entry_size;                  slotB += md->name_entry_size;
1341                  if (strcmp((char *)slotA + 2, (char *)slotB + 2) == 0)                  if (STRCMP_UC_UC(slotA + IMM2_SIZE, slotB + IMM2_SIZE) == 0)
1342                    {                    {
1343                    condition = GET2(slotB, 0) == md->recursive->group_num;                    condition = GET2(slotB, 0) == md->recursive->group_num;
1344                    if (condition) break;                    if (condition) break;
# Line 1188  for (;;) Line 1351  for (;;)
1351    
1352          /* Chose branch according to the condition */          /* Chose branch according to the condition */
1353    
1354          ecode += condition? 3 : GET(ecode, 1);          ecode += condition? 1 + IMM2_SIZE : GET(ecode, 1);
1355          }          }
1356        }        }
1357    
# Line 1205  for (;;) Line 1368  for (;;)
1368        if (!condition && condcode == OP_NCREF)        if (!condition && condcode == OP_NCREF)
1369          {          {
1370          int refno = offset >> 1;          int refno = offset >> 1;
1371          uschar *slotA = md->name_table;          pcre_uchar *slotA = md->name_table;
1372    
1373          for (i = 0; i < md->name_count; i++)          for (i = 0; i < md->name_count; i++)
1374            {            {
# Line 1219  for (;;) Line 1382  for (;;)
1382    
1383          if (i < md->name_count)          if (i < md->name_count)
1384            {            {
1385            uschar *slotB = slotA;            pcre_uchar *slotB = slotA;
1386            while (slotB > md->name_table)            while (slotB > md->name_table)
1387              {              {
1388              slotB -= md->name_entry_size;              slotB -= md->name_entry_size;
1389              if (strcmp((char *)slotA + 2, (char *)slotB + 2) == 0)              if (STRCMP_UC_UC(slotA + IMM2_SIZE, slotB + IMM2_SIZE) == 0)
1390                {                {
1391                offset = GET2(slotB, 0) << 1;                offset = GET2(slotB, 0) << 1;
1392                condition = offset < offset_top &&                condition = offset < offset_top &&
# Line 1241  for (;;) Line 1404  for (;;)
1404              for (i++; i < md->name_count; i++)              for (i++; i < md->name_count; i++)
1405                {                {
1406                slotB += md->name_entry_size;                slotB += md->name_entry_size;
1407                if (strcmp((char *)slotA + 2, (char *)slotB + 2) == 0)                if (STRCMP_UC_UC(slotA + IMM2_SIZE, slotB + IMM2_SIZE) == 0)
1408                  {                  {
1409                  offset = GET2(slotB, 0) << 1;                  offset = GET2(slotB, 0) << 1;
1410                  condition = offset < offset_top &&                  condition = offset < offset_top &&
# Line 1256  for (;;) Line 1419  for (;;)
1419    
1420        /* Chose branch according to the condition */        /* Chose branch according to the condition */
1421    
1422        ecode += condition? 3 : GET(ecode, 1);        ecode += condition? 1 + IMM2_SIZE : GET(ecode, 1);
1423        }        }
1424    
1425      else if (condcode == OP_DEF)     /* DEFINE - always false */      else if (condcode == OP_DEF)     /* DEFINE - always false */
# Line 1271  for (;;) Line 1434  for (;;)
1434    
1435      else      else
1436        {        {
1437        md->match_function_type = MATCH_CONDASSERT;        md->match_function_type = MATCH_CONDASSERT;
1438        RMATCH(eptr, ecode + 1 + LINK_SIZE, offset_top, md, NULL, RM3);        RMATCH(eptr, ecode + 1 + LINK_SIZE, offset_top, md, NULL, RM3);
1439        if (rrc == MATCH_MATCH)        if (rrc == MATCH_MATCH)
1440          {          {
1441            if (md->end_offset_top > offset_top)
1442              offset_top = md->end_offset_top;  /* Captures may have happened */
1443          condition = TRUE;          condition = TRUE;
1444          ecode += 1 + LINK_SIZE + GET(ecode, LINK_SIZE + 2);          ecode += 1 + LINK_SIZE + GET(ecode, LINK_SIZE + 2);
1445          while (*ecode == OP_ALT) ecode += GET(ecode, 1);          while (*ecode == OP_ALT) ecode += GET(ecode, 1);
1446          }          }
1447        else if (rrc != MATCH_NOMATCH &&  
1448                (rrc != MATCH_THEN || md->start_match_ptr != ecode))        /* PCRE doesn't allow the effect of (*THEN) to escape beyond an
1449          assertion; it is therefore treated as NOMATCH. */
1450    
1451          else if (rrc != MATCH_NOMATCH && rrc != MATCH_THEN)
1452          {          {
1453          RRETURN(rrc);         /* Need braces because of following else */          RRETURN(rrc);         /* Need braces because of following else */
1454          }          }
# Line 1291  for (;;) Line 1459  for (;;)
1459          }          }
1460        }        }
1461    
1462      /* We are now at the branch that is to be obeyed. As there is only one,      /* We are now at the branch that is to be obeyed. As there is only one, can
1463      we used to use tail recursion to avoid using another stack frame, except      use tail recursion to avoid using another stack frame, except when there is
1464      when there was unlimited repeat of a possibly empty group. However, that      unlimited repeat of a possibly empty group. In the latter case, a recursive
1465      strategy no longer works because of the possibilty of (*THEN) being      call to match() is always required, unless the second alternative doesn't
1466      encountered in the branch. A recursive call to match() is always required,      exist, in which case we can just plough on. Note that, for compatibility
1467      unless the second alternative doesn't exist, in which case we can just      with Perl, the | in a conditional group is NOT treated as creating two
1468      plough on. */      alternatives. If a THEN is encountered in the branch, it propagates out to
1469        the enclosing alternative (unless nested in a deeper set of alternatives,
1470        of course). */
1471    
1472      if (condition || *ecode == OP_ALT)      if (condition || *ecode == OP_ALT)
1473        {        {
1474        if (op == OP_SCOND) md->match_function_type = MATCH_CBEGROUP;        if (op != OP_SCOND)
1475            {
1476            ecode += 1 + LINK_SIZE;
1477            goto TAIL_RECURSE;
1478            }
1479    
1480          md->match_function_type = MATCH_CBEGROUP;
1481        RMATCH(eptr, ecode + 1 + LINK_SIZE, offset_top, md, eptrb, RM49);        RMATCH(eptr, ecode + 1 + LINK_SIZE, offset_top, md, eptrb, RM49);
       if (rrc == MATCH_THEN && md->start_match_ptr == ecode)  
         rrc = MATCH_NOMATCH;  
1482        RRETURN(rrc);        RRETURN(rrc);
1483        }        }
1484      else                         /* Condition false & no alternative */  
1485         /* Condition false & no alternative; continue after the group. */
1486    
1487        else
1488        {        {
1489        ecode += 1 + LINK_SIZE;        ecode += 1 + LINK_SIZE;
1490        }        }
# Line 1334  for (;;) Line 1511  for (;;)
1511        md->offset_vector[offset+1] = (int)(eptr - md->start_subject);        md->offset_vector[offset+1] = (int)(eptr - md->start_subject);
1512        if (offset_top <= offset) offset_top = offset + 2;        if (offset_top <= offset) offset_top = offset + 2;
1513        }        }
1514      ecode += 3;      ecode += 1 + IMM2_SIZE;
1515      break;      break;
1516    
1517    
1518      /* End of the pattern, either real or forced. If we are in a recursion, we      /* End of the pattern, either real or forced. */
     should restore the offsets appropriately, and if it's a top-level  
     recursion, continue from after the call. */  
1519    
     case OP_ACCEPT:  
     case OP_ASSERT_ACCEPT:  
1520      case OP_END:      case OP_END:
1521      if (md->recursive != NULL)      case OP_ACCEPT:
1522        {      case OP_ASSERT_ACCEPT:
       recursion_info *rec = md->recursive;  
       md->recursive = rec->prevrec;  
       memmove(md->offset_vector, rec->offset_save,  
         rec->saved_max * sizeof(int));  
       offset_top = rec->save_offset_top;  
       if (rec->group_num == 0)  
         {  
         ecode = rec->after_call;  
         break;  
         }  
       }  
1523    
1524      /* Otherwise, if we have matched an empty string, fail if not in an      /* If we have matched an empty string, fail if not in an assertion and not
1525      assertion and if either PCRE_NOTEMPTY is set, or if PCRE_NOTEMPTY_ATSTART      in a recursion if either PCRE_NOTEMPTY is set, or if PCRE_NOTEMPTY_ATSTART
1526      is set and we have matched at the start of the subject. In both cases,      is set and we have matched at the start of the subject. In both cases,
1527      backtracking will then try other alternatives, if any. */      backtracking will then try other alternatives, if any. */
1528    
1529      else if (eptr == mstart && op != OP_ASSERT_ACCEPT &&      if (eptr == mstart && op != OP_ASSERT_ACCEPT &&
1530          (md->notempty ||           md->recursive == NULL &&
1531            (md->notempty_atstart &&           (md->notempty ||
1532              mstart == md->start_subject + md->start_offset)))             (md->notempty_atstart &&
1533        MRRETURN(MATCH_NOMATCH);               mstart == md->start_subject + md->start_offset)))
1534          RRETURN(MATCH_NOMATCH);
1535    
1536      /* Otherwise, we have a match. */      /* Otherwise, we have a match. */
1537    
1538      md->end_match_ptr = eptr;           /* Record where we ended */      md->end_match_ptr = eptr;           /* Record where we ended */
1539      md->end_offset_top = offset_top;    /* and how many extracts were taken */      md->end_offset_top = offset_top;    /* and how many extracts were taken */
1540      md->start_match_ptr = mstart;       /* and the start (\K can modify) */      md->start_match_ptr = mstart;       /* and the start (\K can modify) */
1541    
1542      /* 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
1543      given as the argument to MRRETURN when the heap is in use. */      given as the argument to RRETURN when the heap is in use. */
1544    
1545      rrc = (op == OP_END)? MATCH_MATCH : MATCH_ACCEPT;      rrc = (op == OP_END)? MATCH_MATCH : MATCH_ACCEPT;
1546      MRRETURN(rrc);      RRETURN(rrc);
1547    
1548      /* Assertion brackets. Check the alternative branches in turn - the      /* Assertion brackets. Check the alternative branches in turn - the
1549      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,
1550      the assertion is true. Lookbehind assertions have an OP_REVERSE item at the      the assertion is true. Lookbehind assertions have an OP_REVERSE item at the
1551      start of each branch to move the current point backwards, so the code at      start of each branch to move the current point backwards, so the code at
1552      this level is identical to the lookahead case. When the assertion is part      this level is identical to the lookahead case. When the assertion is part
1553      of a condition, we want to return immediately afterwards. The caller of      of a condition, we want to return immediately afterwards. The caller of
1554      this incarnation of the match() function will have set MATCH_CONDASSERT in      this incarnation of the match() function will have set MATCH_CONDASSERT in
1555      md->match_function type, and one of these opcodes will be the first opcode      md->match_function type, and one of these opcodes will be the first opcode
1556      that is processed. We use a local variable that is preserved over calls to      that is processed. We use a local variable that is preserved over calls to
1557      match() to remember this case. */      match() to remember this case. */
1558    
1559      case OP_ASSERT:      case OP_ASSERT:
1560      case OP_ASSERTBACK:      case OP_ASSERTBACK:
1561        save_mark = md->mark;
1562      if (md->match_function_type == MATCH_CONDASSERT)      if (md->match_function_type == MATCH_CONDASSERT)
1563        {        {
1564        condassert = TRUE;        condassert = TRUE;
1565        md->match_function_type = 0;        md->match_function_type = 0;
1566        }        }
1567      else condassert = FALSE;      else condassert = FALSE;
1568    
1569      do      do
1570        {        {
1571        RMATCH(eptr, ecode + 1 + LINK_SIZE, offset_top, md, NULL, RM4);        RMATCH(eptr, ecode + 1 + LINK_SIZE, offset_top, md, NULL, RM4);
# Line 1410  for (;;) Line 1574  for (;;)
1574          mstart = md->start_match_ptr;   /* In case \K reset it */          mstart = md->start_match_ptr;   /* In case \K reset it */
1575          break;          break;
1576          }          }
1577        if (rrc != MATCH_NOMATCH &&        md->mark = save_mark;
           (rrc != MATCH_THEN || md->start_match_ptr != ecode))  
         RRETURN(rrc);  
1578    
1579        /* See explanatory comment above under OP_CBRA. */        /* A COMMIT failure must fail the entire assertion, without trying any
1580          subsequent branches. */
1581        if (md->end_offset_top > offset_top)  
1582          {        if (rrc == MATCH_COMMIT) RRETURN(MATCH_NOMATCH);
         register int *iptr = md->offset_vector + offset_top;  
         register int *iend = md->offset_vector + md->end_offset_top;  
         while (iptr < iend) *iptr++ = -1;  
         }  
1583    
1584          /* PCRE does not allow THEN to escape beyond an assertion; it
1585          is treated as NOMATCH. */
1586    
1587          if (rrc != MATCH_NOMATCH && rrc != MATCH_THEN) RRETURN(rrc);
1588        ecode += GET(ecode, 1);        ecode += GET(ecode, 1);
1589        }        }
1590      while (*ecode == OP_ALT);      while (*ecode == OP_ALT);
1591    
1592      if (*ecode == OP_KET) MRRETURN(MATCH_NOMATCH);      if (*ecode == OP_KET) RRETURN(MATCH_NOMATCH);
1593    
1594      /* If checking an assertion for a condition, return MATCH_MATCH. */      /* If checking an assertion for a condition, return MATCH_MATCH. */
1595    
# Line 1447  for (;;) Line 1609  for (;;)
1609    
1610      case OP_ASSERT_NOT:      case OP_ASSERT_NOT:
1611      case OP_ASSERTBACK_NOT:      case OP_ASSERTBACK_NOT:
1612        save_mark = md->mark;
1613      if (md->match_function_type == MATCH_CONDASSERT)      if (md->match_function_type == MATCH_CONDASSERT)
1614        {        {
1615        condassert = TRUE;        condassert = TRUE;
1616        md->match_function_type = 0;        md->match_function_type = 0;
1617        }        }
1618      else condassert = FALSE;      else condassert = FALSE;
1619    
1620      do      do
1621        {        {
1622        RMATCH(eptr, ecode + 1 + LINK_SIZE, offset_top, md, NULL, RM5);        RMATCH(eptr, ecode + 1 + LINK_SIZE, offset_top, md, NULL, RM5);
1623        if (rrc == MATCH_MATCH || rrc == MATCH_ACCEPT) MRRETURN(MATCH_NOMATCH);        md->mark = save_mark;
1624          if (rrc == MATCH_MATCH || rrc == MATCH_ACCEPT) RRETURN(MATCH_NOMATCH);
1625        if (rrc == MATCH_SKIP || rrc == MATCH_PRUNE || rrc == MATCH_COMMIT)        if (rrc == MATCH_SKIP || rrc == MATCH_PRUNE || rrc == MATCH_COMMIT)
1626          {          {
1627          do ecode += GET(ecode,1); while (*ecode == OP_ALT);          do ecode += GET(ecode,1); while (*ecode == OP_ALT);
1628          break;          break;
1629          }          }
1630        if (rrc != MATCH_NOMATCH &&  
1631            (rrc != MATCH_THEN || md->start_match_ptr != ecode))        /* PCRE does not allow THEN to escape beyond an assertion; it is treated
1632          RRETURN(rrc);        as NOMATCH. */
1633    
1634          if (rrc != MATCH_NOMATCH && rrc != MATCH_THEN) RRETURN(rrc);
1635        ecode += GET(ecode,1);        ecode += GET(ecode,1);
1636        }        }
1637      while (*ecode == OP_ALT);      while (*ecode == OP_ALT);
1638    
1639      if (condassert) RRETURN(MATCH_MATCH);  /* Condition assertion */      if (condassert) RRETURN(MATCH_MATCH);  /* Condition assertion */
1640    
1641      ecode += 1 + LINK_SIZE;      ecode += 1 + LINK_SIZE;
1642      continue;      continue;
1643    
# Line 1481  for (;;) Line 1647  for (;;)
1647      back a number of characters, not bytes. */      back a number of characters, not bytes. */
1648    
1649      case OP_REVERSE:      case OP_REVERSE:
1650  #ifdef SUPPORT_UTF8  #ifdef SUPPORT_UTF
1651      if (utf8)      if (utf)
1652        {        {
1653        i = GET(ecode, 1);        i = GET(ecode, 1);
1654        while (i-- > 0)        while (i-- > 0)
1655          {          {
1656          eptr--;          eptr--;
1657          if (eptr < md->start_subject) MRRETURN(MATCH_NOMATCH);          if (eptr < md->start_subject) RRETURN(MATCH_NOMATCH);
1658          BACKCHAR(eptr);          BACKCHAR(eptr);
1659          }          }
1660        }        }
# Line 1499  for (;;) Line 1665  for (;;)
1665    
1666        {        {
1667        eptr -= GET(ecode, 1);        eptr -= GET(ecode, 1);
1668        if (eptr < md->start_subject) MRRETURN(MATCH_NOMATCH);        if (eptr < md->start_subject) RRETURN(MATCH_NOMATCH);
1669        }        }
1670    
1671      /* Save the earliest consulted character, then skip to next op code */      /* Save the earliest consulted character, then skip to next op code */
# Line 1513  for (;;) Line 1679  for (;;)
1679      function is able to force a failure. */      function is able to force a failure. */
1680    
1681      case OP_CALLOUT:      case OP_CALLOUT:
1682      if (pcre_callout != NULL)      if (PUBL(callout) != NULL)
1683        {        {
1684        pcre_callout_block cb;        PUBL(callout_block) cb;
1685        cb.version          = 1;   /* Version 1 of the callout block */        cb.version          = 2;   /* Version 1 of the callout block */
1686        cb.callout_number   = ecode[1];        cb.callout_number   = ecode[1];
1687        cb.offset_vector    = md->offset_vector;        cb.offset_vector    = md->offset_vector;
1688    #ifdef COMPILE_PCRE8
1689        cb.subject          = (PCRE_SPTR)md->start_subject;        cb.subject          = (PCRE_SPTR)md->start_subject;
1690    #else
1691          cb.subject          = (PCRE_SPTR16)md->start_subject;
1692    #endif
1693        cb.subject_length   = (int)(md->end_subject - md->start_subject);        cb.subject_length   = (int)(md->end_subject - md->start_subject);
1694        cb.start_match      = (int)(mstart - md->start_subject);        cb.start_match      = (int)(mstart - md->start_subject);
1695        cb.current_position = (int)(eptr - md->start_subject);        cb.current_position = (int)(eptr - md->start_subject);
# Line 1528  for (;;) Line 1698  for (;;)
1698        cb.capture_top      = offset_top/2;        cb.capture_top      = offset_top/2;
1699        cb.capture_last     = md->capture_last;        cb.capture_last     = md->capture_last;
1700        cb.callout_data     = md->callout_data;        cb.callout_data     = md->callout_data;
1701        if ((rrc = (*pcre_callout)(&cb)) > 0) MRRETURN(MATCH_NOMATCH);        cb.mark             = md->nomatch_mark;
1702          if ((rrc = (*PUBL(callout))(&cb)) > 0) RRETURN(MATCH_NOMATCH);
1703        if (rrc < 0) RRETURN(rrc);        if (rrc < 0) RRETURN(rrc);
1704        }        }
1705      ecode += 2 + 2*LINK_SIZE;      ecode += 2 + 2*LINK_SIZE;
# Line 1538  for (;;) Line 1709  for (;;)
1709      offset data is the offset to the starting bracket from the start of the      offset data is the offset to the starting bracket from the start of the
1710      whole pattern. (This is so that it works from duplicated subpatterns.)      whole pattern. (This is so that it works from duplicated subpatterns.)
1711    
1712      If there are any capturing brackets started but not finished, we have to      The state of the capturing groups is preserved over recursion, and
1713      save their starting points and reinstate them after the recursion. However,      re-instated afterwards. We don't know how many are started and not yet
1714      we don't know how many such there are (offset_top records the completed      finished (offset_top records the completed total) so we just have to save
1715      total) so we just have to save all the potential data. There may be up to      all the potential data. There may be up to 65535 such values, which is too
1716      65535 such values, which is too large to put on the stack, but using malloc      large to put on the stack, but using malloc for small numbers seems
1717      for small numbers seems expensive. As a compromise, the stack is used when      expensive. As a compromise, the stack is used when there are no more than
1718      there are no more than REC_STACK_SAVE_MAX values to store; otherwise malloc      REC_STACK_SAVE_MAX values to store; otherwise malloc is used.
     is used. A problem is what to do if the malloc fails ... there is no way of  
     returning to the top level with an error. Save the top REC_STACK_SAVE_MAX  
     values on the stack, and accept that the rest may be wrong.  
1719    
1720      There are also other values that have to be saved. We use a chained      There are also other values that have to be saved. We use a chained
1721      sequence of blocks that actually live on the stack. Thanks to Robin Houston      sequence of blocks that actually live on the stack. Thanks to Robin Houston
1722      for the original version of this logic. */      for the original version of this logic. It has, however, been hacked around
1723        a lot, so he is not to blame for the current way it works. */
1724    
1725      case OP_RECURSE:      case OP_RECURSE:
1726        {        {
1727          recursion_info *ri;
1728          int recno;
1729    
1730        callpat = md->start_code + GET(ecode, 1);        callpat = md->start_code + GET(ecode, 1);
1731        new_recursive.group_num = (callpat == md->start_code)? 0 :        recno = (callpat == md->start_code)? 0 :
1732          GET2(callpat, 1 + LINK_SIZE);          GET2(callpat, 1 + LINK_SIZE);
1733    
1734          /* Check for repeating a recursion without advancing the subject pointer.
1735          This should catch convoluted mutual recursions. (Some simple cases are
1736          caught at compile time.) */
1737    
1738          for (ri = md->recursive; ri != NULL; ri = ri->prevrec)
1739            if (recno == ri->group_num && eptr == ri->subject_position)
1740              RRETURN(PCRE_ERROR_RECURSELOOP);
1741    
1742        /* Add to "recursing stack" */        /* Add to "recursing stack" */
1743    
1744          new_recursive.group_num = recno;
1745          new_recursive.subject_position = eptr;
1746        new_recursive.prevrec = md->recursive;        new_recursive.prevrec = md->recursive;
1747        md->recursive = &new_recursive;        md->recursive = &new_recursive;
1748    
1749        /* Find where to continue from afterwards */        /* Where to continue from afterwards */
1750    
1751        ecode += 1 + LINK_SIZE;        ecode += 1 + LINK_SIZE;
       new_recursive.after_call = ecode;  
1752    
1753        /* Now save the offset data. */        /* Now save the offset data */
1754    
1755        new_recursive.saved_max = md->offset_end;        new_recursive.saved_max = md->offset_end;
1756        if (new_recursive.saved_max <= REC_STACK_SAVE_MAX)        if (new_recursive.saved_max <= REC_STACK_SAVE_MAX)
# Line 1577  for (;;) Line 1758  for (;;)
1758        else        else
1759          {          {
1760          new_recursive.offset_save =          new_recursive.offset_save =
1761            (int *)(pcre_malloc)(new_recursive.saved_max * sizeof(int));            (int *)(PUBL(malloc))(new_recursive.saved_max * sizeof(int));
1762          if (new_recursive.offset_save == NULL) RRETURN(PCRE_ERROR_NOMEMORY);          if (new_recursive.offset_save == NULL) RRETURN(PCRE_ERROR_NOMEMORY);
1763          }          }
   
1764        memcpy(new_recursive.offset_save, md->offset_vector,        memcpy(new_recursive.offset_save, md->offset_vector,
1765              new_recursive.saved_max * sizeof(int));              new_recursive.saved_max * sizeof(int));
1766        new_recursive.save_offset_top = offset_top;  
1767          /* OK, now we can do the recursion. After processing each alternative,
1768        /* OK, now we can do the recursion. For each top-level alternative we        restore the offset data. If there were nested recursions, md->recursive
1769        restore the offset and recursion data. */        might be changed, so reset it before looping. */
1770    
1771        DPRINTF(("Recursing into group %d\n", new_recursive.group_num));        DPRINTF(("Recursing into group %d\n", new_recursive.group_num));
1772        cbegroup = (*callpat >= OP_SBRA);        cbegroup = (*callpat >= OP_SBRA);
1773        do        do
1774          {          {
1775          if (cbegroup) md->match_function_type = MATCH_CBEGROUP;          if (cbegroup) md->match_function_type = MATCH_CBEGROUP;
1776          RMATCH(eptr, callpat + _pcre_OP_lengths[*callpat], offset_top,          RMATCH(eptr, callpat + PRIV(OP_lengths)[*callpat], offset_top,
1777            md, eptrb, RM6);            md, eptrb, RM6);
1778            memcpy(md->offset_vector, new_recursive.offset_save,
1779                new_recursive.saved_max * sizeof(int));
1780            md->recursive = new_recursive.prevrec;
1781          if (rrc == MATCH_MATCH || rrc == MATCH_ACCEPT)          if (rrc == MATCH_MATCH || rrc == MATCH_ACCEPT)
1782            {            {
1783            DPRINTF(("Recursion matched\n"));            DPRINTF(("Recursion matched\n"));
           md->recursive = new_recursive.prevrec;  
1784            if (new_recursive.offset_save != stacksave)            if (new_recursive.offset_save != stacksave)
1785              (pcre_free)(new_recursive.offset_save);              (PUBL(free))(new_recursive.offset_save);
1786            MRRETURN(MATCH_MATCH);  
1787              /* Set where we got to in the subject, and reset the start in case
1788              it was changed by \K. This *is* propagated back out of a recursion,
1789              for Perl compatibility. */
1790    
1791              eptr = md->end_match_ptr;
1792              mstart = md->start_match_ptr;
1793              goto RECURSION_MATCHED;        /* Exit loop; end processing */
1794            }            }
1795          else if (rrc != MATCH_NOMATCH &&  
1796                  (rrc != MATCH_THEN || md->start_match_ptr != ecode))          /* PCRE does not allow THEN or COMMIT to escape beyond a recursion; it
1797            is treated as NOMATCH. */
1798    
1799            else if (rrc != MATCH_NOMATCH && rrc != MATCH_THEN &&
1800                     rrc != MATCH_COMMIT)
1801            {            {
1802            DPRINTF(("Recursion gave error %d\n", rrc));            DPRINTF(("Recursion gave error %d\n", rrc));
1803            if (new_recursive.offset_save != stacksave)            if (new_recursive.offset_save != stacksave)
1804              (pcre_free)(new_recursive.offset_save);              (PUBL(free))(new_recursive.offset_save);
1805            RRETURN(rrc);            RRETURN(rrc);
1806            }            }
1807    
1808          md->recursive = &new_recursive;          md->recursive = &new_recursive;
         memcpy(md->offset_vector, new_recursive.offset_save,  
             new_recursive.saved_max * sizeof(int));  
1809          callpat += GET(callpat, 1);          callpat += GET(callpat, 1);
1810          }          }
1811        while (*callpat == OP_ALT);        while (*callpat == OP_ALT);
# Line 1622  for (;;) Line 1813  for (;;)
1813        DPRINTF(("Recursion didn't match\n"));        DPRINTF(("Recursion didn't match\n"));
1814        md->recursive = new_recursive.prevrec;        md->recursive = new_recursive.prevrec;
1815        if (new_recursive.offset_save != stacksave)        if (new_recursive.offset_save != stacksave)
1816          (pcre_free)(new_recursive.offset_save);          (PUBL(free))(new_recursive.offset_save);
1817        MRRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
       }  
     /* Control never reaches here */  
   
     /* "Once" brackets are like assertion brackets except that after a match,  
     the point in the subject string is not moved back. Thus there can never be  
     a move back into the brackets. Friedl calls these "atomic" subpatterns.  
     Check the alternative branches in turn - the matching won't pass the KET  
     for this kind of subpattern. If any one branch matches, we carry on as at  
     the end of a normal bracket, leaving the subject pointer, but resetting  
     the start-of-match value in case it was changed by \K. */  
   
     case OP_ONCE:  
     prev = ecode;  
     saved_eptr = eptr;  
   
     do  
       {  
       RMATCH(eptr, ecode + 1 + LINK_SIZE, offset_top, md, eptrb, RM7);  
       if (rrc == MATCH_MATCH)  /* Note: _not_ MATCH_ACCEPT */  
         {  
         mstart = md->start_match_ptr;  
         break;  
         }  
       if (rrc != MATCH_NOMATCH &&  
           (rrc != MATCH_THEN || md->start_match_ptr != ecode))  
         RRETURN(rrc);  
   
       /* See explanatory comment above under OP_CBRA. */  
   
       if (md->end_offset_top > offset_top)  
         {  
         register int *iptr = md->offset_vector + offset_top;  
         register int *iend = md->offset_vector + md->end_offset_top;  
         while (iptr < iend) *iptr++ = -1;  
         }  
   
       ecode += GET(ecode,1);  
       }  
     while (*ecode == OP_ALT);  
   
     /* If hit the end of the group (which could be repeated), fail */  
   
     if (*ecode != OP_ONCE && *ecode != OP_ALT) RRETURN(MATCH_NOMATCH);  
   
     /* Continue after the group, updating the offsets high water mark, since  
     extracts may have been taken. */  
   
     do ecode += GET(ecode, 1); while (*ecode == OP_ALT);  
   
     offset_top = md->end_offset_top;  
     eptr = md->end_match_ptr;  
   
     /* For a non-repeating ket, just continue at this level. This also  
     happens for a repeating ket if no characters were matched in the group.  
     This is the forcible breaking of infinite loops as implemented in Perl  
     5.005. If there is an options reset, it will get obeyed in the normal  
     course of events. */  
   
     if (*ecode == OP_KET || eptr == saved_eptr)  
       {  
       ecode += 1+LINK_SIZE;  
       break;  
1818        }        }
1819    
1820      /* The repeating kets try the rest of the pattern or restart from the      RECURSION_MATCHED:
1821      preceding bracket, in the appropriate order. The second "call" of match()      break;
     uses tail recursion, to avoid using another stack frame. */  
   
     if (*ecode == OP_KETRMIN)  
       {  
       RMATCH(eptr, ecode + 1 + LINK_SIZE, offset_top, md, eptrb, RM8);  
       if (rrc != MATCH_NOMATCH) RRETURN(rrc);  
       ecode = prev;  
       goto TAIL_RECURSE;  
       }  
     else  /* OP_KETRMAX */  
       {  
       md->match_function_type = MATCH_CBEGROUP;  
       RMATCH(eptr, prev, offset_top, md, eptrb, RM9);  
       if (rrc != MATCH_NOMATCH) RRETURN(rrc);  
       ecode += 1 + LINK_SIZE;  
       goto TAIL_RECURSE;  
       }  
     /* Control never gets here */  
1822    
1823      /* An alternation is the end of a branch; scan along to find the end of the      /* An alternation is the end of a branch; scan along to find the end of the
1824      bracketed group and go to there. */      bracketed group and go to there. */
# Line 1721  for (;;) Line 1832  for (;;)
1832      at all - i.e. it could be ()* or ()? or even (){0} in the pattern. Brackets      at all - i.e. it could be ()* or ()? or even (){0} in the pattern. Brackets
1833      with fixed upper repeat limits are compiled as a number of copies, with the      with fixed upper repeat limits are compiled as a number of copies, with the
1834      optional ones preceded by BRAZERO or BRAMINZERO. */      optional ones preceded by BRAZERO or BRAMINZERO. */
1835    
1836      case OP_BRAZERO:      case OP_BRAZERO:
1837      next = ecode + 1;      next = ecode + 1;
1838      RMATCH(eptr, next, offset_top, md, eptrb, RM10);      RMATCH(eptr, next, offset_top, md, eptrb, RM10);
# Line 1729  for (;;) Line 1840  for (;;)
1840      do next += GET(next, 1); while (*next == OP_ALT);      do next += GET(next, 1); while (*next == OP_ALT);
1841      ecode = next + 1 + LINK_SIZE;      ecode = next + 1 + LINK_SIZE;
1842      break;      break;
1843    
1844      case OP_BRAMINZERO:      case OP_BRAMINZERO:
1845      next = ecode + 1;      next = ecode + 1;
1846      do next += GET(next, 1); while (*next == OP_ALT);      do next += GET(next, 1); while (*next == OP_ALT);
# Line 1743  for (;;) Line 1854  for (;;)
1854      do next += GET(next,1); while (*next == OP_ALT);      do next += GET(next,1); while (*next == OP_ALT);
1855      ecode = next + 1 + LINK_SIZE;      ecode = next + 1 + LINK_SIZE;
1856      break;      break;
1857    
1858      /* BRAPOSZERO occurs before a possessive bracket group. Don't do anything      /* BRAPOSZERO occurs before a possessive bracket group. Don't do anything
1859      here; just jump to the group, with allow_zero set TRUE. */      here; just jump to the group, with allow_zero set TRUE. */
1860    
1861      case OP_BRAPOSZERO:      case OP_BRAPOSZERO:
1862      op = *(++ecode);      op = *(++ecode);
1863      allow_zero = TRUE;      allow_zero = TRUE;
1864      if (op == OP_CBRAPOS || op == OP_SCBRAPOS) goto POSSESSIVE_CAPTURE;      if (op == OP_CBRAPOS || op == OP_SCBRAPOS) goto POSSESSIVE_CAPTURE;
1865        goto POSSESSIVE_NON_CAPTURE;        goto POSSESSIVE_NON_CAPTURE;
# Line 1758  for (;;) Line 1869  for (;;)
1869      case OP_KET:      case OP_KET:
1870      case OP_KETRMIN:      case OP_KETRMIN:
1871      case OP_KETRMAX:      case OP_KETRMAX:
1872      case OP_KETRPOS:      case OP_KETRPOS:
1873      prev = ecode - GET(ecode, 1);      prev = ecode - GET(ecode, 1);
1874    
1875      /* If this was a group that remembered the subject start, in order to break      /* If this was a group that remembered the subject start, in order to break
1876      infinite repeats of empty string matches, retrieve the subject start from      infinite repeats of empty string matches, retrieve the subject start from
1877      the chain. Otherwise, set it NULL. */      the chain. Otherwise, set it NULL. */
1878    
1879      if (*prev >= OP_SBRA)      if (*prev >= OP_SBRA || *prev == OP_ONCE)
1880        {        {
1881        saved_eptr = eptrb->epb_saved_eptr;   /* Value at start of group */        saved_eptr = eptrb->epb_saved_eptr;   /* Value at start of group */
1882        eptrb = eptrb->epb_prev;              /* Backup to previous group */        eptrb = eptrb->epb_prev;              /* Backup to previous group */
1883        }        }
1884      else saved_eptr = NULL;      else saved_eptr = NULL;
1885    
1886      /* If we are at the end of an assertion group or an atomic group, stop      /* If we are at the end of an assertion group or a non-capturing atomic
1887      matching and return MATCH_MATCH, but record the current high water mark for      group, stop matching and return MATCH_MATCH, but record the current high
1888      use by positive assertions. We also need to record the match start in case      water mark for use by positive assertions. We also need to record the match
1889      it was changed by \K. */      start in case it was changed by \K. */
1890    
1891      if (*prev == OP_ASSERT || *prev == OP_ASSERT_NOT ||      if ((*prev >= OP_ASSERT && *prev <= OP_ASSERTBACK_NOT) ||
1892          *prev == OP_ASSERTBACK || *prev == OP_ASSERTBACK_NOT ||           *prev == OP_ONCE_NC)
         *prev == OP_ONCE)  
1893        {        {
1894        md->end_match_ptr = eptr;      /* For ONCE */        md->end_match_ptr = eptr;      /* For ONCE_NC */
1895        md->end_offset_top = offset_top;        md->end_offset_top = offset_top;
1896        md->start_match_ptr = mstart;        md->start_match_ptr = mstart;
1897        MRRETURN(MATCH_MATCH);        RRETURN(MATCH_MATCH);         /* Sets md->mark */
1898        }        }
1899    
1900      /* 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
1901      and if necessary complete handling an extraction by setting the offsets and      and if necessary complete handling an extraction by setting the offsets and
1902      bumping the high water mark. Note that whole-pattern recursion is coded as      bumping the high water mark. Whole-pattern recursion is coded as a recurse
1903      a recurse into group 0, so it won't be picked up here. Instead, we catch it      into group 0, so it won't be picked up here. Instead, we catch it when the
1904      when the OP_END is reached. Other recursion is handled here. */      OP_END is reached. Other recursion is handled here. We just have to record
1905        the current subject position and start match pointer and give a MATCH
1906        return. */
1907    
1908      if (*prev == OP_CBRA || *prev == OP_SCBRA ||      if (*prev == OP_CBRA || *prev == OP_SCBRA ||
1909          *prev == OP_CBRAPOS || *prev == OP_SCBRAPOS)          *prev == OP_CBRAPOS || *prev == OP_SCBRAPOS)
# Line 1804  for (;;) Line 1916  for (;;)
1916        printf("\n");        printf("\n");
1917  #endif  #endif
1918    
1919          /* Handle a recursively called group. */
1920    
1921          if (md->recursive != NULL && md->recursive->group_num == number)
1922            {
1923            md->end_match_ptr = eptr;
1924            md->start_match_ptr = mstart;
1925            RRETURN(MATCH_MATCH);
1926            }
1927    
1928          /* Deal with capturing */
1929    
1930        md->capture_last = number;        md->capture_last = number;
1931        if (offset >= md->offset_max) md->offset_overflow = TRUE; else        if (offset >= md->offset_max) md->offset_overflow = TRUE; else
1932          {          {
1933            /* If offset is greater than offset_top, it means that we are
1934            "skipping" a capturing group, and that group's offsets must be marked
1935            unset. In earlier versions of PCRE, all the offsets were unset at the
1936            start of matching, but this doesn't work because atomic groups and
1937            assertions can cause a value to be set that should later be unset.
1938            Example: matching /(?>(a))b|(a)c/ against "ac". This sets group 1 as
1939            part of the atomic group, but this is not on the final matching path,
1940            so must be unset when 2 is set. (If there is no group 2, there is no
1941            problem, because offset_top will then be 2, indicating no capture.) */
1942    
1943            if (offset > offset_top)
1944              {
1945              register int *iptr = md->offset_vector + offset_top;
1946              register int *iend = md->offset_vector + offset;
1947              while (iptr < iend) *iptr++ = -1;
1948              }
1949    
1950            /* Now make the extraction */
1951    
1952          md->offset_vector[offset] =          md->offset_vector[offset] =
1953            md->offset_vector[md->offset_end - number];            md->offset_vector[md->offset_end - number];
1954          md->offset_vector[offset+1] = (int)(eptr - md->start_subject);          md->offset_vector[offset+1] = (int)(eptr - md->start_subject);
1955          if (offset_top <= offset) offset_top = offset + 2;          if (offset_top <= offset) offset_top = offset + 2;
1956          }          }
   
       /* Handle a recursively called group. Restore the offsets  
       appropriately and continue from after the call. */  
   
       if (md->recursive != NULL && md->recursive->group_num == number)  
         {  
         recursion_info *rec = md->recursive;  
         DPRINTF(("Recursion (%d) succeeded - continuing\n", number));  
         md->recursive = rec->prevrec;  
         memcpy(md->offset_vector, rec->offset_save,  
           rec->saved_max * sizeof(int));  
         offset_top = rec->save_offset_top;  
         ecode = rec->after_call;  
         break;  
         }  
1957        }        }
1958    
1959      /* For a non-repeating ket, just continue at this level. This also      /* For an ordinary non-repeating ket, just continue at this level. This
1960      happens for a repeating ket if no characters were matched in the group.      also happens for a repeating ket if no characters were matched in the
1961      This is the forcible breaking of infinite loops as implemented in Perl      group. This is the forcible breaking of infinite loops as implemented in
1962      5.005. If there is an options reset, it will get obeyed in the normal      Perl 5.005. For a non-repeating atomic group that includes captures,
1963      course of events. */      establish a backup point by processing the rest of the pattern at a lower
1964        level. If this results in a NOMATCH return, pass MATCH_ONCE back to the
1965        original OP_ONCE level, thereby bypassing intermediate backup points, but
1966        resetting any captures that happened along the way. */
1967    
1968      if (*ecode == OP_KET || eptr == saved_eptr)      if (*ecode == OP_KET || eptr == saved_eptr)
1969        {        {
1970        ecode += 1 + LINK_SIZE;        if (*prev == OP_ONCE)
1971            {
1972            RMATCH(eptr, ecode + 1 + LINK_SIZE, offset_top, md, eptrb, RM12);
1973            if (rrc != MATCH_NOMATCH) RRETURN(rrc);
1974            md->once_target = prev;  /* Level at which to change to MATCH_NOMATCH */
1975            RRETURN(MATCH_ONCE);
1976            }
1977          ecode += 1 + LINK_SIZE;    /* Carry on at this level */
1978        break;        break;
1979        }        }
1980    
1981      /* OP_KETRPOS is a possessive repeating ket. Remember the current position,      /* OP_KETRPOS is a possessive repeating ket. Remember the current position,
1982      and return the MATCH_KETRPOS. This makes it possible to do the repeats one      and return the MATCH_KETRPOS. This makes it possible to do the repeats one
1983      at a time from the outer level, thus saving stack. */      at a time from the outer level, thus saving stack. */
1984    
1985      if (*ecode == OP_KETRPOS)      if (*ecode == OP_KETRPOS)
1986        {        {
1987        md->end_match_ptr = eptr;        md->end_match_ptr = eptr;
1988        md->end_offset_top = offset_top;        md->end_offset_top = offset_top;
1989        RRETURN(MATCH_KETRPOS);        RRETURN(MATCH_KETRPOS);
1990        }        }
1991    
1992      /* The normal repeating kets try the rest of the pattern or restart from      /* The normal repeating kets try the rest of the pattern or restart from
1993      the preceding bracket, in the appropriate order. In the second case, we can      the preceding bracket, in the appropriate order. In the second case, we can
1994      use tail recursion to avoid using another stack frame, unless we have an      use tail recursion to avoid using another stack frame, unless we have an
1995      unlimited repeat of a group that can match an empty string. */      an atomic group or an unlimited repeat of a group that can match an empty
1996        string. */
1997    
1998      if (*ecode == OP_KETRMIN)      if (*ecode == OP_KETRMIN)
1999        {        {
2000        RMATCH(eptr, ecode + 1 + LINK_SIZE, offset_top, md, eptrb, RM12);        RMATCH(eptr, ecode + 1 + LINK_SIZE, offset_top, md, eptrb, RM7);
2001        if (rrc != MATCH_NOMATCH) RRETURN(rrc);        if (rrc != MATCH_NOMATCH) RRETURN(rrc);
2002          if (*prev == OP_ONCE)
2003            {
2004            RMATCH(eptr, prev, offset_top, md, eptrb, RM8);
2005            if (rrc != MATCH_NOMATCH) RRETURN(rrc);
2006            md->once_target = prev;  /* Level at which to change to MATCH_NOMATCH */
2007            RRETURN(MATCH_ONCE);
2008            }
2009        if (*prev >= OP_SBRA)    /* Could match an empty string */        if (*prev >= OP_SBRA)    /* Could match an empty string */
2010          {          {
         md->match_function_type = MATCH_CBEGROUP;  
2011          RMATCH(eptr, prev, offset_top, md, eptrb, RM50);          RMATCH(eptr, prev, offset_top, md, eptrb, RM50);
2012          RRETURN(rrc);          RRETURN(rrc);
2013          }          }
# Line 1872  for (;;) Line 2016  for (;;)
2016        }        }
2017      else  /* OP_KETRMAX */      else  /* OP_KETRMAX */
2018        {        {
       if (*prev >= OP_SBRA) md->match_function_type = MATCH_CBEGROUP;  
2019        RMATCH(eptr, prev, offset_top, md, eptrb, RM13);        RMATCH(eptr, prev, offset_top, md, eptrb, RM13);
2020          if (rrc == MATCH_ONCE && md->once_target == prev) rrc = MATCH_NOMATCH;
2021        if (rrc != MATCH_NOMATCH) RRETURN(rrc);        if (rrc != MATCH_NOMATCH) RRETURN(rrc);
2022          if (*prev == OP_ONCE)
2023            {
2024            RMATCH(eptr, ecode + 1 + LINK_SIZE, offset_top, md, eptrb, RM9);
2025            if (rrc != MATCH_NOMATCH) RRETURN(rrc);
2026            md->once_target = prev;
2027            RRETURN(MATCH_ONCE);
2028            }
2029        ecode += 1 + LINK_SIZE;        ecode += 1 + LINK_SIZE;
2030        goto TAIL_RECURSE;        goto TAIL_RECURSE;
2031        }        }
# Line 1883  for (;;) Line 2034  for (;;)
2034      /* Not multiline mode: start of subject assertion, unless notbol. */      /* Not multiline mode: start of subject assertion, unless notbol. */
2035    
2036      case OP_CIRC:      case OP_CIRC:
2037      if (md->notbol && eptr == md->start_subject) MRRETURN(MATCH_NOMATCH);      if (md->notbol && eptr == md->start_subject) RRETURN(MATCH_NOMATCH);
2038    
2039      /* Start of subject assertion */      /* Start of subject assertion */
2040    
2041      case OP_SOD:      case OP_SOD:
2042      if (eptr != md->start_subject) MRRETURN(MATCH_NOMATCH);      if (eptr != md->start_subject) RRETURN(MATCH_NOMATCH);
2043      ecode++;      ecode++;
2044      break;      break;
2045    
2046      /* Multiline mode: start of subject unless notbol, or after any newline. */      /* Multiline mode: start of subject unless notbol, or after any newline. */
2047    
2048      case OP_CIRCM:      case OP_CIRCM:
2049      if (md->notbol && eptr == md->start_subject) MRRETURN(MATCH_NOMATCH);      if (md->notbol && eptr == md->start_subject) RRETURN(MATCH_NOMATCH);
2050      if (eptr != md->start_subject &&      if (eptr != md->start_subject &&
2051          (eptr == md->end_subject || !WAS_NEWLINE(eptr)))          (eptr == md->end_subject || !WAS_NEWLINE(eptr)))
2052        MRRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
2053      ecode++;      ecode++;
2054      break;      break;
2055    
2056      /* Start of match assertion */      /* Start of match assertion */
2057    
2058      case OP_SOM:      case OP_SOM:
2059      if (eptr != md->start_subject + md->start_offset) MRRETURN(MATCH_NOMATCH);      if (eptr != md->start_subject + md->start_offset) RRETURN(MATCH_NOMATCH);
2060      ecode++;      ecode++;
2061      break;      break;
2062    
# Line 1921  for (;;) Line 2072  for (;;)
2072    
2073      case OP_DOLLM:      case OP_DOLLM:
2074      if (eptr < md->end_subject)      if (eptr < md->end_subject)
2075        { if (!IS_NEWLINE(eptr)) MRRETURN(MATCH_NOMATCH); }        {
2076          if (!IS_NEWLINE(eptr))
2077            {
2078            if (md->partial != 0 &&
2079                eptr + 1 >= md->end_subject &&
2080                NLBLOCK->nltype == NLTYPE_FIXED &&
2081                NLBLOCK->nllen == 2 &&
2082                *eptr == NLBLOCK->nl[0])
2083              {
2084              md->hitend = TRUE;
2085              if (md->partial > 1) RRETURN(PCRE_ERROR_PARTIAL);
2086              }
2087            RRETURN(MATCH_NOMATCH);
2088            }
2089          }
2090      else      else
2091        {        {
2092        if (md->noteol) MRRETURN(MATCH_NOMATCH);        if (md->noteol) RRETURN(MATCH_NOMATCH);
2093        SCHECK_PARTIAL();        SCHECK_PARTIAL();
2094        }        }
2095      ecode++;      ecode++;
2096      break;      break;
2097    
2098      /* Not multiline mode: assert before a terminating newline or before end of      /* Not multiline mode: assert before a terminating newline or before end of
2099      subject unless noteol is set. */      subject unless noteol is set. */
2100    
2101      case OP_DOLL:      case OP_DOLL:
2102      if (md->noteol) MRRETURN(MATCH_NOMATCH);      if (md->noteol) RRETURN(MATCH_NOMATCH);
2103      if (!md->endonly) goto ASSERT_NL_OR_EOS;      if (!md->endonly) goto ASSERT_NL_OR_EOS;
2104    
2105      /* ... else fall through for endonly */      /* ... else fall through for endonly */
# Line 1942  for (;;) Line 2107  for (;;)
2107      /* End of subject assertion (\z) */      /* End of subject assertion (\z) */
2108    
2109      case OP_EOD:      case OP_EOD:
2110      if (eptr < md->end_subject) MRRETURN(MATCH_NOMATCH);      if (eptr < md->end_subject) RRETURN(MATCH_NOMATCH);
2111      SCHECK_PARTIAL();      SCHECK_PARTIAL();
2112      ecode++;      ecode++;
2113      break;      break;
# Line 1953  for (;;) Line 2118  for (;;)
2118      ASSERT_NL_OR_EOS:      ASSERT_NL_OR_EOS:
2119      if (eptr < md->end_subject &&      if (eptr < md->end_subject &&
2120          (!IS_NEWLINE(eptr) || eptr != md->end_subject - md->nllen))          (!IS_NEWLINE(eptr) || eptr != md->end_subject - md->nllen))
2121        MRRETURN(MATCH_NOMATCH);        {
2122          if (md->partial != 0 &&
2123              eptr + 1 >= md->end_subject &&
2124              NLBLOCK->nltype == NLTYPE_FIXED &&
2125              NLBLOCK->nllen == 2 &&
2126              *eptr == NLBLOCK->nl[0])
2127            {
2128            md->hitend = TRUE;
2129            if (md->partial > 1) RRETURN(PCRE_ERROR_PARTIAL);
2130            }
2131          RRETURN(MATCH_NOMATCH);
2132          }
2133    
2134      /* Either at end of string or \n before end. */      /* Either at end of string or \n before end. */
2135    
# Line 1972  for (;;) Line 2148  for (;;)
2148        be "non-word" characters. Remember the earliest consulted character for        be "non-word" characters. Remember the earliest consulted character for
2149        partial matching. */        partial matching. */
2150    
2151  #ifdef SUPPORT_UTF8  #ifdef SUPPORT_UTF
2152        if (utf8)        if (utf)
2153          {          {
2154          /* Get status of previous character */          /* Get status of previous character */
2155    
2156          if (eptr == md->start_subject) prev_is_word = FALSE; else          if (eptr == md->start_subject) prev_is_word = FALSE; else
2157            {            {
2158            USPTR lastptr = eptr - 1;            PCRE_PUCHAR lastptr = eptr - 1;
2159            while((*lastptr & 0xc0) == 0x80) lastptr--;            BACKCHAR(lastptr);
2160            if (lastptr < md->start_used_ptr) md->start_used_ptr = lastptr;            if (lastptr < md->start_used_ptr) md->start_used_ptr = lastptr;
2161            GETCHAR(c, lastptr);            GETCHAR(c, lastptr);
2162  #ifdef SUPPORT_UCP  #ifdef SUPPORT_UCP
# Line 2045  for (;;) Line 2221  for (;;)
2221              }              }
2222            else            else
2223  #endif  #endif
2224            prev_is_word = ((md->ctypes[eptr[-1]] & ctype_word) != 0);            prev_is_word = MAX_255(eptr[-1])
2225                && ((md->ctypes[eptr[-1]] & ctype_word) != 0);
2226            }            }
2227    
2228          /* Get status of next character */          /* Get status of next character */
# Line 2068  for (;;) Line 2245  for (;;)
2245            }            }
2246          else          else
2247  #endif  #endif
2248          cur_is_word = ((md->ctypes[*eptr] & ctype_word) != 0);          cur_is_word = MAX_255(*eptr)
2249              && ((md->ctypes[*eptr] & ctype_word) != 0);
2250          }          }
2251    
2252        /* Now see if the situation is what we want */        /* Now see if the situation is what we want */
2253    
2254        if ((*ecode++ == OP_WORD_BOUNDARY)?        if ((*ecode++ == OP_WORD_BOUNDARY)?
2255             cur_is_word == prev_is_word : cur_is_word != prev_is_word)             cur_is_word == prev_is_word : cur_is_word != prev_is_word)
2256          MRRETURN(MATCH_NOMATCH);          RRETURN(MATCH_NOMATCH);
2257        }        }
2258      break;      break;
2259    
2260      /* Match a single character type; inline for speed */      /* Match any single character type except newline; have to take care with
2261        CRLF newlines and partial matching. */
2262    
2263      case OP_ANY:      case OP_ANY:
2264      if (IS_NEWLINE(eptr)) MRRETURN(MATCH_NOMATCH);      if (IS_NEWLINE(eptr)) RRETURN(MATCH_NOMATCH);
2265        if (md->partial != 0 &&
2266            eptr + 1 >= md->end_subject &&
2267            NLBLOCK->nltype == NLTYPE_FIXED &&
2268            NLBLOCK->nllen == 2 &&
2269            *eptr == NLBLOCK->nl[0])
2270          {
2271          md->hitend = TRUE;
2272          if (md->partial > 1) RRETURN(PCRE_ERROR_PARTIAL);
2273          }
2274    
2275      /* Fall through */      /* Fall through */
2276    
2277        /* Match any single character whatsoever. */
2278    
2279      case OP_ALLANY:      case OP_ALLANY:
2280      if (eptr++ >= md->end_subject)      if (eptr >= md->end_subject)   /* DO NOT merge the eptr++ here; it must */
2281        {        {                            /* not be updated before SCHECK_PARTIAL. */
2282        SCHECK_PARTIAL();        SCHECK_PARTIAL();
2283        MRRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
2284        }        }
2285      if (utf8) while (eptr < md->end_subject && (*eptr & 0xc0) == 0x80) eptr++;      eptr++;
2286    #ifdef SUPPORT_UTF
2287        if (utf) ACROSSCHAR(eptr < md->end_subject, *eptr, eptr++);
2288    #endif
2289      ecode++;      ecode++;
2290      break;      break;
2291    
# Line 2099  for (;;) Line 2293  for (;;)
2293      any byte, even newline, independent of the setting of PCRE_DOTALL. */      any byte, even newline, independent of the setting of PCRE_DOTALL. */
2294    
2295      case OP_ANYBYTE:      case OP_ANYBYTE:
2296      if (eptr++ >= md->end_subject)      if (eptr >= md->end_subject)   /* DO NOT merge the eptr++ here; it must */
2297        {        {                            /* not be updated before SCHECK_PARTIAL. */
2298        SCHECK_PARTIAL();        SCHECK_PARTIAL();
2299        MRRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
2300        }        }
2301        eptr++;
2302      ecode++;      ecode++;
2303      break;      break;
2304    
# Line 2111  for (;;) Line 2306  for (;;)
2306      if (eptr >= md->end_subject)      if (eptr >= md->end_subject)
2307        {        {
2308        SCHECK_PARTIAL();        SCHECK_PARTIAL();
2309        MRRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
2310        }        }
2311      GETCHARINCTEST(c, eptr);      GETCHARINCTEST(c, eptr);
2312      if (      if (
2313  #ifdef SUPPORT_UTF8  #if defined SUPPORT_UTF || !(defined COMPILE_PCRE8)
2314         c < 256 &&         c < 256 &&
2315  #endif  #endif
2316         (md->ctypes[c] & ctype_digit) != 0         (md->ctypes[c] & ctype_digit) != 0
2317         )         )
2318        MRRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
2319      ecode++;      ecode++;
2320      break;      break;
2321    
# Line 2128  for (;;) Line 2323  for (;;)
2323      if (eptr >= md->end_subject)      if (eptr >= md->end_subject)
2324        {        {
2325        SCHECK_PARTIAL();        SCHECK_PARTIAL();
2326        MRRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
2327        }        }
2328      GETCHARINCTEST(c, eptr);      GETCHARINCTEST(c, eptr);
2329      if (      if (
2330  #ifdef SUPPORT_UTF8  #if defined SUPPORT_UTF || !(defined COMPILE_PCRE8)
2331         c >= 256 ||         c > 255 ||
2332  #endif  #endif
2333         (md->ctypes[c] & ctype_digit) == 0         (md->ctypes[c] & ctype_digit) == 0
2334         )         )
2335        MRRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
2336      ecode++;      ecode++;
2337      break;      break;
2338    
# Line 2145  for (;;) Line 2340  for (;;)
2340      if (eptr >= md->end_subject)      if (eptr >= md->end_subject)
2341        {        {
2342        SCHECK_PARTIAL();        SCHECK_PARTIAL();
2343        MRRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
2344        }        }
2345      GETCHARINCTEST(c, eptr);      GETCHARINCTEST(c, eptr);
2346      if (      if (
2347  #ifdef SUPPORT_UTF8  #if defined SUPPORT_UTF || !(defined COMPILE_PCRE8)
2348         c < 256 &&         c < 256 &&
2349  #endif  #endif
2350         (md->ctypes[c] & ctype_space) != 0         (md->ctypes[c] & ctype_space) != 0
2351         )         )
2352        MRRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
2353      ecode++;      ecode++;
2354      break;      break;
2355    
# Line 2162  for (;;) Line 2357  for (;;)
2357      if (eptr >= md->end_subject)      if (eptr >= md->end_subject)
2358        {        {
2359        SCHECK_PARTIAL();        SCHECK_PARTIAL();
2360        MRRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
2361        }        }
2362      GETCHARINCTEST(c, eptr);      GETCHARINCTEST(c, eptr);
2363      if (      if (
2364  #ifdef SUPPORT_UTF8  #if defined SUPPORT_UTF || !(defined COMPILE_PCRE8)
2365         c >= 256 ||         c > 255 ||
2366  #endif  #endif
2367         (md->ctypes[c] & ctype_space) == 0         (md->ctypes[c] & ctype_space) == 0
2368         )         )
2369        MRRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
2370      ecode++;      ecode++;
2371      break;      break;
2372    
# Line 2179  for (;;) Line 2374  for (;;)
2374      if (eptr >= md->end_subject)      if (eptr >= md->end_subject)
2375        {        {
2376        SCHECK_PARTIAL();        SCHECK_PARTIAL();
2377        MRRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
2378        }        }
2379      GETCHARINCTEST(c, eptr);      GETCHARINCTEST(c, eptr);
2380      if (      if (
2381  #ifdef SUPPORT_UTF8  #if defined SUPPORT_UTF || !(defined COMPILE_PCRE8)
2382         c < 256 &&         c < 256 &&
2383  #endif  #endif
2384         (md->ctypes[c] & ctype_word) != 0         (md->ctypes[c] & ctype_word) != 0
2385         )         )
2386        MRRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
2387      ecode++;      ecode++;
2388      break;      break;
2389    
# Line 2196  for (;;) Line 2391  for (;;)
2391      if (eptr >= md->end_subject)      if (eptr >= md->end_subject)
2392        {        {
2393        SCHECK_PARTIAL();        SCHECK_PARTIAL();
2394        MRRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
2395        }        }
2396      GETCHARINCTEST(c, eptr);      GETCHARINCTEST(c, eptr);
2397      if (      if (
2398  #ifdef SUPPORT_UTF8  #if defined SUPPORT_UTF || !(defined COMPILE_PCRE8)
2399         c >= 256 ||         c > 255 ||
2400  #endif  #endif
2401         (md->ctypes[c] & ctype_word) == 0         (md->ctypes[c] & ctype_word) == 0
2402         )         )
2403        MRRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
2404      ecode++;      ecode++;
2405      break;      break;
2406    
# Line 2213  for (;;) Line 2408  for (;;)
2408      if (eptr >= md->end_subject)      if (eptr >= md->end_subject)
2409        {        {
2410        SCHECK_PARTIAL();        SCHECK_PARTIAL();
2411        MRRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
2412        }        }
2413      GETCHARINCTEST(c, eptr);      GETCHARINCTEST(c, eptr);
2414      switch(c)      switch(c)
2415        {        {
2416        default: MRRETURN(MATCH_NOMATCH);        default: RRETURN(MATCH_NOMATCH);
2417    
2418        case 0x000d:        case 0x000d:
2419        if (eptr < md->end_subject && *eptr == 0x0a) eptr++;        if (eptr >= md->end_subject)
2420            {
2421            SCHECK_PARTIAL();
2422            }
2423          else if (*eptr == 0x0a) eptr++;
2424        break;        break;
2425    
2426        case 0x000a:        case 0x000a:
# Line 2232  for (;;) Line 2431  for (;;)
2431        case 0x0085:        case 0x0085:
2432        case 0x2028:        case 0x2028:
2433        case 0x2029:        case 0x2029:
2434        if (md->bsr_anycrlf) MRRETURN(MATCH_NOMATCH);        if (md->bsr_anycrlf) RRETURN(MATCH_NOMATCH);
2435        break;        break;
2436        }        }
2437      ecode++;      ecode++;
# Line 2242  for (;;) Line 2441  for (;;)
2441      if (eptr >= md->end_subject)      if (eptr >= md->end_subject)
2442        {        {
2443        SCHECK_PARTIAL();        SCHECK_PARTIAL();
2444        MRRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
2445        }        }
2446      GETCHARINCTEST(c, eptr);      GETCHARINCTEST(c, eptr);
2447      switch(c)      switch(c)
# Line 2267  for (;;) Line 2466  for (;;)
2466        case 0x202f:    /* NARROW NO-BREAK SPACE */        case 0x202f:    /* NARROW NO-BREAK SPACE */
2467        case 0x205f:    /* MEDIUM MATHEMATICAL SPACE */        case 0x205f:    /* MEDIUM MATHEMATICAL SPACE */
2468        case 0x3000:    /* IDEOGRAPHIC SPACE */        case 0x3000:    /* IDEOGRAPHIC SPACE */
2469        MRRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
2470        }        }
2471      ecode++;      ecode++;
2472      break;      break;
# Line 2276  for (;;) Line 2475  for (;;)
2475      if (eptr >= md->end_subject)      if (eptr >= md->end_subject)
2476        {        {
2477        SCHECK_PARTIAL();        SCHECK_PARTIAL();
2478        MRRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
2479        }        }
2480      GETCHARINCTEST(c, eptr);      GETCHARINCTEST(c, eptr);
2481      switch(c)      switch(c)
2482        {        {
2483        default: MRRETURN(MATCH_NOMATCH);        default: RRETURN(MATCH_NOMATCH);
2484        case 0x09:      /* HT */        case 0x09:      /* HT */
2485        case 0x20:      /* SPACE */        case 0x20:      /* SPACE */
2486        case 0xa0:      /* NBSP */        case 0xa0:      /* NBSP */
# Line 2310  for (;;) Line 2509  for (;;)
2509      if (eptr >= md->end_subject)      if (eptr >= md->end_subject)
2510        {        {
2511        SCHECK_PARTIAL();        SCHECK_PARTIAL();
2512        MRRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
2513        }        }
2514      GETCHARINCTEST(c, eptr);      GETCHARINCTEST(c, eptr);
2515      switch(c)      switch(c)
# Line 2323  for (;;) Line 2522  for (;;)
2522        case 0x85:      /* NEL */        case 0x85:      /* NEL */
2523        case 0x2028:    /* LINE SEPARATOR */        case 0x2028:    /* LINE SEPARATOR */
2524        case 0x2029:    /* PARAGRAPH SEPARATOR */        case 0x2029:    /* PARAGRAPH SEPARATOR */
2525        MRRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
2526        }        }
2527      ecode++;      ecode++;
2528      break;      break;
# Line 2332  for (;;) Line 2531  for (;;)
2531      if (eptr >= md->end_subject)      if (eptr >= md->end_subject)
2532        {        {
2533        SCHECK_PARTIAL();        SCHECK_PARTIAL();
2534        MRRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
2535        }        }
2536      GETCHARINCTEST(c, eptr);      GETCHARINCTEST(c, eptr);
2537      switch(c)      switch(c)
2538        {        {
2539        default: MRRETURN(MATCH_NOMATCH);        default: RRETURN(MATCH_NOMATCH);
2540        case 0x0a:      /* LF */        case 0x0a:      /* LF */
2541        case 0x0b:      /* VT */        case 0x0b:      /* VT */
2542        case 0x0c:      /* FF */        case 0x0c:      /* FF */
# Line 2359  for (;;) Line 2558  for (;;)
2558      if (eptr >= md->end_subject)      if (eptr >= md->end_subject)
2559        {        {
2560        SCHECK_PARTIAL();        SCHECK_PARTIAL();
2561        MRRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
2562        }        }
2563      GETCHARINCTEST(c, eptr);      GETCHARINCTEST(c, eptr);
2564        {        {
# Line 2368  for (;;) Line 2567  for (;;)
2567        switch(ecode[1])        switch(ecode[1])
2568          {          {
2569          case PT_ANY:          case PT_ANY:
2570          if (op == OP_NOTPROP) MRRETURN(MATCH_NOMATCH);          if (op == OP_NOTPROP) RRETURN(MATCH_NOMATCH);
2571          break;          break;
2572    
2573          case PT_LAMP:          case PT_LAMP:
2574          if ((prop->chartype == ucp_Lu ||          if ((prop->chartype == ucp_Lu ||
2575               prop->chartype == ucp_Ll ||               prop->chartype == ucp_Ll ||
2576               prop->chartype == ucp_Lt) == (op == OP_NOTPROP))               prop->chartype == ucp_Lt) == (op == OP_NOTPROP))
2577            MRRETURN(MATCH_NOMATCH);            RRETURN(MATCH_NOMATCH);
2578          break;          break;
2579    
2580          case PT_GC:          case PT_GC:
2581          if ((ecode[2] != _pcre_ucp_gentype[prop->chartype]) == (op == OP_PROP))          if ((ecode[2] != PRIV(ucp_gentype)[prop->chartype]) == (op == OP_PROP))
2582            MRRETURN(MATCH_NOMATCH);            RRETURN(MATCH_NOMATCH);
2583          break;          break;
2584    
2585          case PT_PC:          case PT_PC:
2586          if ((ecode[2] != prop->chartype) == (op == OP_PROP))          if ((ecode[2] != prop->chartype) == (op == OP_PROP))
2587            MRRETURN(MATCH_NOMATCH);            RRETURN(MATCH_NOMATCH);
2588          break;          break;
2589    
2590          case PT_SC:          case PT_SC:
2591          if ((ecode[2] != prop->script) == (op == OP_PROP))          if ((ecode[2] != prop->script) == (op == OP_PROP))
2592            MRRETURN(MATCH_NOMATCH);            RRETURN(MATCH_NOMATCH);
2593          break;          break;
2594    
2595          /* These are specials */          /* These are specials */
2596    
2597          case PT_ALNUM:          case PT_ALNUM:
2598          if ((_pcre_ucp_gentype[prop->chartype] == ucp_L ||          if ((PRIV(ucp_gentype)[prop->chartype] == ucp_L ||
2599               _pcre_ucp_gentype[prop->chartype] == ucp_N) == (op == OP_NOTPROP))               PRIV(ucp_gentype)[prop->chartype] == ucp_N) == (op == OP_NOTPROP))
2600            MRRETURN(MATCH_NOMATCH);            RRETURN(MATCH_NOMATCH);
2601          break;          break;
2602    
2603          case PT_SPACE:    /* Perl space */          case PT_SPACE:    /* Perl space */
2604          if ((_pcre_ucp_gentype[prop->chartype] == ucp_Z ||          if ((PRIV(ucp_gentype)[prop->chartype] == ucp_Z ||
2605               c == CHAR_HT || c == CHAR_NL || c == CHAR_FF || c == CHAR_CR)               c == CHAR_HT || c == CHAR_NL || c == CHAR_FF || c == CHAR_CR)
2606                 == (op == OP_NOTPROP))                 == (op == OP_NOTPROP))
2607            MRRETURN(MATCH_NOMATCH);            RRETURN(MATCH_NOMATCH);
2608          break;          break;
2609    
2610          case PT_PXSPACE:  /* POSIX space */          case PT_PXSPACE:  /* POSIX space */
2611          if ((_pcre_ucp_gentype[prop->chartype] == ucp_Z ||          if ((PRIV(ucp_gentype)[prop->chartype] == ucp_Z ||
2612               c == CHAR_HT || c == CHAR_NL || c == CHAR_VT ||               c == CHAR_HT || c == CHAR_NL || c == CHAR_VT ||
2613               c == CHAR_FF || c == CHAR_CR)               c == CHAR_FF || c == CHAR_CR)
2614                 == (op == OP_NOTPROP))                 == (op == OP_NOTPROP))
2615            MRRETURN(MATCH_NOMATCH);            RRETURN(MATCH_NOMATCH);
2616          break;          break;
2617    
2618          case PT_WORD:          case PT_WORD:
2619          if ((_pcre_ucp_gentype[prop->chartype] == ucp_L ||          if ((PRIV(ucp_gentype)[prop->chartype] == ucp_L ||
2620               _pcre_ucp_gentype[prop->chartype] == ucp_N ||               PRIV(ucp_gentype)[prop->chartype] == ucp_N ||
2621               c == CHAR_UNDERSCORE) == (op == OP_NOTPROP))               c == CHAR_UNDERSCORE) == (op == OP_NOTPROP))
2622            MRRETURN(MATCH_NOMATCH);            RRETURN(MATCH_NOMATCH);
2623          break;          break;
2624    
2625          /* This should never occur */          /* This should never occur */
# Line 2440  for (;;) Line 2639  for (;;)
2639      if (eptr >= md->end_subject)      if (eptr >= md->end_subject)
2640        {        {
2641        SCHECK_PARTIAL();        SCHECK_PARTIAL();
2642        MRRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
2643        }        }
2644      GETCHARINCTEST(c, eptr);      GETCHARINCTEST(c, eptr);
2645        if (UCD_CATEGORY(c) == ucp_M) RRETURN(MATCH_NOMATCH);
2646        while (eptr < md->end_subject)
2647        {        {
2648        int category = UCD_CATEGORY(c);        int len = 1;
2649        if (category == ucp_M) MRRETURN(MATCH_NOMATCH);        if (!utf) c = *eptr; else { GETCHARLEN(c, eptr, len); }
2650        while (eptr < md->end_subject)        if (UCD_CATEGORY(c) != ucp_M) break;
2651          {        eptr += len;
         int len = 1;  
         if (!utf8) c = *eptr; else  
           {  
           GETCHARLEN(c, eptr, len);  
           }  
         category = UCD_CATEGORY(c);  
         if (category != ucp_M) break;  
         eptr += len;  
         }  
2652        }        }
2653        CHECK_PARTIAL();
2654      ecode++;      ecode++;
2655      break;      break;
2656  #endif  #endif
# Line 2472  for (;;) Line 2665  for (;;)
2665      loops). */      loops). */
2666    
2667      case OP_REF:      case OP_REF:
2668      case OP_REFI:      case OP_REFI:
2669      caseless = op == OP_REFI;      caseless = op == OP_REFI;
2670      offset = GET2(ecode, 1) << 1;               /* Doubled ref number */      offset = GET2(ecode, 1) << 1;               /* Doubled ref number */
2671      ecode += 3;      ecode += 1 + IMM2_SIZE;
2672    
2673      /* If the reference is unset, there are two possibilities:      /* If the reference is unset, there are two possibilities:
2674    
# Line 2515  for (;;) Line 2708  for (;;)
2708        case OP_CRMINRANGE:        case OP_CRMINRANGE:
2709        minimize = (*ecode == OP_CRMINRANGE);        minimize = (*ecode == OP_CRMINRANGE);
2710        min = GET2(ecode, 1);        min = GET2(ecode, 1);
2711        max = GET2(ecode, 3);        max = GET2(ecode, 1 + IMM2_SIZE);
2712        if (max == 0) max = INT_MAX;        if (max == 0) max = INT_MAX;
2713        ecode += 5;        ecode += 1 + 2 * IMM2_SIZE;
2714        break;        break;
2715    
2716        default:               /* No repeat follows */        default:               /* No repeat follows */
2717        if ((length = match_ref(offset, eptr, length, md, caseless)) < 0)        if ((length = match_ref(offset, eptr, length, md, caseless)) < 0)
2718          {          {
2719            if (length == -2) eptr = md->end_subject;   /* Partial match */
2720          CHECK_PARTIAL();          CHECK_PARTIAL();
2721          MRRETURN(MATCH_NOMATCH);          RRETURN(MATCH_NOMATCH);
2722          }          }
2723        eptr += length;        eptr += length;
2724        continue;              /* With the main loop */        continue;              /* With the main loop */
2725        }        }
2726    
2727      /* Handle repeated back references. If the length of the reference is      /* Handle repeated back references. If the length of the reference is
2728      zero, just continue with the main loop. */      zero, just continue with the main loop. If the length is negative, it
2729        means the reference is unset in non-Java-compatible mode. If the minimum is
2730        zero, we can continue at the same level without recursion. For any other
2731        minimum, carrying on will result in NOMATCH. */
2732    
2733      if (length == 0) continue;      if (length == 0) continue;
2734        if (length < 0 && min == 0) continue;
2735    
2736      /* First, ensure the minimum number of matches are present. We get back      /* First, ensure the minimum number of matches are present. We get back
2737      the length of the reference string explicitly rather than passing the      the length of the reference string explicitly rather than passing the
# Line 2541  for (;;) Line 2739  for (;;)
2739    
2740      for (i = 1; i <= min; i++)      for (i = 1; i <= min; i++)
2741        {        {
2742        int slength;        int slength;
2743        if ((slength = match_ref(offset, eptr, length, md, caseless)) < 0)        if ((slength = match_ref(offset, eptr, length, md, caseless)) < 0)
2744          {          {
2745            if (slength == -2) eptr = md->end_subject;   /* Partial match */
2746          CHECK_PARTIAL();          CHECK_PARTIAL();
2747          MRRETURN(MATCH_NOMATCH);          RRETURN(MATCH_NOMATCH);
2748          }          }
2749        eptr += slength;        eptr += slength;
2750        }        }
# Line 2561  for (;;) Line 2760  for (;;)
2760        {        {
2761        for (fi = min;; fi++)        for (fi = min;; fi++)
2762          {          {
2763          int slength;          int slength;
2764          RMATCH(eptr, ecode, offset_top, md, eptrb, RM14);          RMATCH(eptr, ecode, offset_top, md, eptrb, RM14);
2765          if (rrc != MATCH_NOMATCH) RRETURN(rrc);          if (rrc != MATCH_NOMATCH) RRETURN(rrc);
2766          if (fi >= max) MRRETURN(MATCH_NOMATCH);          if (fi >= max) RRETURN(MATCH_NOMATCH);
2767          if ((slength = match_ref(offset, eptr, length, md, caseless)) < 0)          if ((slength = match_ref(offset, eptr, length, md, caseless)) < 0)
2768            {            {
2769              if (slength == -2) eptr = md->end_subject;   /* Partial match */
2770            CHECK_PARTIAL();            CHECK_PARTIAL();
2771            MRRETURN(MATCH_NOMATCH);            RRETURN(MATCH_NOMATCH);
2772            }            }
2773          eptr += slength;          eptr += slength;
2774          }          }
# Line 2582  for (;;) Line 2782  for (;;)
2782        pp = eptr;        pp = eptr;
2783        for (i = min; i < max; i++)        for (i = min; i < max; i++)
2784          {          {
2785          int slength;          int slength;
2786          if ((slength = match_ref(offset, eptr, length, md, caseless)) < 0)          if ((slength = match_ref(offset, eptr, length, md, caseless)) < 0)
2787            {            {
2788            CHECK_PARTIAL();            /* Can't use CHECK_PARTIAL because we don't want to update eptr in
2789              the soft partial matching case. */
2790    
2791              if (slength == -2 && md->partial != 0 &&
2792                  md->end_subject > md->start_used_ptr)
2793                {
2794                md->hitend = TRUE;
2795                if (md->partial > 1) RRETURN(PCRE_ERROR_PARTIAL);
2796                }
2797            break;            break;
2798            }            }
2799          eptr += slength;          eptr += slength;
2800          }          }
2801    
2802        while (eptr >= pp)        while (eptr >= pp)
2803          {          {
2804          RMATCH(eptr, ecode, offset_top, md, eptrb, RM15);          RMATCH(eptr, ecode, offset_top, md, eptrb, RM15);
2805          if (rrc != MATCH_NOMATCH) RRETURN(rrc);          if (rrc != MATCH_NOMATCH) RRETURN(rrc);
2806          eptr -= length;          eptr -= length;
2807          }          }
2808        MRRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
2809        }        }
2810      /* Control never gets here */      /* Control never gets here */
2811    
# Line 2614  for (;;) Line 2823  for (;;)
2823      case OP_NCLASS:      case OP_NCLASS:
2824      case OP_CLASS:      case OP_CLASS:
2825        {        {
2826          /* The data variable is saved across frames, so the byte map needs to
2827          be stored there. */
2828    #define BYTE_MAP ((pcre_uint8 *)data)
2829        data = ecode + 1;                /* Save for matching */        data = ecode + 1;                /* Save for matching */
2830        ecode += 33;                     /* Advance past the item */        ecode += 1 + (32 / sizeof(pcre_uchar)); /* Advance past the item */
2831    
2832        switch (*ecode)        switch (*ecode)
2833          {          {
# Line 2636  for (;;) Line 2848  for (;;)
2848          case OP_CRMINRANGE:          case OP_CRMINRANGE:
2849          minimize = (*ecode == OP_CRMINRANGE);          minimize = (*ecode == OP_CRMINRANGE);
2850          min = GET2(ecode, 1);          min = GET2(ecode, 1);
2851          max = GET2(ecode, 3);          max = GET2(ecode, 1 + IMM2_SIZE);
2852          if (max == 0) max = INT_MAX;          if (max == 0) max = INT_MAX;
2853          ecode += 5;          ecode += 1 + 2 * IMM2_SIZE;
2854          break;          break;
2855    
2856          default:               /* No repeat follows */          default:               /* No repeat follows */
# Line 2648  for (;;) Line 2860  for (;;)
2860    
2861        /* First, ensure the minimum number of matches are present. */        /* First, ensure the minimum number of matches are present. */
2862    
2863  #ifdef SUPPORT_UTF8  #ifdef SUPPORT_UTF
2864        /* UTF-8 mode */        if (utf)
       if (utf8)  
2865          {          {
2866          for (i = 1; i <= min; i++)          for (i = 1; i <= min; i++)
2867            {            {
2868            if (eptr >= md->end_subject)            if (eptr >= md->end_subject)
2869              {              {
2870              SCHECK_PARTIAL();              SCHECK_PARTIAL();
2871              MRRETURN(MATCH_NOMATCH);              RRETURN(MATCH_NOMATCH);
2872              }              }
2873            GETCHARINC(c, eptr);            GETCHARINC(c, eptr);
2874            if (c > 255)            if (c > 255)
2875              {              {
2876              if (op == OP_CLASS) MRRETURN(MATCH_NOMATCH);              if (op == OP_CLASS) RRETURN(MATCH_NOMATCH);
2877              }              }
2878            else            else
2879              {              if ((BYTE_MAP[c/8] & (1 << (c&7))) == 0) RRETURN(MATCH_NOMATCH);
             if ((data[c/8] & (1 << (c&7))) == 0) MRRETURN(MATCH_NOMATCH);  
             }  
2880            }            }
2881          }          }
2882        else        else
2883  #endif  #endif
2884        /* Not UTF-8 mode */        /* Not UTF mode */
2885          {          {
2886          for (i = 1; i <= min; i++)          for (i = 1; i <= min; i++)
2887            {            {
2888            if (eptr >= md->end_subject)            if (eptr >= md->end_subject)
2889              {              {
2890              SCHECK_PARTIAL();              SCHECK_PARTIAL();
2891              MRRETURN(MATCH_NOMATCH);              RRETURN(MATCH_NOMATCH);
2892              }              }
2893            c = *eptr++;            c = *eptr++;
2894            if ((data[c/8] & (1 << (c&7))) == 0) MRRETURN(MATCH_NOMATCH);  #ifndef COMPILE_PCRE8
2895              if (c > 255)
2896                {
2897                if (op == OP_CLASS) RRETURN(MATCH_NOMATCH);
2898                }
2899              else
2900    #endif
2901                if ((BYTE_MAP[c/8] & (1 << (c&7))) == 0) RRETURN(MATCH_NOMATCH);
2902            }            }
2903          }          }
2904    
# Line 2696  for (;;) Line 2912  for (;;)
2912    
2913        if (minimize)        if (minimize)
2914          {          {
2915  #ifdef SUPPORT_UTF8  #ifdef SUPPORT_UTF
2916          /* UTF-8 mode */          if (utf)
         if (utf8)  
2917            {            {
2918            for (fi = min;; fi++)            for (fi = min;; fi++)
2919              {              {
2920              RMATCH(eptr, ecode, offset_top, md, eptrb, RM16);              RMATCH(eptr, ecode, offset_top, md, eptrb, RM16);
2921              if (rrc != MATCH_NOMATCH) RRETURN(rrc);              if (rrc != MATCH_NOMATCH) RRETURN(rrc);
2922              if (fi >= max) MRRETURN(MATCH_NOMATCH);              if (fi >= max) RRETURN(MATCH_NOMATCH);
2923              if (eptr >= md->end_subject)              if (eptr >= md->end_subject)
2924                {                {
2925                SCHECK_PARTIAL();                SCHECK_PARTIAL();
2926                MRRETURN(MATCH_NOMATCH);                RRETURN(MATCH_NOMATCH);
2927                }                }
2928              GETCHARINC(c, eptr);              GETCHARINC(c, eptr);
2929              if (c > 255)              if (c > 255)
2930                {                {
2931                if (op == OP_CLASS) MRRETURN(MATCH_NOMATCH);                if (op == OP_CLASS) RRETURN(MATCH_NOMATCH);
2932                }                }
2933              else              else
2934                {                if ((BYTE_MAP[c/8] & (1 << (c&7))) == 0) RRETURN(MATCH_NOMATCH);
               if ((data[c/8] & (1 << (c&7))) == 0) MRRETURN(MATCH_NOMATCH);  
               }  
2935              }              }
2936            }            }
2937          else          else
2938  #endif  #endif
2939          /* Not UTF-8 mode */          /* Not UTF mode */
2940            {            {
2941            for (fi = min;; fi++)            for (fi = min;; fi++)
2942              {              {
2943              RMATCH(eptr, ecode, offset_top, md, eptrb, RM17);              RMATCH(eptr, ecode, offset_top, md, eptrb, RM17);
2944              if (rrc != MATCH_NOMATCH) RRETURN(rrc);              if (rrc != MATCH_NOMATCH) RRETURN(rrc);
2945              if (fi >= max) MRRETURN(MATCH_NOMATCH);              if (fi >= max) RRETURN(MATCH_NOMATCH);
2946              if (eptr >= md->end_subject)              if (eptr >= md->end_subject)
2947                {                {
2948                SCHECK_PARTIAL();                SCHECK_PARTIAL();
2949                MRRETURN(MATCH_NOMATCH);                RRETURN(MATCH_NOMATCH);
2950                }                }
2951              c = *eptr++;              c = *eptr++;
2952              if ((data[c/8] & (1 << (c&7))) == 0) MRRETURN(MATCH_NOMATCH);  #ifndef COMPILE_PCRE8
2953                if (c > 255)
2954                  {
2955                  if (op == OP_CLASS) RRETURN(MATCH_NOMATCH);
2956                  }
2957                else
2958    #endif
2959                  if ((BYTE_MAP[c/8] & (1 << (c&7))) == 0) RRETURN(MATCH_NOMATCH);
2960              }              }
2961            }            }
2962          /* Control never gets here */          /* Control never gets here */
# Line 2748  for (;;) Line 2968  for (;;)
2968          {          {
2969          pp = eptr;          pp = eptr;
2970    
2971  #ifdef SUPPORT_UTF8  #ifdef SUPPORT_UTF
2972          /* UTF-8 mode */          if (utf)
         if (utf8)  
2973            {            {
2974            for (i = min; i < max; i++)            for (i = min; i < max; i++)
2975              {              {
# Line 2766  for (;;) Line 2985  for (;;)
2985                if (op == OP_CLASS) break;                if (op == OP_CLASS) break;
2986                }                }
2987              else              else
2988                {                if ((BYTE_MAP[c/8] & (1 << (c&7))) == 0) break;
               if ((data[c/8] & (1 << (c&7))) == 0) break;  
               }  
2989              eptr += len;              eptr += len;
2990              }              }
2991            for (;;)            for (;;)
# Line 2781  for (;;) Line 2998  for (;;)
2998            }            }
2999          else          else
3000  #endif  #endif
3001            /* Not UTF-8 mode */            /* Not UTF mode */
3002            {            {
3003            for (i = min; i < max; i++)            for (i = min; i < max; i++)
3004              {              {
# Line 2791  for (;;) Line 3008  for (;;)
3008                break;                break;
3009                }                }
3010              c = *eptr;              c = *eptr;
3011              if ((data[c/8] & (1 << (c&7))) == 0) break;  #ifndef COMPILE_PCRE8
3012                if (c > 255)
3013                  {
3014                  if (op == OP_CLASS) break;
3015                  }
3016                else
3017    #endif
3018                  if ((BYTE_MAP[c/8] & (1 << (c&7))) == 0) break;
3019              eptr++;              eptr++;
3020              }              }
3021            while (eptr >= pp)            while (eptr >= pp)
# Line 2802  for (;;) Line 3026  for (;;)
3026              }              }
3027            }            }
3028    
3029          MRRETURN(MATCH_NOMATCH);          RRETURN(MATCH_NOMATCH);
3030          }          }
3031    #undef BYTE_MAP
3032        }        }
3033      /* Control never gets here */      /* Control never gets here */
3034    
# Line 2812  for (;;) Line 3037  for (;;)
3037      when UTF-8 mode mode is supported. Nevertheless, we may not be in UTF-8      when UTF-8 mode mode is supported. Nevertheless, we may not be in UTF-8
3038      mode, because Unicode properties are supported in non-UTF-8 mode. */      mode, because Unicode properties are supported in non-UTF-8 mode. */
3039    
3040  #ifdef SUPPORT_UTF8  #if defined SUPPORT_UTF || !defined COMPILE_PCRE8
3041      case OP_XCLASS:      case OP_XCLASS:
3042        {        {
3043        data = ecode + 1 + LINK_SIZE;                /* Save for matching */        data = ecode + 1 + LINK_SIZE;                /* Save for matching */
# Line 2837  for (;;) Line 3062  for (;;)
3062          case OP_CRMINRANGE:          case OP_CRMINRANGE:
3063          minimize = (*ecode == OP_CRMINRANGE);          minimize = (*ecode == OP_CRMINRANGE);
3064          min = GET2(ecode, 1);          min = GET2(ecode, 1);
3065          max = GET2(ecode, 3);          max = GET2(ecode, 1 + IMM2_SIZE);
3066          if (max == 0) max = INT_MAX;          if (max == 0) max = INT_MAX;
3067          ecode += 5;          ecode += 1 + 2 * IMM2_SIZE;
3068          break;          break;
3069    
3070          default:               /* No repeat follows */          default:               /* No repeat follows */
# Line 2854  for (;;) Line 3079  for (;;)
3079          if (eptr >= md->end_subject)          if (eptr >= md->end_subject)
3080            {            {
3081            SCHECK_PARTIAL();            SCHECK_PARTIAL();
3082            MRRETURN(MATCH_NOMATCH);            RRETURN(MATCH_NOMATCH);
3083            }            }
3084          GETCHARINCTEST(c, eptr);          GETCHARINCTEST(c, eptr);
3085          if (!_pcre_xclass(c, data)) MRRETURN(MATCH_NOMATCH);          if (!PRIV(xclass)(c, data, utf)) RRETURN(MATCH_NOMATCH);
3086          }          }
3087    
3088        /* 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 2874  for (;;) Line 3099  for (;;)
3099            {            {
3100            RMATCH(eptr, ecode, offset_top, md, eptrb, RM20);            RMATCH(eptr, ecode, offset_top, md, eptrb, RM20);
3101            if (rrc != MATCH_NOMATCH) RRETURN(rrc);            if (rrc != MATCH_NOMATCH) RRETURN(rrc);
3102            if (fi >= max) MRRETURN(MATCH_NOMATCH);            if (fi >= max) RRETURN(MATCH_NOMATCH);
3103            if (eptr >= md->end_subject)            if (eptr >= md->end_subject)
3104              {              {
3105              SCHECK_PARTIAL();              SCHECK_PARTIAL();
3106              MRRETURN(MATCH_NOMATCH);              RRETURN(MATCH_NOMATCH);
3107              }              }
3108            GETCHARINCTEST(c, eptr);            GETCHARINCTEST(c, eptr);
3109            if (!_pcre_xclass(c, data)) MRRETURN(MATCH_NOMATCH);            if (!PRIV(xclass)(c, data, utf)) RRETURN(MATCH_NOMATCH);
3110            }            }
3111          /* Control never gets here */          /* Control never gets here */
3112          }          }
# Line 2899  for (;;) Line 3124  for (;;)
3124              SCHECK_PARTIAL();              SCHECK_PARTIAL();
3125              break;              break;
3126              }              }
3127    #ifdef SUPPORT_UTF
3128            GETCHARLENTEST(c, eptr, len);            GETCHARLENTEST(c, eptr, len);
3129            if (!_pcre_xclass(c, data)) break;  #else
3130              c = *eptr;
3131    #endif
3132              if (!PRIV(xclass)(c, data, utf)) break;
3133            eptr += len;            eptr += len;
3134            }            }
3135          for(;;)          for(;;)
# Line 2908  for (;;) Line 3137  for (;;)
3137            RMATCH(eptr, ecode, offset_top, md, eptrb, RM21);            RMATCH(eptr, ecode, offset_top, md, eptrb, RM21);
3138            if (rrc != MATCH_NOMATCH) RRETURN(rrc);            if (rrc != MATCH_NOMATCH) RRETURN(rrc);
3139            if (eptr-- == pp) break;        /* Stop if tried at original pos */            if (eptr-- == pp) break;        /* Stop if tried at original pos */
3140            if (utf8) BACKCHAR(eptr);  #ifdef SUPPORT_UTF
3141              if (utf) BACKCHAR(eptr);
3142    #endif
3143            }            }
3144          MRRETURN(MATCH_NOMATCH);          RRETURN(MATCH_NOMATCH);
3145          }          }
3146    
3147        /* Control never gets here */        /* Control never gets here */
# Line 2920  for (;;) Line 3151  for (;;)
3151      /* Match a single character, casefully */      /* Match a single character, casefully */
3152    
3153      case OP_CHAR:      case OP_CHAR:
3154  #ifdef SUPPORT_UTF8  #ifdef SUPPORT_UTF
3155      if (utf8)      if (utf)
3156        {        {
3157        length = 1;        length = 1;
3158        ecode++;        ecode++;
# Line 2929  for (;;) Line 3160  for (;;)
3160        if (length > md->end_subject - eptr)        if (length > md->end_subject - eptr)
3161          {          {
3162          CHECK_PARTIAL();             /* Not SCHECK_PARTIAL() */          CHECK_PARTIAL();             /* Not SCHECK_PARTIAL() */
3163          MRRETURN(MATCH_NOMATCH);          RRETURN(MATCH_NOMATCH);
3164          }          }
3165        while (length-- > 0) if (*ecode++ != *eptr++) MRRETURN(MATCH_NOMATCH);        while (length-- > 0) if (*ecode++ != *eptr++) RRETURN(MATCH_NOMATCH);
3166        }        }
3167      else      else
3168  #endif  #endif
3169        /* Not UTF mode */
     /* Non-UTF-8 mode */  
3170        {        {
3171        if (md->end_subject - eptr < 1)        if (md->end_subject - eptr < 1)
3172          {          {
3173          SCHECK_PARTIAL();            /* This one can use SCHECK_PARTIAL() */          SCHECK_PARTIAL();            /* This one can use SCHECK_PARTIAL() */
3174          MRRETURN(MATCH_NOMATCH);          RRETURN(MATCH_NOMATCH);
3175          }          }
3176        if (ecode[1] != *eptr++) MRRETURN(MATCH_NOMATCH);        if (ecode[1] != *eptr++) RRETURN(MATCH_NOMATCH);
3177        ecode += 2;        ecode += 2;
3178        }        }
3179      break;      break;
3180    
3181      /* Match a single character, caselessly */      /* Match a single character, caselessly. If we are at the end of the
3182        subject, give up immediately. */
3183    
3184      case OP_CHARI:      case OP_CHARI:
3185  #ifdef SUPPORT_UTF8      if (eptr >= md->end_subject)
3186      if (utf8)        {
3187          SCHECK_PARTIAL();
3188          RRETURN(MATCH_NOMATCH);
3189          }
3190    
3191    #ifdef SUPPORT_UTF
3192        if (utf)
3193        {        {
3194        length = 1;        length = 1;
3195        ecode++;        ecode++;
3196        GETCHARLEN(fc, ecode, length);        GETCHARLEN(fc, ecode, length);
3197    
       if (length > md->end_subject - eptr)  
         {  
         CHECK_PARTIAL();             /* Not SCHECK_PARTIAL() */  
         MRRETURN(MATCH_NOMATCH);  
         }  
   
3198        /* 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
3199        can use the fast lookup table. */        we know that its other case must also be one byte long, so we can use the
3200          fast lookup table. We know that there is at least one byte left in the
3201          subject. */
3202    
3203        if (fc < 128)        if (fc < 128)
3204          {          {
3205          if (md->lcc[*ecode++] != md->lcc[*eptr++]) MRRETURN(MATCH_NOMATCH);          if (md->lcc[fc]
3206                != TABLE_GET(*eptr, md->lcc, *eptr)) RRETURN(MATCH_NOMATCH);
3207            ecode++;
3208            eptr++;
3209          }          }
3210    
3211        /* Otherwise we must pick up the subject character */        /* Otherwise we must pick up the subject character. Note that we cannot
3212          use the value of "length" to check for sufficient bytes left, because the
3213          other case of the character may have more or fewer bytes.  */
3214    
3215        else        else
3216          {          {
# Line 2988  for (;;) Line 3226  for (;;)
3226  #ifdef SUPPORT_UCP  #ifdef SUPPORT_UCP
3227            if (dc != UCD_OTHERCASE(fc))            if (dc != UCD_OTHERCASE(fc))
3228  #endif  #endif
3229              MRRETURN(MATCH_NOMATCH);              RRETURN(MATCH_NOMATCH);
3230            }            }
3231          }          }
3232        }        }
3233      else      else
3234  #endif   /* SUPPORT_UTF8 */  #endif   /* SUPPORT_UTF */
3235    
3236      /* Non-UTF-8 mode */      /* Not UTF mode */
3237        {        {
3238        if (md->end_subject - eptr < 1)        if (TABLE_GET(ecode[1], md->lcc, ecode[1])
3239          {            != TABLE_GET(*eptr, md->lcc, *eptr)) RRETURN(MATCH_NOMATCH);
3240          SCHECK_PARTIAL();            /* This one can use SCHECK_PARTIAL() */        eptr++;
         MRRETURN(MATCH_NOMATCH);  
         }  
       if (md->lcc[ecode[1]] != md->lcc[*eptr++]) MRRETURN(MATCH_NOMATCH);  
3241        ecode += 2;        ecode += 2;
3242        }        }
3243      break;      break;
# Line 3012  for (;;) Line 3247  for (;;)
3247      case OP_EXACT:      case OP_EXACT:
3248      case OP_EXACTI:      case OP_EXACTI:
3249      min = max = GET2(ecode, 1);      min = max = GET2(ecode, 1);
3250      ecode += 3;      ecode += 1 + IMM2_SIZE;
3251      goto REPEATCHAR;      goto REPEATCHAR;
3252    
3253      case OP_POSUPTO:      case OP_POSUPTO:
# Line 3027  for (;;) Line 3262  for (;;)
3262      min = 0;      min = 0;
3263      max = GET2(ecode, 1);      max = GET2(ecode, 1);
3264      minimize = *ecode == OP_MINUPTO || *ecode == OP_MINUPTOI;      minimize = *ecode == OP_MINUPTO || *ecode == OP_MINUPTOI;
3265      ecode += 3;      ecode += 1 + IMM2_SIZE;
3266      goto REPEATCHAR;      goto REPEATCHAR;
3267    
3268      case OP_POSSTAR:      case OP_POSSTAR:
# Line 3075  for (;;) Line 3310  for (;;)
3310      /* Common code for all repeated single-character matches. */      /* Common code for all repeated single-character matches. */
3311    
3312      REPEATCHAR:      REPEATCHAR:
3313  #ifdef SUPPORT_UTF8  #ifdef SUPPORT_UTF
3314      if (utf8)      if (utf)
3315        {        {
3316        length = 1;        length = 1;
3317        charptr = ecode;        charptr = ecode;
# Line 3092  for (;;) Line 3327  for (;;)
3327          unsigned int othercase;          unsigned int othercase;
3328          if (op >= OP_STARI &&     /* Caseless */          if (op >= OP_STARI &&     /* Caseless */
3329              (othercase = UCD_OTHERCASE(fc)) != fc)              (othercase = UCD_OTHERCASE(fc)) != fc)
3330            oclength = _pcre_ord2utf8(othercase, occhars);            oclength = PRIV(ord2utf)(othercase, occhars);
3331          else oclength = 0;          else oclength = 0;
3332  #endif  /* SUPPORT_UCP */  #endif  /* SUPPORT_UCP */
3333    
3334          for (i = 1; i <= min; i++)          for (i = 1; i <= min; i++)
3335            {            {
3336            if (eptr <= md->end_subject - length &&            if (eptr <= md->end_subject - length &&
3337              memcmp(eptr, charptr, length) == 0) eptr += length;              memcmp(eptr, charptr, IN_UCHARS(length)) == 0) eptr += length;
3338  #ifdef SUPPORT_UCP  #ifdef SUPPORT_UCP
3339            else if (oclength > 0 &&            else if (oclength > 0 &&
3340                     eptr <= md->end_subject - oclength &&                     eptr <= md->end_subject - oclength &&
3341                     memcmp(eptr, occhars, oclength) == 0) eptr += oclength;                     memcmp(eptr, occhars, IN_UCHARS(oclength)) == 0) eptr += oclength;
3342  #endif  /* SUPPORT_UCP */  #endif  /* SUPPORT_UCP */
3343            else            else
3344              {              {
3345              CHECK_PARTIAL();              CHECK_PARTIAL();
3346              MRRETURN(MATCH_NOMATCH);              RRETURN(MATCH_NOMATCH);
3347              }              }
3348            }            }
3349    
# Line 3120  for (;;) Line 3355  for (;;)
3355              {              {
3356              RMATCH(eptr, ecode, offset_top, md, eptrb, RM22);              RMATCH(eptr, ecode, offset_top, md, eptrb, RM22);
3357              if (rrc != MATCH_NOMATCH) RRETURN(rrc);              if (rrc != MATCH_NOMATCH) RRETURN(rrc);
3358              if (fi >= max) MRRETURN(MATCH_NOMATCH);              if (fi >= max) RRETURN(MATCH_NOMATCH);
3359              if (eptr <= md->end_subject - length &&              if (eptr <= md->end_subject - length &&
3360                memcmp(eptr, charptr, length) == 0) eptr += length;                memcmp(eptr, charptr, IN_UCHARS(length)) == 0) eptr += length;
3361  #ifdef SUPPORT_UCP  #ifdef SUPPORT_UCP
3362              else if (oclength > 0 &&              else if (oclength > 0 &&
3363                       eptr <= md->end_subject - oclength &&                       eptr <= md->end_subject - oclength &&
3364                       memcmp(eptr, occhars, oclength) == 0) eptr += oclength;                       memcmp(eptr, occhars, IN_UCHARS(oclength)) == 0) eptr += oclength;
3365  #endif  /* SUPPORT_UCP */  #endif  /* SUPPORT_UCP */
3366              else              else
3367                {                {
3368                CHECK_PARTIAL();                CHECK_PARTIAL();
3369                MRRETURN(MATCH_NOMATCH);                RRETURN(MATCH_NOMATCH);
3370                }                }
3371              }              }
3372            /* Control never gets here */            /* Control never gets here */
# Line 3143  for (;;) Line 3378  for (;;)
3378            for (i = min; i < max; i++)            for (i = min; i < max; i++)
3379              {              {
3380              if (eptr <= md->end_subject - length &&              if (eptr <= md->end_subject - length &&
3381                  memcmp(eptr, charptr, length) == 0) eptr += length;                  memcmp(eptr, charptr, IN_UCHARS(length)) == 0) eptr += length;
3382  #ifdef SUPPORT_UCP  #ifdef SUPPORT_UCP
3383              else if (oclength > 0 &&              else if (oclength > 0 &&
3384                       eptr <= md->end_subject - oclength &&                       eptr <= md->end_subject - oclength &&
3385                       memcmp(eptr, occhars, oclength) == 0) eptr += oclength;                       memcmp(eptr, occhars, IN_UCHARS(oclength)) == 0) eptr += oclength;
3386  #endif  /* SUPPORT_UCP */  #endif  /* SUPPORT_UCP */
3387              else              else
3388                {                {
# Line 3162  for (;;) Line 3397  for (;;)
3397              {              {
3398              RMATCH(eptr, ecode, offset_top, md, eptrb, RM23);              RMATCH(eptr, ecode, offset_top, md, eptrb, RM23);
3399              if (rrc != MATCH_NOMATCH) RRETURN(rrc);              if (rrc != MATCH_NOMATCH) RRETURN(rrc);
3400              if (eptr == pp) { MRRETURN(MATCH_NOMATCH); }              if (eptr == pp) { RRETURN(MATCH_NOMATCH); }
3401  #ifdef SUPPORT_UCP  #ifdef SUPPORT_UCP
3402              eptr--;              eptr--;
3403              BACKCHAR(eptr);              BACKCHAR(eptr);
# Line 3179  for (;;) Line 3414  for (;;)
3414        value of fc will always be < 128. */        value of fc will always be < 128. */
3415        }        }
3416      else      else
3417  #endif  /* SUPPORT_UTF8 */  #endif  /* SUPPORT_UTF */
3418          /* When not in UTF-8 mode, load a single-byte character. */
3419      /* When not in UTF-8 mode, load a single-byte character. */        fc = *ecode++;
3420    
3421      fc = *ecode++;      /* The value of fc at this point is always one character, though we may
3422        or may not be in UTF mode. The code is duplicated for the caseless and
     /* 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  
3423      caseful cases, for speed, since matching characters is likely to be quite      caseful cases, for speed, since matching characters is likely to be quite
3424      common. First, ensure the minimum number of matches are present. If min =      common. First, ensure the minimum number of matches are present. If min =
3425      max, continue at the same level without recursing. Otherwise, if      max, continue at the same level without recursing. Otherwise, if
# Line 3195  for (;;) Line 3428  for (;;)
3428      maximizing, find the maximum number of characters and work backwards. */      maximizing, find the maximum number of characters and work backwards. */
3429    
3430      DPRINTF(("matching %c{%d,%d} against subject %.*s\n", fc, min, max,      DPRINTF(("matching %c{%d,%d} against subject %.*s\n", fc, min, max,
3431        max, eptr));        max, (char *)eptr));
3432    
3433      if (op >= OP_STARI)  /* Caseless */      if (op >= OP_STARI)  /* Caseless */
3434        {        {
3435        fc = md->lcc[fc];  #ifdef COMPILE_PCRE8
3436          /* fc must be < 128 if UTF is enabled. */
3437          foc = md->fcc[fc];
3438    #else
3439    #ifdef SUPPORT_UTF
3440    #ifdef SUPPORT_UCP
3441          if (utf && fc > 127)
3442            foc = UCD_OTHERCASE(fc);
3443    #else
3444          if (utf && fc > 127)
3445            foc = fc;
3446    #endif /* SUPPORT_UCP */
3447          else
3448    #endif /* SUPPORT_UTF */
3449            foc = TABLE_GET(fc, md->fcc, fc);
3450    #endif /* COMPILE_PCRE8 */
3451    
3452        for (i = 1; i <= min; i++)        for (i = 1; i <= min; i++)
3453          {          {
3454          if (eptr >= md->end_subject)          if (eptr >= md->end_subject)
3455            {            {
3456            SCHECK_PARTIAL();            SCHECK_PARTIAL();
3457            MRRETURN(MATCH_NOMATCH);            RRETURN(MATCH_NOMATCH);
3458            }            }
3459          if (fc != md->lcc[*eptr++]) MRRETURN(MATCH_NOMATCH);          if (fc != *eptr && foc != *eptr) RRETURN(MATCH_NOMATCH);
3460            eptr++;
3461          }          }
3462        if (min == max) continue;        if (min == max) continue;
3463        if (minimize)        if (minimize)
# Line 3216  for (;;) Line 3466  for (;;)
3466            {            {
3467            RMATCH(eptr, ecode, offset_top, md, eptrb, RM24);            RMATCH(eptr, ecode, offset_top, md, eptrb, RM24);
3468            if (rrc != MATCH_NOMATCH) RRETURN(rrc);            if (rrc != MATCH_NOMATCH) RRETURN(rrc);
3469            if (fi >= max) MRRETURN(MATCH_NOMATCH);            if (fi >= max) RRETURN(MATCH_NOMATCH);
3470            if (eptr >= md->end_subject)            if (eptr >= md->end_subject)
3471              {              {
3472              SCHECK_PARTIAL();              SCHECK_PARTIAL();
3473              MRRETURN(MATCH_NOMATCH);              RRETURN(MATCH_NOMATCH);
3474              }              }
3475            if (fc != md->lcc[*eptr++]) MRRETURN(MATCH_NOMATCH);            if (fc != *eptr && foc != *eptr) RRETURN(MATCH_NOMATCH);
3476              eptr++;
3477            }            }
3478          /* Control never gets here */          /* Control never gets here */
3479          }          }
# Line 3236  for (;;) Line 3487  for (;;)
3487              SCHECK_PARTIAL();              SCHECK_PARTIAL();
3488              break;              break;
3489              }              }
3490            if (fc != md->lcc[*eptr]) break;            if (fc != *eptr && foc != *eptr) break;
3491            eptr++;            eptr++;
3492            }            }
3493    
# Line 3248  for (;;) Line 3499  for (;;)
3499            eptr--;            eptr--;
3500            if (rrc != MATCH_NOMATCH) RRETURN(rrc);            if (rrc != MATCH_NOMATCH) RRETURN(rrc);
3501            }            }
3502          MRRETURN(MATCH_NOMATCH);          RRETURN(MATCH_NOMATCH);
3503          }          }
3504        /* Control never gets here */        /* Control never gets here */
3505        }        }
# Line 3262  for (;;) Line 3513  for (;;)
3513          if (eptr >= md->end_subject)          if (eptr >= md->end_subject)
3514            {            {
3515            SCHECK_PARTIAL();            SCHECK_PARTIAL();
3516            MRRETURN(MATCH_NOMATCH);            RRETURN(MATCH_NOMATCH);
3517            }            }
3518          if (fc != *eptr++) MRRETURN(MATCH_NOMATCH);          if (fc != *eptr++) RRETURN(MATCH_NOMATCH);
3519          }          }
3520    
3521        if (min == max) continue;        if (min == max) continue;
# Line 3275  for (;;) Line 3526  for (;;)
3526            {            {
3527            RMATCH(eptr, ecode, offset_top, md, eptrb, RM26);            RMATCH(eptr, ecode, offset_top, md, eptrb, RM26);
3528            if (rrc != MATCH_NOMATCH) RRETURN(rrc);            if (rrc != MATCH_NOMATCH) RRETURN(rrc);
3529            if (fi >= max) MRRETURN(MATCH_NOMATCH);            if (fi >= max) RRETURN(MATCH_NOMATCH);
3530            if (eptr >= md->end_subject)            if (eptr >= md->end_subject)
3531              {              {
3532              SCHECK_PARTIAL();              SCHECK_PARTIAL();
3533              MRRETURN(MATCH_NOMATCH);              RRETURN(MATCH_NOMATCH);
3534              }              }
3535            if (fc != *eptr++) MRRETURN(MATCH_NOMATCH);            if (fc != *eptr++) RRETURN(MATCH_NOMATCH);
3536            }            }
3537          /* Control never gets here */          /* Control never gets here */
3538          }          }
# Line 3306  for (;;) Line 3557  for (;;)
3557            eptr--;            eptr--;
3558            if (rrc != MATCH_NOMATCH) RRETURN(rrc);            if (rrc != MATCH_NOMATCH) RRETURN(rrc);
3559            }            }
3560          MRRETURN(MATCH_NOMATCH);          RRETURN(MATCH_NOMATCH);
3561          }          }
3562        }        }
3563      /* Control never gets here */      /* Control never gets here */
# Line 3315  for (;;) Line 3566  for (;;)
3566      checking can be multibyte. */      checking can be multibyte. */
3567    
3568      case OP_NOT:      case OP_NOT:
3569      case OP_NOTI:      case OP_NOTI:
3570      if (eptr >= md->end_subject)      if (eptr >= md->end_subject)
3571        {        {
3572        SCHECK_PARTIAL();        SCHECK_PARTIAL();
3573        MRRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
3574        }        }
3575      ecode++;  #ifdef SUPPORT_UTF
3576      GETCHARINCTEST(c, eptr);      if (utf)
     if (op == OP_NOTI)         /* The caseless case */  
3577        {        {
3578  #ifdef SUPPORT_UTF8        register unsigned int ch, och;
3579        if (c < 256)  
3580  #endif        ecode++;
3581        c = md->lcc[c];        GETCHARINC(ch, ecode);
3582        if (md->lcc[*ecode++] == c) MRRETURN(MATCH_NOMATCH);        GETCHARINC(c, eptr);
3583    
3584          if (op == OP_NOT)
3585            {
3586            if (ch == c) RRETURN(MATCH_NOMATCH);
3587            }
3588          else
3589            {
3590    #ifdef SUPPORT_UCP
3591            if (ch > 127)
3592              och = UCD_OTHERCASE(ch);
3593    #else
3594            if (ch > 127)
3595              och = ch;
3596    #endif /* SUPPORT_UCP */
3597            else
3598              och = TABLE_GET(ch, md->fcc, ch);
3599            if (ch == c || och == c) RRETURN(MATCH_NOMATCH);
3600            }
3601        }        }
3602      else    /* Caseful */      else
3603    #endif
3604        {        {
3605        if (*ecode++ == c) MRRETURN(MATCH_NOMATCH);        register unsigned int ch = ecode[1];
3606          c = *eptr++;
3607          if (ch == c || (op == OP_NOTI && TABLE_GET(ch, md->fcc, ch) == c))
3608            RRETURN(MATCH_NOMATCH);
3609          ecode += 2;
3610        }        }
3611      break;      break;
3612    
# Line 3347  for (;;) Line 3620  for (;;)
3620      case OP_NOTEXACT:      case OP_NOTEXACT:
3621      case OP_NOTEXACTI:      case OP_NOTEXACTI:
3622      min = max = GET2(ecode, 1);      min = max = GET2(ecode, 1);
3623      ecode += 3;      ecode += 1 + IMM2_SIZE;
3624      goto REPEATNOTCHAR;      goto REPEATNOTCHAR;
3625    
3626      case OP_NOTUPTO:      case OP_NOTUPTO:
# Line 3357  for (;;) Line 3630  for (;;)
3630      min = 0;      min = 0;
3631      max = GET2(ecode, 1);      max = GET2(ecode, 1);
3632      minimize = *ecode == OP_NOTMINUPTO || *ecode == OP_NOTMINUPTOI;      minimize = *ecode == OP_NOTMINUPTO || *ecode == OP_NOTMINUPTOI;
3633      ecode += 3;      ecode += 1 + IMM2_SIZE;
3634      goto REPEATNOTCHAR;      goto REPEATNOTCHAR;
3635    
3636      case OP_NOTPOSSTAR:      case OP_NOTPOSSTAR:
# Line 3389  for (;;) Line 3662  for (;;)
3662      possessive = TRUE;      possessive = TRUE;
3663      min = 0;      min = 0;
3664      max = GET2(ecode, 1);      max = GET2(ecode, 1);
3665      ecode += 3;      ecode += 1 + IMM2_SIZE;
3666      goto REPEATNOTCHAR;      goto REPEATNOTCHAR;
3667    
3668      case OP_NOTSTAR:      case OP_NOTSTAR:
# Line 3413  for (;;) Line 3686  for (;;)
3686      /* Common code for all repeated single-byte matches. */      /* Common code for all repeated single-byte matches. */
3687    
3688      REPEATNOTCHAR:      REPEATNOTCHAR:
3689      fc = *ecode++;      GETCHARINCTEST(fc, ecode);
3690    
3691      /* The code is duplicated for the caseless and caseful cases, for speed,      /* The code is duplicated for the caseless and caseful cases, for speed,
3692      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 3424  for (;;) Line 3697  for (;;)
3697      characters and work backwards. */      characters and work backwards. */
3698    
3699      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,
3700        max, eptr));        max, (char *)eptr));
3701    
3702      if (op >= OP_NOTSTARI)     /* Caseless */      if (op >= OP_NOTSTARI)     /* Caseless */
3703        {        {
3704        fc = md->lcc[fc];  #ifdef SUPPORT_UTF
3705    #ifdef SUPPORT_UCP
3706          if (utf && fc > 127)
3707            foc = UCD_OTHERCASE(fc);
3708    #else
3709          if (utf && fc > 127)
3710            foc = fc;
3711    #endif /* SUPPORT_UCP */
3712          else
3713    #endif /* SUPPORT_UTF */
3714            foc = TABLE_GET(fc, md->fcc, fc);
3715    
3716  #ifdef SUPPORT_UTF8  #ifdef SUPPORT_UTF
3717        /* UTF-8 mode */        if (utf)
       if (utf8)  
3718          {          {
3719          register unsigned int d;          register unsigned int d;
3720          for (i = 1; i <= min; i++)          for (i = 1; i <= min; i++)
# Line 3440  for (;;) Line 3722  for (;;)
3722            if (eptr >= md->end_subject)            if (eptr >= md->end_subject)
3723              {              {
3724              SCHECK_PARTIAL();              SCHECK_PARTIAL();
3725              MRRETURN(MATCH_NOMATCH);              RRETURN(MATCH_NOMATCH);
3726              }              }
3727            GETCHARINC(d, eptr);            GETCHARINC(d, eptr);
3728            if (d < 256) d = md->lcc[d];            if (fc == d || (unsigned int)foc == d) RRETURN(MATCH_NOMATCH);
           if (fc == d) MRRETURN(MATCH_NOMATCH);  
3729            }            }
3730          }          }
3731        else        else
3732  #endif  #endif
3733          /* Not UTF mode */
       /* Not UTF-8 mode */  
3734          {          {
3735          for (i = 1; i <= min; i++)          for (i = 1; i <= min; i++)
3736            {            {
3737            if (eptr >= md->end_subject)            if (eptr >= md->end_subject)
3738              {              {
3739              SCHECK_PARTIAL();              SCHECK_PARTIAL();
3740              MRRETURN(MATCH_NOMATCH);              RRETURN(MATCH_NOMATCH);
3741              }              }
3742            if (fc == md->lcc[*eptr++]) MRRETURN(MATCH_NOMATCH);            if (fc == *eptr || foc == *eptr) RRETURN(MATCH_NOMATCH);
3743              eptr++;
3744            }            }
3745          }          }
3746    
# Line 3467  for (;;) Line 3748  for (;;)
3748    
3749        if (minimize)        if (minimize)
3750          {          {
3751  #ifdef SUPPORT_UTF8  #ifdef SUPPORT_UTF
3752          /* UTF-8 mode */          if (utf)
         if (utf8)  
3753            {            {
3754            register unsigned int d;            register unsigned int d;
3755            for (fi = min;; fi++)            for (fi = min;; fi++)
3756              {              {
3757              RMATCH(eptr, ecode, offset_top, md, eptrb, RM28);              RMATCH(eptr, ecode, offset_top, md, eptrb, RM28);
3758              if (rrc != MATCH_NOMATCH) RRETURN(rrc);              if (rrc != MATCH_NOMATCH) RRETURN(rrc);
3759              if (fi >= max) MRRETURN(MATCH_NOMATCH);              if (fi >= max) RRETURN(MATCH_NOMATCH);
3760              if (eptr >= md->end_subject)              if (eptr >= md->end_subject)
3761                {                {
3762                SCHECK_PARTIAL();                SCHECK_PARTIAL();
3763                MRRETURN(MATCH_NOMATCH);                RRETURN(MATCH_NOMATCH);
3764                }                }
3765              GETCHARINC(d, eptr);              GETCHARINC(d, eptr);
3766              if (d < 256) d = md->lcc[d];              if (fc == d || (unsigned int)foc == d) RRETURN(MATCH_NOMATCH);
             if (fc == d) MRRETURN(MATCH_NOMATCH);  
3767              }              }
3768            }            }
3769          else          else
3770  #endif  #endif
3771          /* Not UTF-8 mode */          /* Not UTF mode */
3772            {            {
3773            for (fi = min;; fi++)            for (fi = min;; fi++)
3774              {              {
3775              RMATCH(eptr, ecode, offset_top, md, eptrb, RM29);              RMATCH(eptr, ecode, offset_top, md, eptrb, RM29);
3776              if (rrc != MATCH_NOMATCH) RRETURN(rrc);              if (rrc != MATCH_NOMATCH) RRETURN(rrc);
3777              if (fi >= max) MRRETURN(MATCH_NOMATCH);              if (fi >= max) RRETURN(MATCH_NOMATCH);
3778              if (eptr >= md->end_subject)              if (eptr >= md->end_subject)
3779                {                {
3780                SCHECK_PARTIAL();                SCHECK_PARTIAL();
3781                MRRETURN(MATCH_NOMATCH);                RRETURN(MATCH_NOMATCH);
3782                }                }
3783              if (fc == md->lcc[*eptr++]) MRRETURN(MATCH_NOMATCH);              if (fc == *eptr || foc == *eptr) RRETURN(MATCH_NOMATCH);
3784                eptr++;
3785              }              }
3786            }            }
3787          /* Control never gets here */          /* Control never gets here */
# Line 3513  for (;;) Line 3793  for (;;)
3793          {          {
3794          pp = eptr;          pp = eptr;
3795    
3796  #ifdef SUPPORT_UTF8  #ifdef SUPPORT_UTF
3797          /* UTF-8 mode */          if (utf)
         if (utf8)  
3798            {            {
3799            register unsigned int d;            register unsigned int d;
3800            for (i = min; i < max; i++)            for (i = min; i < max; i++)
# Line 3527  for (;;) Line 3806  for (;;)
3806                break;                break;
3807                }                }
3808              GETCHARLEN(d, eptr, len);              GETCHARLEN(d, eptr, len);
3809              if (d < 256) d = md->lcc[d];              if (fc == d || (unsigned int)foc == d) break;
             if (fc == d) break;  
3810              eptr += len;              eptr += len;
3811              }              }
3812          if (possessive) continue;            if (possessive) continue;
3813          for(;;)            for(;;)
3814              {              {
3815              RMATCH(eptr, ecode, offset_top, md, eptrb, RM30);              RMATCH(eptr, ecode, offset_top, md, eptrb, RM30);
3816              if (rrc != MATCH_NOMATCH) RRETURN(rrc);              if (rrc != MATCH_NOMATCH) RRETURN(rrc);
# Line 3542  for (;;) Line 3820  for (;;)
3820            }            }
3821          else          else
3822  #endif  #endif
3823          /* Not UTF-8 mode */          /* Not UTF mode */
3824            {            {
3825            for (i = min; i < max; i++)            for (i = min; i < max; i++)
3826              {              {
# Line 3551  for (;;) Line 3829  for (;;)
3829                SCHECK_PARTIAL();                SCHECK_PARTIAL();
3830                break;                break;
3831                }                }
3832              if (fc == md->lcc[*eptr]) break;              if (fc == *eptr || foc == *eptr) break;
3833              eptr++;              eptr++;
3834              }              }
3835            if (possessive) continue;            if (possessive) continue;
# Line 3563  for (;;) Line 3841  for (;;)
3841              }              }
3842            }            }
3843    
3844          MRRETURN(MATCH_NOMATCH);          RRETURN(MATCH_NOMATCH);
3845          }          }
3846        /* Control never gets here */        /* Control never gets here */
3847        }        }
# Line 3572  for (;;) Line 3850  for (;;)
3850    
3851      else      else
3852        {        {
3853  #ifdef SUPPORT_UTF8  #ifdef SUPPORT_UTF
3854        /* UTF-8 mode */        if (utf)
       if (utf8)  
3855          {          {
3856          register unsigned int d;          register unsigned int d;
3857          for (i = 1; i <= min; i++)          for (i = 1; i <= min; i++)
# Line 3582  for (;;) Line 3859  for (;;)
3859            if (eptr >= md->end_subject)            if (eptr >= md->end_subject)
3860              {              {
3861              SCHECK_PARTIAL();              SCHECK_PARTIAL();
3862              MRRETURN(MATCH_NOMATCH);              RRETURN(MATCH_NOMATCH);
3863              }              }
3864            GETCHARINC(d, eptr);            GETCHARINC(d, eptr);
3865            if (fc == d) MRRETURN(MATCH_NOMATCH);            if (fc == d) RRETURN(MATCH_NOMATCH);
3866            }            }
3867          }          }
3868        else        else
3869  #endif  #endif
3870        /* Not UTF-8 mode */        /* Not UTF mode */
3871          {          {
3872          for (i = 1; i <= min; i++)          for (i = 1; i <= min; i++)
3873            {            {
3874            if (eptr >= md->end_subject)            if (eptr >= md->end_subject)
3875              {              {
3876              SCHECK_PARTIAL();              SCHECK_PARTIAL();
3877              MRRETURN(MATCH_NOMATCH);              RRETURN(MATCH_NOMATCH);
3878              }              }
3879            if (fc == *eptr++) MRRETURN(MATCH_NOMATCH);            if (fc == *eptr++) RRETURN(MATCH_NOMATCH);
3880            }            }
3881          }          }
3882    
# Line 3607  for (;;) Line 3884  for (;;)
3884    
3885        if (minimize)        if (minimize)
3886          {          {
3887  #ifdef SUPPORT_UTF8  #ifdef SUPPORT_UTF
3888          /* UTF-8 mode */          if (utf)
         if (utf8)  
3889            {            {
3890            register unsigned int d;            register unsigned int d;
3891            for (fi = min;; fi++)            for (fi = min;; fi++)
3892              {              {
3893              RMATCH(eptr, ecode, offset_top, md, eptrb, RM32);              RMATCH(eptr, ecode, offset_top, md, eptrb, RM32);
3894              if (rrc != MATCH_NOMATCH) RRETURN(rrc);              if (rrc != MATCH_NOMATCH) RRETURN(rrc);
3895              if (fi >= max) MRRETURN(MATCH_NOMATCH);              if (fi >= max) RRETURN(MATCH_NOMATCH);
3896              if (eptr >= md->end_subject)              if (eptr >= md->end_subject)
3897                {                {
3898                SCHECK_PARTIAL();                SCHECK_PARTIAL();
3899                MRRETURN(MATCH_NOMATCH);                RRETURN(MATCH_NOMATCH);
3900                }                }
3901              GETCHARINC(d, eptr);              GETCHARINC(d, eptr);
3902              if (fc == d) MRRETURN(MATCH_NOMATCH);              if (fc == d) RRETURN(MATCH_NOMATCH);
3903              }              }
3904            }            }
3905          else          else
3906  #endif  #endif
3907          /* Not UTF-8 mode */          /* Not UTF mode */
3908            {            {
3909            for (fi = min;; fi++)            for (fi = min;; fi++)
3910              {              {
3911              RMATCH(eptr, ecode, offset_top, md, eptrb, RM33);              RMATCH(eptr, ecode, offset_top, md, eptrb, RM33);
3912              if (rrc != MATCH_NOMATCH) RRETURN(rrc);              if (rrc != MATCH_NOMATCH) RRETURN(rrc);
3913              if (fi >= max) MRRETURN(MATCH_NOMATCH);              if (fi >= max) RRETURN(MATCH_NOMATCH);
3914              if (eptr >= md->end_subject)              if (eptr >= md->end_subject)
3915                {                {
3916                SCHECK_PARTIAL();                SCHECK_PARTIAL();
3917                MRRETURN(MATCH_NOMATCH);                RRETURN(MATCH_NOMATCH);
3918                }                }
3919              if (fc == *eptr++) MRRETURN(MATCH_NOMATCH);              if (fc == *eptr++) RRETURN(MATCH_NOMATCH);
3920              }              }
3921            }            }
3922          /* Control never gets here */          /* Control never gets here */
# Line 3652  for (;;) Line 3928  for (;;)
3928          {          {
3929          pp = eptr;          pp = eptr;
3930    
3931  #ifdef SUPPORT_UTF8  #ifdef SUPPORT_UTF
3932          /* UTF-8 mode */          if (utf)
         if (utf8)  
3933            {            {
3934            register unsigned int d;            register unsigned int d;
3935            for (i = min; i < max; i++)            for (i = min; i < max; i++)
# Line 3680  for (;;) Line 3955  for (;;)
3955            }            }
3956          else          else
3957  #endif  #endif
3958          /* Not UTF-8 mode */          /* Not UTF mode */
3959            {            {
3960            for (i = min; i < max; i++)            for (i = min; i < max; i++)
3961              {              {
# Line 3701  for (;;) Line 3976  for (;;)
3976              }              }
3977            }            }
3978    
3979          MRRETURN(MATCH_NOMATCH);          RRETURN(MATCH_NOMATCH);
3980          }          }
3981        }        }
3982      /* Control never gets here */      /* Control never gets here */
# Line 3713  for (;;) Line 3988  for (;;)
3988      case OP_TYPEEXACT:      case OP_TYPEEXACT:
3989      min = max = GET2(ecode, 1);      min = max = GET2(ecode, 1);
3990      minimize = TRUE;      minimize = TRUE;
3991      ecode += 3;      ecode += 1 + IMM2_SIZE;
3992      goto REPEATTYPE;      goto REPEATTYPE;
3993    
3994      case OP_TYPEUPTO:      case OP_TYPEUPTO:
# Line 3721  for (;;) Line 3996  for (;;)
3996      min = 0;      min = 0;
3997      max = GET2(ecode, 1);      max = GET2(ecode, 1);
3998      minimize = *ecode == OP_TYPEMINUPTO;      minimize = *ecode == OP_TYPEMINUPTO;
3999      ecode += 3;      ecode += 1 + IMM2_SIZE;
4000      goto REPEATTYPE;      goto REPEATTYPE;
4001    
4002      case OP_TYPEPOSSTAR:      case OP_TYPEPOSSTAR:
# Line 3749  for (;;) Line 4024  for (;;)
4024      possessive = TRUE;      possessive = TRUE;
4025      min = 0;      min = 0;
4026      max = GET2(ecode, 1);      max = GET2(ecode, 1);
4027      ecode += 3;      ecode += 1 + IMM2_SIZE;
4028      goto REPEATTYPE;      goto REPEATTYPE;
4029    
4030      case OP_TYPESTAR:      case OP_TYPESTAR:
# Line 3795  for (;;) Line 4070  for (;;)
4070          switch(prop_type)          switch(prop_type)
4071            {            {
4072            case PT_ANY:            case PT_ANY:
4073            if (prop_fail_result) MRRETURN(MATCH_NOMATCH);            if (prop_fail_result) RRETURN(MATCH_NOMATCH);
4074            for (i = 1; i <= min; i++)            for (i = 1; i <= min; i++)
4075              {              {
4076              if (eptr >= md->end_subject)              if (eptr >= md->end_subject)
4077                {                {
4078                SCHECK_PARTIAL();                SCHECK_PARTIAL();
4079                MRRETURN(MATCH_NOMATCH);                RRETURN(MATCH_NOMATCH);
4080                }                }
4081              GETCHARINCTEST(c, eptr);              GETCHARINCTEST(c, eptr);
4082              }              }
# Line 3810  for (;;) Line 4085  for (;;)
4085            case PT_LAMP:            case PT_LAMP:
4086            for (i = 1; i <= min; i++)            for (i = 1; i <= min; i++)
4087              {              {
4088                int chartype;
4089              if (eptr >= md->end_subject)              if (eptr >= md->end_subject)
4090                {                {
4091                SCHECK_PARTIAL();                SCHECK_PARTIAL();
4092                MRRETURN(MATCH_NOMATCH);                RRETURN(MATCH_NOMATCH);
4093                }                }
4094              GETCHARINCTEST(c, eptr);              GETCHARINCTEST(c, eptr);
4095              prop_chartype = UCD_CHARTYPE(c);              chartype = UCD_CHARTYPE(c);
4096              if ((prop_chartype == ucp_Lu ||              if ((chartype == ucp_Lu ||
4097                   prop_chartype == ucp_Ll ||                   chartype == ucp_Ll ||
4098                   prop_chartype == ucp_Lt) == prop_fail_result)                   chartype == ucp_Lt) == prop_fail_result)
4099                MRRETURN(MATCH_NOMATCH);