/[pcre]/code/trunk/pcre_exec.c
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revision 91 by nigel, Sat Feb 24 21:41:34 2007 UTC revision 361 by ph10, Thu Jul 10 16:03:28 2008 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) 1997-2006 University of Cambridge             Copyright (c) 1997-2008 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 42  POSSIBILITY OF SUCH DAMAGE. Line 42  POSSIBILITY OF SUCH DAMAGE.
42  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
43  possible. There are also some static supporting functions. */  possible. There are also some static supporting functions. */
44    
45  #define NLBLOCK md           /* The block containing newline information */  #ifdef HAVE_CONFIG_H
46    #include "config.h"
47    #endif
48    
49    #define NLBLOCK md             /* Block containing newline information */
50    #define PSSTART start_subject  /* Field containing processed string start */
51    #define PSEND   end_subject    /* Field containing processed string end */
52    
53  #include "pcre_internal.h"  #include "pcre_internal.h"
54    
55    /* Undefine some potentially clashing cpp symbols */
56    
57  /* Structure for building a chain of data that actually lives on the  #undef min
58  stack, for holding the values of the subject pointer at the start of each  #undef max
 subpattern, so as to detect when an empty string has been matched by a  
 subpattern - to break infinite loops. When NO_RECURSE is set, these blocks  
 are on the heap, not on the stack. */  
   
 typedef struct eptrblock {  
   struct eptrblock *epb_prev;  
   USPTR epb_saved_eptr;  
 } eptrblock;  
59    
60  /* Flag bits for the match() function */  /* Flag bits for the match() function */
61    
62  #define match_condassert   0x01    /* Called to check a condition assertion */  #define match_condassert     0x01  /* Called to check a condition assertion */
63  #define match_isgroup      0x02    /* Set if start of bracketed group */  #define match_cbegroup       0x02  /* Could-be-empty unlimited repeat group */
64    
65  /* Non-error returns from the match() function. Error returns are externally  /* Non-error returns from the match() function. Error returns are externally
66  defined PCRE_ERROR_xxx codes, which are all negative. */  defined PCRE_ERROR_xxx codes, which are all negative. */
# Line 68  defined PCRE_ERROR_xxx codes, which are Line 68  defined PCRE_ERROR_xxx codes, which are
68  #define MATCH_MATCH        1  #define MATCH_MATCH        1
69  #define MATCH_NOMATCH      0  #define MATCH_NOMATCH      0
70    
71    /* Special internal returns from the match() function. Make them sufficiently
72    negative to avoid the external error codes. */
73    
74    #define MATCH_COMMIT       (-999)
75    #define MATCH_PRUNE        (-998)
76    #define MATCH_SKIP         (-997)
77    #define MATCH_THEN         (-996)
78    
79  /* 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.
80  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,
81  because the offset vector is always a multiple of 3 long. */  because the offset vector is always a multiple of 3 long. */
# Line 101  Returns:     nothing Line 109  Returns:     nothing
109  static void  static void
110  pchars(const uschar *p, int length, BOOL is_subject, match_data *md)  pchars(const uschar *p, int length, BOOL is_subject, match_data *md)
111  {  {
112  int c;  unsigned int c;
113  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;
114  while (length-- > 0)  while (length-- > 0)
115    if (isprint(c = *(p++))) printf("%c", c); else printf("\\x%02x", c);    if (isprint(c = *(p++))) printf("%c", c); else printf("\\x%02x", c);
# Line 150  printf("\n"); Line 158  printf("\n");
158    
159  if (length > md->end_subject - eptr) return FALSE;  if (length > md->end_subject - eptr) return FALSE;
160    
161  /* Separate the caselesss case for speed */  /* Separate the caseless case for speed. In UTF-8 mode we can only do this
162    properly if Unicode properties are supported. Otherwise, we can check only
163    ASCII characters. */
164    
165  if ((ims & PCRE_CASELESS) != 0)  if ((ims & PCRE_CASELESS) != 0)
166    {    {
167    #ifdef SUPPORT_UTF8
168    #ifdef SUPPORT_UCP
169      if (md->utf8)
170        {
171        USPTR endptr = eptr + length;
172        while (eptr < endptr)
173          {
174          int c, d;
175          GETCHARINC(c, eptr);
176          GETCHARINC(d, p);
177          if (c != d && c != UCD_OTHERCASE(d)) return FALSE;
178          }
179        }
180      else
181    #endif
182    #endif
183    
184      /* The same code works when not in UTF-8 mode and in UTF-8 mode when there
185      is no UCP support. */
186    
187    while (length-- > 0)    while (length-- > 0)
188      if (md->lcc[*p++] != md->lcc[*eptr++]) return FALSE;      { if (md->lcc[*p++] != md->lcc[*eptr++]) return FALSE; }
189    }    }
190    
191    /* In the caseful case, we can just compare the bytes, whether or not we
192    are in UTF-8 mode. */
193    
194  else  else
195    { while (length-- > 0) if (*p++ != *eptr++) return FALSE; }    { while (length-- > 0) if (*p++ != *eptr++) return FALSE; }
196    
# Line 186  calls by keeping local variables that ne Line 220  calls by keeping local variables that ne
220  obtained from malloc() instead instead of on the stack. Macros are used to  obtained from malloc() instead instead of on the stack. Macros are used to
221  achieve this so that the actual code doesn't look very different to what it  achieve this so that the actual code doesn't look very different to what it
222  always used to.  always used to.
223    
224    The original heap-recursive code used longjmp(). However, it seems that this
225    can be very slow on some operating systems. Following a suggestion from Stan
226    Switzer, the use of longjmp() has been abolished, at the cost of having to
227    provide a unique number for each call to RMATCH. There is no way of generating
228    a sequence of numbers at compile time in C. I have given them names, to make
229    them stand out more clearly.
230    
231    Crude tests on x86 Linux show a small speedup of around 5-8%. However, on
232    FreeBSD, avoiding longjmp() more than halves the time taken to run the standard
233    tests. Furthermore, not using longjmp() means that local dynamic variables
234    don't have indeterminate values; this has meant that the frame size can be
235    reduced because the result can be "passed back" by straight setting of the
236    variable instead of being passed in the frame.
237  ****************************************************************************  ****************************************************************************
238  ***************************************************************************/  ***************************************************************************/
239    
240    /* Numbers for RMATCH calls. When this list is changed, the code at HEAP_RETURN
241    below must be updated in sync.  */
242    
243    enum { RM1=1, RM2,  RM3,  RM4,  RM5,  RM6,  RM7,  RM8,  RM9,  RM10,
244           RM11,  RM12, RM13, RM14, RM15, RM16, RM17, RM18, RM19, RM20,
245           RM21,  RM22, RM23, RM24, RM25, RM26, RM27, RM28, RM29, RM30,
246           RM31,  RM32, RM33, RM34, RM35, RM36, RM37, RM38, RM39, RM40,
247           RM41,  RM42, RM43, RM44, RM45, RM46, RM47, RM48, RM49, RM50,
248           RM51,  RM52, RM53, RM54 };
249    
250  /* 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
251  versions and production versions. */  versions and production versions. Note that the "rw" argument of RMATCH isn't
252    actuall used in this definition. */
253    
254  #ifndef NO_RECURSE  #ifndef NO_RECURSE
255  #define REGISTER register  #define REGISTER register
256    
257  #ifdef DEBUG  #ifdef DEBUG
258  #define RMATCH(rx,ra,rb,rc,rd,re,rf,rg) \  #define RMATCH(ra,rb,rc,rd,re,rf,rg,rw) \
259    { \    { \
260    printf("match() called in line %d\n", __LINE__); \    printf("match() called in line %d\n", __LINE__); \
261    rx = match(ra,rb,rc,rd,re,rf,rg,rdepth+1); \    rrc = match(ra,rb,mstart,rc,rd,re,rf,rg,rdepth+1); \
262    printf("to line %d\n", __LINE__); \    printf("to line %d\n", __LINE__); \
263    }    }
264  #define RRETURN(ra) \  #define RRETURN(ra) \
# Line 208  versions and production versions. */ Line 267  versions and production versions. */
267    return ra; \    return ra; \
268    }    }
269  #else  #else
270  #define RMATCH(rx,ra,rb,rc,rd,re,rf,rg) \  #define RMATCH(ra,rb,rc,rd,re,rf,rg,rw) \
271    rx = match(ra,rb,rc,rd,re,rf,rg,rdepth+1)    rrc = match(ra,rb,mstart,rc,rd,re,rf,rg,rdepth+1)
272  #define RRETURN(ra) return ra  #define RRETURN(ra) return ra
273  #endif  #endif
274    
275  #else  #else
276    
277    
278  /* These versions of the macros manage a private stack on the heap. Note  /* These versions of the macros manage a private stack on the heap. Note that
279  that the rd argument of RMATCH isn't actually used. It's the md argument of  the "rd" argument of RMATCH isn't actually used in this definition. It's the md
280  match(), which never changes. */  argument of match(), which never changes. */
281    
282  #define REGISTER  #define REGISTER
283    
284  #define RMATCH(rx,ra,rb,rc,rd,re,rf,rg)\  #define RMATCH(ra,rb,rc,rd,re,rf,rg,rw)\
285    {\    {\
286    heapframe *newframe = (pcre_stack_malloc)(sizeof(heapframe));\    heapframe *newframe = (pcre_stack_malloc)(sizeof(heapframe));\
287    if (setjmp(frame->Xwhere) == 0)\    frame->Xwhere = rw; \
288      {\    newframe->Xeptr = ra;\
289      newframe->Xeptr = ra;\    newframe->Xecode = rb;\
290      newframe->Xecode = rb;\    newframe->Xmstart = mstart;\
291      newframe->Xoffset_top = rc;\    newframe->Xoffset_top = rc;\
292      newframe->Xims = re;\    newframe->Xims = re;\
293      newframe->Xeptrb = rf;\    newframe->Xeptrb = rf;\
294      newframe->Xflags = rg;\    newframe->Xflags = rg;\
295      newframe->Xrdepth = frame->Xrdepth + 1;\    newframe->Xrdepth = frame->Xrdepth + 1;\
296      newframe->Xprevframe = frame;\    newframe->Xprevframe = frame;\
297      frame = newframe;\    frame = newframe;\
298      DPRINTF(("restarting from line %d\n", __LINE__));\    DPRINTF(("restarting from line %d\n", __LINE__));\
299      goto HEAP_RECURSE;\    goto HEAP_RECURSE;\
300      }\    L_##rw:\
301    else\    DPRINTF(("jumped back to line %d\n", __LINE__));\
     {\  
     DPRINTF(("longjumped back to line %d\n", __LINE__));\  
     frame = md->thisframe;\  
     rx = frame->Xresult;\  
     }\  
302    }    }
303    
304  #define RRETURN(ra)\  #define RRETURN(ra)\
# Line 254  match(), which never changes. */ Line 308  match(), which never changes. */
308    (pcre_stack_free)(newframe);\    (pcre_stack_free)(newframe);\
309    if (frame != NULL)\    if (frame != NULL)\
310      {\      {\
311      frame->Xresult = ra;\      rrc = ra;\
312      md->thisframe = frame;\      goto HEAP_RETURN;\
     longjmp(frame->Xwhere, 1);\  
313      }\      }\
314    return ra;\    return ra;\
315    }    }
# Line 271  typedef struct heapframe { Line 324  typedef struct heapframe {
324    
325    const uschar *Xeptr;    const uschar *Xeptr;
326    const uschar *Xecode;    const uschar *Xecode;
327      const uschar *Xmstart;
328    int Xoffset_top;    int Xoffset_top;
329    long int Xims;    long int Xims;
330    eptrblock *Xeptrb;    eptrblock *Xeptrb;
# Line 291  typedef struct heapframe { Line 345  typedef struct heapframe {
345    
346    BOOL Xcur_is_word;    BOOL Xcur_is_word;
347    BOOL Xcondition;    BOOL Xcondition;
   BOOL Xminimize;  
348    BOOL Xprev_is_word;    BOOL Xprev_is_word;
349    
350    unsigned long int Xoriginal_ims;    unsigned long int Xoriginal_ims;
# Line 303  typedef struct heapframe { Line 356  typedef struct heapframe {
356    int Xprop_category;    int Xprop_category;
357    int Xprop_chartype;    int Xprop_chartype;
358    int Xprop_script;    int Xprop_script;
359    int *Xprop_test_variable;    int Xoclength;
360      uschar Xocchars[8];
361  #endif  #endif
362    
363    int Xctype;    int Xctype;
364    int Xfc;    unsigned int Xfc;
365    int Xfi;    int Xfi;
366    int Xlength;    int Xlength;
367    int Xmax;    int Xmax;
# Line 321  typedef struct heapframe { Line 375  typedef struct heapframe {
375    
376    eptrblock Xnewptrb;    eptrblock Xnewptrb;
377    
378    /* Place to pass back result, and where to jump back to */    /* Where to jump back to */
379    
380    int  Xresult;    int Xwhere;
   jmp_buf Xwhere;  
381    
382  } heapframe;  } heapframe;
383    
# Line 340  typedef struct heapframe { Line 393  typedef struct heapframe {
393  *         Match from current position            *  *         Match from current position            *
394  *************************************************/  *************************************************/
395    
396  /* On entry ecode points to the first opcode, and eptr to the first character  /* This function is called recursively in many circumstances. Whenever it
 in the subject string, while eptrb holds the value of eptr at the start of the  
 last bracketed group - used for breaking infinite loops matching zero-length  
 strings. This function is called recursively in many circumstances. Whenever it  
397  returns a negative (error) response, the outer incarnation must also return the  returns a negative (error) response, the outer incarnation must also return the
398  same response.  same response.
399    
# Line 353  performance. Tests using gcc on a SPARC Line 403  performance. Tests using gcc on a SPARC
403  made performance worse.  made performance worse.
404    
405  Arguments:  Arguments:
406     eptr        pointer in subject     eptr        pointer to current character in subject
407     ecode       position in code     ecode       pointer to current position in compiled code
408       mstart      pointer to the current match start position (can be modified
409                     by encountering \K)
410     offset_top  current top pointer     offset_top  current top pointer
411     md          pointer to "static" info for the match     md          pointer to "static" info for the match
412     ims         current /i, /m, and /s options     ims         current /i, /m, and /s options
# Line 362  Arguments: Line 414  Arguments:
414                   brackets - for testing for empty matches                   brackets - for testing for empty matches
415     flags       can contain     flags       can contain
416                   match_condassert - this is an assertion condition                   match_condassert - this is an assertion condition
417                   match_isgroup - this is the start of a bracketed group                   match_cbegroup - this is the start of an unlimited repeat
418                       group that can match an empty string
419     rdepth      the recursion depth     rdepth      the recursion depth
420    
421  Returns:       MATCH_MATCH if matched            )  these values are >= 0  Returns:       MATCH_MATCH if matched            )  these values are >= 0
# Line 372  Returns:       MATCH_MATCH if matched Line 425  Returns:       MATCH_MATCH if matched
425  */  */
426    
427  static int  static int
428  match(REGISTER USPTR eptr, REGISTER const uschar *ecode,  match(REGISTER USPTR eptr, REGISTER const uschar *ecode, const uschar *mstart,
429    int offset_top, match_data *md, unsigned long int ims, eptrblock *eptrb,    int offset_top, match_data *md, unsigned long int ims, eptrblock *eptrb,
430    int flags, unsigned int rdepth)    int flags, unsigned int rdepth)
431  {  {
432  /* 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,
433  so they can be ordinary variables in all cases. Mark them with "register"  so they can be ordinary variables in all cases. Mark some of them with
434  because they are used a lot in loops. */  "register" because they are used a lot in loops. */
435    
436  register int  rrc;         /* Returns from recursive calls */  register int  rrc;         /* Returns from recursive calls */
437  register int  i;           /* Used for loops not involving calls to RMATCH() */  register int  i;           /* Used for loops not involving calls to RMATCH() */
438  register unsigned int  c;  /* Character values not kept over RMATCH() calls */  register unsigned int c;   /* Character values not kept over RMATCH() calls */
439  register BOOL utf8;        /* Local copy of UTF-8 flag for speed */  register BOOL utf8;        /* Local copy of UTF-8 flag for speed */
440    
441    BOOL minimize, possessive; /* Quantifier options */
442    
443  /* 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
444  preserved over calls to RMATCH() are part of a "frame" which is obtained from  preserved over calls to RMATCH() are part of a "frame" which is obtained from
445  heap storage. Set up the top-level frame here; others are obtained from the  heap storage. Set up the top-level frame here; others are obtained from the
# Line 398  frame->Xprevframe = NULL;            /* Line 453  frame->Xprevframe = NULL;            /*
453    
454  frame->Xeptr = eptr;  frame->Xeptr = eptr;
455  frame->Xecode = ecode;  frame->Xecode = ecode;
456    frame->Xmstart = mstart;
457  frame->Xoffset_top = offset_top;  frame->Xoffset_top = offset_top;
458  frame->Xims = ims;  frame->Xims = ims;
459  frame->Xeptrb = eptrb;  frame->Xeptrb = eptrb;
# Line 412  HEAP_RECURSE: Line 468  HEAP_RECURSE:
468    
469  #define eptr               frame->Xeptr  #define eptr               frame->Xeptr
470  #define ecode              frame->Xecode  #define ecode              frame->Xecode
471    #define mstart             frame->Xmstart
472  #define offset_top         frame->Xoffset_top  #define offset_top         frame->Xoffset_top
473  #define ims                frame->Xims  #define ims                frame->Xims
474  #define eptrb              frame->Xeptrb  #define eptrb              frame->Xeptrb
# Line 434  HEAP_RECURSE: Line 491  HEAP_RECURSE:
491    
492  #define cur_is_word        frame->Xcur_is_word  #define cur_is_word        frame->Xcur_is_word
493  #define condition          frame->Xcondition  #define condition          frame->Xcondition
 #define minimize           frame->Xminimize  
494  #define prev_is_word       frame->Xprev_is_word  #define prev_is_word       frame->Xprev_is_word
495    
496  #define original_ims       frame->Xoriginal_ims  #define original_ims       frame->Xoriginal_ims
# Line 446  HEAP_RECURSE: Line 502  HEAP_RECURSE:
502  #define prop_category      frame->Xprop_category  #define prop_category      frame->Xprop_category
503  #define prop_chartype      frame->Xprop_chartype  #define prop_chartype      frame->Xprop_chartype
504  #define prop_script        frame->Xprop_script  #define prop_script        frame->Xprop_script
505  #define prop_test_variable frame->Xprop_test_variable  #define oclength           frame->Xoclength
506    #define occhars            frame->Xocchars
507  #endif  #endif
508    
509  #define ctype              frame->Xctype  #define ctype              frame->Xctype
# Line 470  HEAP_RECURSE: Line 527  HEAP_RECURSE:
527  get preserved during recursion in the normal way. In this environment, fi and  get preserved during recursion in the normal way. In this environment, fi and
528  i, and fc and c, can be the same variables. */  i, and fc and c, can be the same variables. */
529    
530  #else  #else         /* NO_RECURSE not defined */
531  #define fi i  #define fi i
532  #define fc c  #define fc c
533    
# Line 489  recursion_info new_recursive;      /* wi Line 546  recursion_info new_recursive;      /* wi
546                                     /* that do not have to be preserved over  */                                     /* that do not have to be preserved over  */
547  BOOL cur_is_word;                  /* a recursive call to RMATCH().          */  BOOL cur_is_word;                  /* a recursive call to RMATCH().          */
548  BOOL condition;  BOOL condition;
 BOOL minimize;  
549  BOOL prev_is_word;  BOOL prev_is_word;
550    
551  unsigned long int original_ims;  unsigned long int original_ims;
# Line 501  int prop_fail_result; Line 557  int prop_fail_result;
557  int prop_category;  int prop_category;
558  int prop_chartype;  int prop_chartype;
559  int prop_script;  int prop_script;
560  int *prop_test_variable;  int oclength;
561    uschar occhars[8];
562  #endif  #endif
563    
564  int ctype;  int ctype;
# Line 516  int save_offset1, save_offset2, save_off Line 573  int save_offset1, save_offset2, save_off
573  int stacksave[REC_STACK_SAVE_MAX];  int stacksave[REC_STACK_SAVE_MAX];
574    
575  eptrblock newptrb;  eptrblock newptrb;
576  #endif  #endif     /* NO_RECURSE */
577    
578  /* These statements are here to stop the compiler complaining about unitialized  /* These statements are here to stop the compiler complaining about unitialized
579  variables. */  variables. */
# Line 524  variables. */ Line 581  variables. */
581  #ifdef SUPPORT_UCP  #ifdef SUPPORT_UCP
582  prop_value = 0;  prop_value = 0;
583  prop_fail_result = 0;  prop_fail_result = 0;
 prop_test_variable = NULL;  
584  #endif  #endif
585    
586    
587  /* This label is used for tail recursion, which is used in a few cases even  /* This label is used for tail recursion, which is used in a few cases even
588  when NO_RECURSE is not defined, in order to reduce the amount of stack that is  when NO_RECURSE is not defined, in order to reduce the amount of stack that is
589  used. Thanks to Ian Taylor for noticing this possibility and sending the  used. Thanks to Ian Taylor for noticing this possibility and sending the
# Line 542  defined). However, RMATCH isn't like a f Line 599  defined). However, RMATCH isn't like a f
599  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,
600  however, impact performance when true recursion is being used. */  however, impact performance when true recursion is being used. */
601    
602    #ifdef SUPPORT_UTF8
603    utf8 = md->utf8;       /* Local copy of the flag */
604    #else
605    utf8 = FALSE;
606    #endif
607    
608  /* 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
609  haven't exceeded the recursive call limit. */  haven't exceeded the recursive call limit. */
610    
# Line 550  if (rdepth >= md->match_limit_recursion) Line 613  if (rdepth >= md->match_limit_recursion)
613    
614  original_ims = ims;    /* Save for resetting on ')' */  original_ims = ims;    /* Save for resetting on ')' */
615    
616  #ifdef SUPPORT_UTF8  /* At the start of a group with an unlimited repeat that may match an empty
617  utf8 = md->utf8;       /* Local copy of the flag */  string, the match_cbegroup flag is set. When this is the case, add the current
618  #else  subject pointer to the chain of such remembered pointers, to be checked when we
619  utf8 = FALSE;  hit the closing ket, in order to break infinite loops that match no characters.
620  #endif  When match() is called in other circumstances, don't add to the chain. The
621    match_cbegroup flag must NOT be used with tail recursion, because the memory
622  /* At the start of a bracketed group, add the current subject pointer to the  block that is used is on the stack, so a new one may be required for each
623  stack of such pointers, to be re-instated at the end of the group when we hit  match(). */
 the closing ket. When match() is called in other circumstances, we don't add to  
 this stack. */  
624    
625  if ((flags & match_isgroup) != 0)  if ((flags & match_cbegroup) != 0)
626    {    {
   newptrb.epb_prev = eptrb;  
627    newptrb.epb_saved_eptr = eptr;    newptrb.epb_saved_eptr = eptr;
628      newptrb.epb_prev = eptrb;
629    eptrb = &newptrb;    eptrb = &newptrb;
630    }    }
631    
632  /* Now start processing the operations. */  /* Now start processing the opcodes. */
633    
634  for (;;)  for (;;)
635    {    {
636      minimize = possessive = FALSE;
637    op = *ecode;    op = *ecode;
   minimize = FALSE;  
638    
639    /* For partial matching, remember if we ever hit the end of the subject after    /* For partial matching, remember if we ever hit the end of the subject after
640    matching at least one subject character. */    matching at least one subject character. */
641    
642    if (md->partial &&    if (md->partial &&
643        eptr >= md->end_subject &&        eptr >= md->end_subject &&
644        eptr > md->start_match)        eptr > mstart)
645      md->hitend = TRUE;      md->hitend = TRUE;
646    
647    /* Opening capturing bracket. If there is space in the offset vector, save    switch(op)
   the current subject position in the working slot at the top of the vector. We  
   mustn't change the current values of the data slot, because they may be set  
   from a previous iteration of this group, and be referred to by a reference  
   inside the group.  
   
   If the bracket fails to match, we need to restore this value and also the  
   values of the final offsets, in case they were set by a previous iteration of  
   the same bracket.  
   
   If there isn't enough space in the offset vector, treat this as if it were a  
   non-capturing bracket. Don't worry about setting the flag for the error case  
   here; that is handled in the code for KET. */  
   
   if (op > OP_BRA)  
648      {      {
649      number = op - OP_BRA;      case OP_FAIL:
650        RRETURN(MATCH_NOMATCH);
     /* For extended extraction brackets (large number), we have to fish out the  
     number from a dummy opcode at the start. */  
651    
652      if (number > EXTRACT_BASIC_MAX)      case OP_PRUNE:
653        number = GET2(ecode, 2+LINK_SIZE);      RMATCH(eptr, ecode + _pcre_OP_lengths[*ecode], offset_top, md,
654          ims, eptrb, flags, RM51);
655        if (rrc != MATCH_NOMATCH) RRETURN(rrc);
656        RRETURN(MATCH_PRUNE);
657    
658        case OP_COMMIT:
659        RMATCH(eptr, ecode + _pcre_OP_lengths[*ecode], offset_top, md,
660          ims, eptrb, flags, RM52);
661        if (rrc != MATCH_NOMATCH) RRETURN(rrc);
662        RRETURN(MATCH_COMMIT);
663    
664        case OP_SKIP:
665        RMATCH(eptr, ecode + _pcre_OP_lengths[*ecode], offset_top, md,
666          ims, eptrb, flags, RM53);
667        if (rrc != MATCH_NOMATCH) RRETURN(rrc);
668        md->start_match_ptr = eptr;   /* Pass back current position */
669        RRETURN(MATCH_SKIP);
670    
671        case OP_THEN:
672        RMATCH(eptr, ecode + _pcre_OP_lengths[*ecode], offset_top, md,
673          ims, eptrb, flags, RM54);
674        if (rrc != MATCH_NOMATCH) RRETURN(rrc);
675        RRETURN(MATCH_THEN);
676    
677        /* Handle a capturing bracket. If there is space in the offset vector, save
678        the current subject position in the working slot at the top of the vector.
679        We mustn't change the current values of the data slot, because they may be
680        set from a previous iteration of this group, and be referred to by a
681        reference inside the group.
682    
683        If the bracket fails to match, we need to restore this value and also the
684        values of the final offsets, in case they were set by a previous iteration
685        of the same bracket.
686    
687        If there isn't enough space in the offset vector, treat this as if it were
688        a non-capturing bracket. Don't worry about setting the flag for the error
689        case here; that is handled in the code for KET. */
690    
691        case OP_CBRA:
692        case OP_SCBRA:
693        number = GET2(ecode, 1+LINK_SIZE);
694      offset = number << 1;      offset = number << 1;
695    
696  #ifdef DEBUG  #ifdef DEBUG
697      printf("start bracket %d subject=", number);      printf("start bracket %d\n", number);
698        printf("subject=");
699      pchars(eptr, 16, TRUE, md);      pchars(eptr, 16, TRUE, md);
700      printf("\n");      printf("\n");
701  #endif  #endif
# Line 624  for (;;) Line 710  for (;;)
710        DPRINTF(("saving %d %d %d\n", save_offset1, save_offset2, save_offset3));        DPRINTF(("saving %d %d %d\n", save_offset1, save_offset2, save_offset3));
711        md->offset_vector[md->offset_end - number] = eptr - md->start_subject;        md->offset_vector[md->offset_end - number] = eptr - md->start_subject;
712    
713          flags = (op == OP_SCBRA)? match_cbegroup : 0;
714        do        do
715          {          {
716          RMATCH(rrc, eptr, ecode + 1 + LINK_SIZE, offset_top, md, ims, eptrb,          RMATCH(eptr, ecode + _pcre_OP_lengths[*ecode], offset_top, md,
717            match_isgroup);            ims, eptrb, flags, RM1);
718          if (rrc != MATCH_NOMATCH) RRETURN(rrc);          if (rrc != MATCH_NOMATCH && rrc != MATCH_THEN) RRETURN(rrc);
719          md->capture_last = save_capture_last;          md->capture_last = save_capture_last;
720          ecode += GET(ecode, 1);          ecode += GET(ecode, 1);
721          }          }
# Line 643  for (;;) Line 730  for (;;)
730        RRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
731        }        }
732    
733      /* Insufficient room for saving captured contents */      /* FALL THROUGH ... Insufficient room for saving captured contents. Treat
734        as a non-capturing bracket. */
735    
736      else op = OP_BRA;      /* VVVVVVVVVVVVVVVVVVVVVVVVV */
737      }      /* VVVVVVVVVVVVVVVVVVVVVVVVV */
   
   /* Other types of node can be handled by a switch */  
   
   switch(op)  
     {  
     case OP_BRA:     /* Non-capturing bracket: optimized */  
     DPRINTF(("start bracket 0\n"));  
738    
739      /* Loop for all the alternatives */      DPRINTF(("insufficient capture room: treat as non-capturing\n"));
740    
741        /* VVVVVVVVVVVVVVVVVVVVVVVVV */
742        /* VVVVVVVVVVVVVVVVVVVVVVVVV */
743    
744        /* Non-capturing bracket. Loop for all the alternatives. When we get to the
745        final alternative within the brackets, we would return the result of a
746        recursive call to match() whatever happened. We can reduce stack usage by
747        turning this into a tail recursion, except in the case when match_cbegroup
748        is set.*/
749    
750        case OP_BRA:
751        case OP_SBRA:
752        DPRINTF(("start non-capturing bracket\n"));
753        flags = (op >= OP_SBRA)? match_cbegroup : 0;
754      for (;;)      for (;;)
755        {        {
756        /* When we get to the final alternative within the brackets, we would        if (ecode[GET(ecode, 1)] != OP_ALT)   /* Final alternative */
757        return the result of a recursive call to match() whatever happened. We          {
758        can reduce stack usage by turning this into a tail recursion. */          if (flags == 0)    /* Not a possibly empty group */
759              {
760        if (ecode[GET(ecode, 1)] != OP_ALT)            ecode += _pcre_OP_lengths[*ecode];
761         {            DPRINTF(("bracket 0 tail recursion\n"));
762         ecode += 1 + LINK_SIZE;            goto TAIL_RECURSE;
763         flags = match_isgroup;            }
764         DPRINTF(("bracket 0 tail recursion\n"));  
765         goto TAIL_RECURSE;          /* Possibly empty group; can't use tail recursion. */
766         }  
767            RMATCH(eptr, ecode + _pcre_OP_lengths[*ecode], offset_top, md, ims,
768              eptrb, flags, RM48);
769            RRETURN(rrc);
770            }
771    
772        /* For non-final alternatives, continue the loop for a NOMATCH result;        /* For non-final alternatives, continue the loop for a NOMATCH result;
773        otherwise return. */        otherwise return. */
774    
775        RMATCH(rrc, eptr, ecode + 1 + LINK_SIZE, offset_top, md, ims, eptrb,        RMATCH(eptr, ecode + _pcre_OP_lengths[*ecode], offset_top, md, ims,
776          match_isgroup);          eptrb, flags, RM2);
777        if (rrc != MATCH_NOMATCH) RRETURN(rrc);        if (rrc != MATCH_NOMATCH && rrc != MATCH_THEN) RRETURN(rrc);
778        ecode += GET(ecode, 1);        ecode += GET(ecode, 1);
779        }        }
780      /* Control never reaches here. */      /* Control never reaches here. */
# Line 688  for (;;) Line 786  for (;;)
786      obeyed, we can use tail recursion to avoid using another stack frame. */      obeyed, we can use tail recursion to avoid using another stack frame. */
787    
788      case OP_COND:      case OP_COND:
789      if (ecode[LINK_SIZE+1] == OP_CREF) /* Condition extract or recurse test */      case OP_SCOND:
790        if (ecode[LINK_SIZE+1] == OP_RREF)         /* Recursion test */
791          {
792          offset = GET2(ecode, LINK_SIZE + 2);     /* Recursion group number*/
793          condition = md->recursive != NULL &&
794            (offset == RREF_ANY || offset == md->recursive->group_num);
795          ecode += condition? 3 : GET(ecode, 1);
796          }
797    
798        else if (ecode[LINK_SIZE+1] == OP_CREF)    /* Group used test */
799        {        {
800        offset = GET2(ecode, LINK_SIZE+2) << 1;  /* Doubled ref number */        offset = GET2(ecode, LINK_SIZE+2) << 1;  /* Doubled ref number */
801        condition = (offset == CREF_RECURSE * 2)?        condition = offset < offset_top && md->offset_vector[offset] >= 0;
802          (md->recursive != NULL) :        ecode += condition? 3 : GET(ecode, 1);
803          (offset < offset_top && md->offset_vector[offset] >= 0);        }
804        ecode += condition? (LINK_SIZE + 4) : (LINK_SIZE + 1 + GET(ecode, 1));  
805        flags = match_isgroup;      else if (ecode[LINK_SIZE+1] == OP_DEF)     /* DEFINE - always false */
806        goto TAIL_RECURSE;        {
807          condition = FALSE;
808          ecode += GET(ecode, 1);
809        }        }
810    
811      /* The condition is an assertion. Call match() to evaluate it - setting      /* The condition is an assertion. Call match() to evaluate it - setting
812      the final argument TRUE causes it to stop at the end of an assertion. */      the final argument match_condassert causes it to stop at the end of an
813        assertion. */
814    
815      else      else
816        {        {
817        RMATCH(rrc, eptr, ecode + 1 + LINK_SIZE, offset_top, md, ims, NULL,        RMATCH(eptr, ecode + 1 + LINK_SIZE, offset_top, md, ims, NULL,
818            match_condassert | match_isgroup);            match_condassert, RM3);
819        if (rrc == MATCH_MATCH)        if (rrc == MATCH_MATCH)
820          {          {
821          ecode += 1 + LINK_SIZE + GET(ecode, LINK_SIZE+2);          condition = TRUE;
822            ecode += 1 + LINK_SIZE + GET(ecode, LINK_SIZE + 2);
823          while (*ecode == OP_ALT) ecode += GET(ecode, 1);          while (*ecode == OP_ALT) ecode += GET(ecode, 1);
824          }          }
825        else if (rrc != MATCH_NOMATCH)        else if (rrc != MATCH_NOMATCH && rrc != MATCH_THEN)
826          {          {
827          RRETURN(rrc);         /* Need braces because of following else */          RRETURN(rrc);         /* Need braces because of following else */
828          }          }
829        else ecode += GET(ecode, 1);        else
830            {
831            condition = FALSE;
832            ecode += GET(ecode, 1);
833            }
834          }
835    
836        /* 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,
837        we can use tail recursion to avoid using another stack frame. */      we can use tail recursion to avoid using another stack frame, except when
838        match_cbegroup is required for an unlimited repeat of a possibly empty
839        group. If the second alternative doesn't exist, we can just plough on. */
840    
841        if (condition || *ecode == OP_ALT)
842          {
843          ecode += 1 + LINK_SIZE;
844          if (op == OP_SCOND)        /* Possibly empty group */
845            {
846            RMATCH(eptr, ecode, offset_top, md, ims, eptrb, match_cbegroup, RM49);
847            RRETURN(rrc);
848            }
849          else                       /* Group must match something */
850            {
851            flags = 0;
852            goto TAIL_RECURSE;
853            }
854          }
855        else                         /* Condition false & no 2nd alternative */
856          {
857        ecode += 1 + LINK_SIZE;        ecode += 1 + LINK_SIZE;
       flags = match_isgroup;  
       goto TAIL_RECURSE;  
858        }        }
     /* Control never reaches here */  
   
     /* Skip over conditional reference or large extraction number data if  
     encountered. */  
   
     case OP_CREF:  
     case OP_BRANUMBER:  
     ecode += 3;  
859      break;      break;
860    
     /* End of the pattern. If we are in a recursion, we should restore the  
     offsets appropriately and continue from after the call. */  
861    
862        /* End of the pattern, either real or forced. If we are in a top-level
863        recursion, we should restore the offsets appropriately and continue from
864        after the call. */
865    
866        case OP_ACCEPT:
867      case OP_END:      case OP_END:
868      if (md->recursive != NULL && md->recursive->group_num == 0)      if (md->recursive != NULL && md->recursive->group_num == 0)
869        {        {
# Line 745  for (;;) Line 872  for (;;)
872        md->recursive = rec->prevrec;        md->recursive = rec->prevrec;
873        memmove(md->offset_vector, rec->offset_save,        memmove(md->offset_vector, rec->offset_save,
874          rec->saved_max * sizeof(int));          rec->saved_max * sizeof(int));
875        md->start_match = rec->save_start;        mstart = rec->save_start;
876        ims = original_ims;        ims = original_ims;
877        ecode = rec->after_call;        ecode = rec->after_call;
878        break;        break;
# Line 754  for (;;) Line 881  for (;;)
881      /* Otherwise, if PCRE_NOTEMPTY is set, fail if we have matched an empty      /* Otherwise, if PCRE_NOTEMPTY is set, fail if we have matched an empty
882      string - backtracking will then try other alternatives, if any. */      string - backtracking will then try other alternatives, if any. */
883    
884      if (md->notempty && eptr == md->start_match) RRETURN(MATCH_NOMATCH);      if (md->notempty && eptr == mstart) RRETURN(MATCH_NOMATCH);
885      md->end_match_ptr = eptr;          /* Record where we ended */      md->end_match_ptr = eptr;           /* Record where we ended */
886      md->end_offset_top = offset_top;   /* and how many extracts were taken */      md->end_offset_top = offset_top;    /* and how many extracts were taken */
887        md->start_match_ptr = mstart;       /* and the start (\K can modify) */
888      RRETURN(MATCH_MATCH);      RRETURN(MATCH_MATCH);
889    
890      /* Change option settings */      /* Change option settings */
# Line 777  for (;;) Line 905  for (;;)
905      case OP_ASSERTBACK:      case OP_ASSERTBACK:
906      do      do
907        {        {
908        RMATCH(rrc, eptr, ecode + 1 + LINK_SIZE, offset_top, md, ims, NULL,        RMATCH(eptr, ecode + 1 + LINK_SIZE, offset_top, md, ims, NULL, 0,
909          match_isgroup);          RM4);
910        if (rrc == MATCH_MATCH) break;        if (rrc == MATCH_MATCH) break;
911        if (rrc != MATCH_NOMATCH) RRETURN(rrc);        if (rrc != MATCH_NOMATCH && rrc != MATCH_THEN) RRETURN(rrc);
912        ecode += GET(ecode, 1);        ecode += GET(ecode, 1);
913        }        }
914      while (*ecode == OP_ALT);      while (*ecode == OP_ALT);
# Line 804  for (;;) Line 932  for (;;)
932      case OP_ASSERTBACK_NOT:      case OP_ASSERTBACK_NOT:
933      do      do
934        {        {
935        RMATCH(rrc, eptr, ecode + 1 + LINK_SIZE, offset_top, md, ims, NULL,        RMATCH(eptr, ecode + 1 + LINK_SIZE, offset_top, md, ims, NULL, 0,
936          match_isgroup);          RM5);
937        if (rrc == MATCH_MATCH) RRETURN(MATCH_NOMATCH);        if (rrc == MATCH_MATCH) RRETURN(MATCH_NOMATCH);
938        if (rrc != MATCH_NOMATCH) RRETURN(rrc);        if (rrc != MATCH_NOMATCH && rrc != MATCH_THEN) RRETURN(rrc);
939        ecode += GET(ecode,1);        ecode += GET(ecode,1);
940        }        }
941      while (*ecode == OP_ALT);      while (*ecode == OP_ALT);
# Line 826  for (;;) Line 954  for (;;)
954  #ifdef SUPPORT_UTF8  #ifdef SUPPORT_UTF8
955      if (utf8)      if (utf8)
956        {        {
957        c = GET(ecode,1);        i = GET(ecode, 1);
958        for (i = 0; i < c; i++)        while (i-- > 0)
959          {          {
960          eptr--;          eptr--;
961          if (eptr < md->start_subject) RRETURN(MATCH_NOMATCH);          if (eptr < md->start_subject) RRETURN(MATCH_NOMATCH);
962          BACKCHAR(eptr)          BACKCHAR(eptr);
963          }          }
964        }        }
965      else      else
# Line 840  for (;;) Line 968  for (;;)
968      /* No UTF-8 support, or not in UTF-8 mode: count is byte count */      /* No UTF-8 support, or not in UTF-8 mode: count is byte count */
969    
970        {        {
971        eptr -= GET(ecode,1);        eptr -= GET(ecode, 1);
972        if (eptr < md->start_subject) RRETURN(MATCH_NOMATCH);        if (eptr < md->start_subject) RRETURN(MATCH_NOMATCH);
973        }        }
974    
# Line 862  for (;;) Line 990  for (;;)
990        cb.offset_vector    = md->offset_vector;        cb.offset_vector    = md->offset_vector;
991        cb.subject          = (PCRE_SPTR)md->start_subject;        cb.subject          = (PCRE_SPTR)md->start_subject;
992        cb.subject_length   = md->end_subject - md->start_subject;        cb.subject_length   = md->end_subject - md->start_subject;
993        cb.start_match      = md->start_match - md->start_subject;        cb.start_match      = mstart - md->start_subject;
994        cb.current_position = eptr - md->start_subject;        cb.current_position = eptr - md->start_subject;
995        cb.pattern_position = GET(ecode, 2);        cb.pattern_position = GET(ecode, 2);
996        cb.next_item_length = GET(ecode, 2 + LINK_SIZE);        cb.next_item_length = GET(ecode, 2 + LINK_SIZE);
# Line 897  for (;;) Line 1025  for (;;)
1025      case OP_RECURSE:      case OP_RECURSE:
1026        {        {
1027        callpat = md->start_code + GET(ecode, 1);        callpat = md->start_code + GET(ecode, 1);
1028        new_recursive.group_num = *callpat - OP_BRA;        new_recursive.group_num = (callpat == md->start_code)? 0 :
1029            GET2(callpat, 1 + LINK_SIZE);
       /* For extended extraction brackets (large number), we have to fish out  
       the number from a dummy opcode at the start. */  
   
       if (new_recursive.group_num > EXTRACT_BASIC_MAX)  
         new_recursive.group_num = GET2(callpat, 2+LINK_SIZE);  
1030    
1031        /* Add to "recursing stack" */        /* Add to "recursing stack" */
1032    
# Line 929  for (;;) Line 1052  for (;;)
1052    
1053        memcpy(new_recursive.offset_save, md->offset_vector,        memcpy(new_recursive.offset_save, md->offset_vector,
1054              new_recursive.saved_max * sizeof(int));              new_recursive.saved_max * sizeof(int));
1055        new_recursive.save_start = md->start_match;        new_recursive.save_start = mstart;
1056        md->start_match = eptr;        mstart = eptr;
1057    
1058        /* OK, now we can do the recursion. For each top-level alternative we        /* OK, now we can do the recursion. For each top-level alternative we
1059        restore the offset and recursion data. */        restore the offset and recursion data. */
1060    
1061        DPRINTF(("Recursing into group %d\n", new_recursive.group_num));        DPRINTF(("Recursing into group %d\n", new_recursive.group_num));
1062          flags = (*callpat >= OP_SBRA)? match_cbegroup : 0;
1063        do        do
1064          {          {
1065          RMATCH(rrc, eptr, callpat + 1 + LINK_SIZE, offset_top, md, ims,          RMATCH(eptr, callpat + _pcre_OP_lengths[*callpat], offset_top,
1066              eptrb, match_isgroup);            md, ims, eptrb, flags, RM6);
1067          if (rrc == MATCH_MATCH)          if (rrc == MATCH_MATCH)
1068            {            {
1069            DPRINTF(("Recursion matched\n"));            DPRINTF(("Recursion matched\n"));
# Line 948  for (;;) Line 1072  for (;;)
1072              (pcre_free)(new_recursive.offset_save);              (pcre_free)(new_recursive.offset_save);
1073            RRETURN(MATCH_MATCH);            RRETURN(MATCH_MATCH);
1074            }            }
1075          else if (rrc != MATCH_NOMATCH)          else if (rrc != MATCH_NOMATCH && rrc != MATCH_THEN)
1076            {            {
1077            DPRINTF(("Recursion gave error %d\n", rrc));            DPRINTF(("Recursion gave error %d\n", rrc));
1078            RRETURN(rrc);            RRETURN(rrc);
# Line 982  for (;;) Line 1106  for (;;)
1106    
1107      do      do
1108        {        {
1109        RMATCH(rrc, eptr, ecode + 1 + LINK_SIZE, offset_top, md, ims,        RMATCH(eptr, ecode + 1 + LINK_SIZE, offset_top, md, ims, eptrb, 0, RM7);
         eptrb, match_isgroup);  
1110        if (rrc == MATCH_MATCH) break;        if (rrc == MATCH_MATCH) break;
1111        if (rrc != MATCH_NOMATCH) RRETURN(rrc);        if (rrc != MATCH_NOMATCH && rrc != MATCH_THEN) RRETURN(rrc);
1112        ecode += GET(ecode,1);        ecode += GET(ecode,1);
1113        }        }
1114      while (*ecode == OP_ALT);      while (*ecode == OP_ALT);
# Line 997  for (;;) Line 1120  for (;;)
1120      /* Continue as from after the assertion, updating the offsets high water      /* Continue as from after the assertion, updating the offsets high water
1121      mark, since extracts may have been taken. */      mark, since extracts may have been taken. */
1122    
1123      do ecode += GET(ecode,1); while (*ecode == OP_ALT);      do ecode += GET(ecode, 1); while (*ecode == OP_ALT);
1124    
1125      offset_top = md->end_offset_top;      offset_top = md->end_offset_top;
1126      eptr = md->end_match_ptr;      eptr = md->end_match_ptr;
# Line 1028  for (;;) Line 1151  for (;;)
1151    
1152      if (*ecode == OP_KETRMIN)      if (*ecode == OP_KETRMIN)
1153        {        {
1154        RMATCH(rrc, eptr, ecode + 1 + LINK_SIZE, offset_top, md, ims, eptrb, 0);        RMATCH(eptr, ecode + 1 + LINK_SIZE, offset_top, md, ims, eptrb, 0, RM8);
1155        if (rrc != MATCH_NOMATCH) RRETURN(rrc);        if (rrc != MATCH_NOMATCH) RRETURN(rrc);
1156        ecode = prev;        ecode = prev;
1157        flags = match_isgroup;        flags = 0;
1158        goto TAIL_RECURSE;        goto TAIL_RECURSE;
1159        }        }
1160      else  /* OP_KETRMAX */      else  /* OP_KETRMAX */
1161        {        {
1162        RMATCH(rrc, eptr, prev, offset_top, md, ims, eptrb, match_isgroup);        RMATCH(eptr, prev, offset_top, md, ims, eptrb, match_cbegroup, RM9);
1163        if (rrc != MATCH_NOMATCH) RRETURN(rrc);        if (rrc != MATCH_NOMATCH) RRETURN(rrc);
1164        ecode += 1 + LINK_SIZE;        ecode += 1 + LINK_SIZE;
1165        flags = 0;        flags = 0;
# Line 1051  for (;;) Line 1174  for (;;)
1174      do ecode += GET(ecode,1); while (*ecode == OP_ALT);      do ecode += GET(ecode,1); while (*ecode == OP_ALT);
1175      break;      break;
1176    
1177      /* BRAZERO and BRAMINZERO occur just before a bracket group, indicating      /* BRAZERO, BRAMINZERO and SKIPZERO occur just before a bracket group,
1178      that it may occur zero times. It may repeat infinitely, or not at all -      indicating that it may occur zero times. It may repeat infinitely, or not
1179      i.e. it could be ()* or ()? in the pattern. Brackets with fixed upper      at all - i.e. it could be ()* or ()? or even (){0} in the pattern. Brackets
1180      repeat limits are compiled as a number of copies, with the optional ones      with fixed upper repeat limits are compiled as a number of copies, with the
1181      preceded by BRAZERO or BRAMINZERO. */      optional ones preceded by BRAZERO or BRAMINZERO. */
1182    
1183      case OP_BRAZERO:      case OP_BRAZERO:
1184        {        {
1185        next = ecode+1;        next = ecode+1;
1186        RMATCH(rrc, eptr, next, offset_top, md, ims, eptrb, match_isgroup);        RMATCH(eptr, next, offset_top, md, ims, eptrb, 0, RM10);
1187        if (rrc != MATCH_NOMATCH) RRETURN(rrc);        if (rrc != MATCH_NOMATCH) RRETURN(rrc);
1188        do next += GET(next,1); while (*next == OP_ALT);        do next += GET(next,1); while (*next == OP_ALT);
1189        ecode = next + 1+LINK_SIZE;        ecode = next + 1 + LINK_SIZE;
1190        }        }
1191      break;      break;
1192    
1193      case OP_BRAMINZERO:      case OP_BRAMINZERO:
1194        {        {
1195        next = ecode+1;        next = ecode+1;
1196        do next += GET(next,1); while (*next == OP_ALT);        do next += GET(next, 1); while (*next == OP_ALT);
1197        RMATCH(rrc, eptr, next + 1+LINK_SIZE, offset_top, md, ims, eptrb,        RMATCH(eptr, next + 1+LINK_SIZE, offset_top, md, ims, eptrb, 0, RM11);
         match_isgroup);  
1198        if (rrc != MATCH_NOMATCH) RRETURN(rrc);        if (rrc != MATCH_NOMATCH) RRETURN(rrc);
1199        ecode++;        ecode++;
1200        }        }
1201      break;      break;
1202    
1203      /* End of a group, repeated or non-repeating. If we are at the end of      case OP_SKIPZERO:
1204      an assertion "group", stop matching and return MATCH_MATCH, but record the        {
1205      current high water mark for use by positive assertions. Do this also        next = ecode+1;
1206      for the "once" (not-backup up) groups. */        do next += GET(next,1); while (*next == OP_ALT);
1207          ecode = next + 1 + LINK_SIZE;
1208          }
1209        break;
1210    
1211        /* End of a group, repeated or non-repeating. */
1212    
1213      case OP_KET:      case OP_KET:
1214      case OP_KETRMIN:      case OP_KETRMIN:
1215      case OP_KETRMAX:      case OP_KETRMAX:
1216      prev = ecode - GET(ecode, 1);      prev = ecode - GET(ecode, 1);
     saved_eptr = eptrb->epb_saved_eptr;  
1217    
1218      /* Back up the stack of bracket start pointers. */      /* If this was a group that remembered the subject start, in order to break
1219        infinite repeats of empty string matches, retrieve the subject start from
1220        the chain. Otherwise, set it NULL. */
1221    
1222        if (*prev >= OP_SBRA)
1223          {
1224          saved_eptr = eptrb->epb_saved_eptr;   /* Value at start of group */
1225          eptrb = eptrb->epb_prev;              /* Backup to previous group */
1226          }
1227        else saved_eptr = NULL;
1228    
1229      eptrb = eptrb->epb_prev;      /* If we are at the end of an assertion group, stop matching and return
1230        MATCH_MATCH, but record the current high water mark for use by positive
1231        assertions. Do this also for the "once" (atomic) groups. */
1232    
1233      if (*prev == OP_ASSERT || *prev == OP_ASSERT_NOT ||      if (*prev == OP_ASSERT || *prev == OP_ASSERT_NOT ||
1234          *prev == OP_ASSERTBACK || *prev == OP_ASSERTBACK_NOT ||          *prev == OP_ASSERTBACK || *prev == OP_ASSERTBACK_NOT ||
# Line 1102  for (;;) Line 1239  for (;;)
1239        RRETURN(MATCH_MATCH);        RRETURN(MATCH_MATCH);
1240        }        }
1241    
1242      /* In all other cases except a conditional group we have to check the      /* For capturing groups we have to check the group number back at the start
1243      group number back at the start and if necessary complete handling an      and if necessary complete handling an extraction by setting the offsets and
1244      extraction by setting the offsets and bumping the high water mark. */      bumping the high water mark. Note that whole-pattern recursion is coded as
1245        a recurse into group 0, so it won't be picked up here. Instead, we catch it
1246        when the OP_END is reached. Other recursion is handled here. */
1247    
1248      if (*prev != OP_COND)      if (*prev == OP_CBRA || *prev == OP_SCBRA)
1249        {        {
1250        number = *prev - OP_BRA;        number = GET2(prev, 1+LINK_SIZE);
   
       /* For extended extraction brackets (large number), we have to fish out  
       the number from a dummy opcode at the start. */  
   
       if (number > EXTRACT_BASIC_MAX) number = GET2(prev, 2+LINK_SIZE);  
1251        offset = number << 1;        offset = number << 1;
1252    
1253  #ifdef DEBUG  #ifdef DEBUG
# Line 1121  for (;;) Line 1255  for (;;)
1255        printf("\n");        printf("\n");
1256  #endif  #endif
1257    
1258        /* Test for a numbered group. This includes groups called as a result        md->capture_last = number;
1259        of recursion. Note that whole-pattern recursion is coded as a recurse        if (offset >= md->offset_max) md->offset_overflow = TRUE; else
       into group 0, so it won't be picked up here. Instead, we catch it when  
       the OP_END is reached. */  
   
       if (number > 0)  
1260          {          {
1261          md->capture_last = number;          md->offset_vector[offset] =
1262          if (offset >= md->offset_max) md->offset_overflow = TRUE; else            md->offset_vector[md->offset_end - number];
1263            {          md->offset_vector[offset+1] = eptr - md->start_subject;
1264            md->offset_vector[offset] =          if (offset_top <= offset) offset_top = offset + 2;
1265              md->offset_vector[md->offset_end - number];          }
1266            md->offset_vector[offset+1] = eptr - md->start_subject;  
1267            if (offset_top <= offset) offset_top = offset + 2;        /* Handle a recursively called group. Restore the offsets
1268            }        appropriately and continue from after the call. */
1269    
1270          /* Handle a recursively called group. Restore the offsets        if (md->recursive != NULL && md->recursive->group_num == number)
1271          appropriately and continue from after the call. */          {
1272            recursion_info *rec = md->recursive;
1273          if (md->recursive != NULL && md->recursive->group_num == number)          DPRINTF(("Recursion (%d) succeeded - continuing\n", number));
1274            {          md->recursive = rec->prevrec;
1275            recursion_info *rec = md->recursive;          mstart = rec->save_start;
1276            DPRINTF(("Recursion (%d) succeeded - continuing\n", number));          memcpy(md->offset_vector, rec->offset_save,
1277            md->recursive = rec->prevrec;            rec->saved_max * sizeof(int));
1278            md->start_match = rec->save_start;          ecode = rec->after_call;
1279            memcpy(md->offset_vector, rec->offset_save,          ims = original_ims;
1280              rec->saved_max * sizeof(int));          break;
           ecode = rec->after_call;  
           ims = original_ims;  
           break;  
           }  
1281          }          }
1282        }        }
1283    
1284      /* Reset the value of the ims flags, in case they got changed during      /* For both capturing and non-capturing groups, reset the value of the ims
1285      the group. */      flags, in case they got changed during the group. */
1286    
1287      ims = original_ims;      ims = original_ims;
1288      DPRINTF(("ims reset to %02lx\n", ims));      DPRINTF(("ims reset to %02lx\n", ims));
# Line 1175  for (;;) Line 1301  for (;;)
1301    
1302      /* The repeating kets try the rest of the pattern or restart from the      /* The repeating kets try the rest of the pattern or restart from the
1303      preceding bracket, in the appropriate order. In the second case, we can use      preceding bracket, in the appropriate order. In the second case, we can use
1304      tail recursion to avoid using another stack frame. */      tail recursion to avoid using another stack frame, unless we have an
1305        unlimited repeat of a group that can match an empty string. */
1306    
1307        flags = (*prev >= OP_SBRA)? match_cbegroup : 0;
1308    
1309      if (*ecode == OP_KETRMIN)      if (*ecode == OP_KETRMIN)
1310        {        {
1311        RMATCH(rrc, eptr, ecode + 1+LINK_SIZE, offset_top, md, ims, eptrb, 0);        RMATCH(eptr, ecode + 1 + LINK_SIZE, offset_top, md, ims, eptrb, 0, RM12);
1312        if (rrc != MATCH_NOMATCH) RRETURN(rrc);        if (rrc != MATCH_NOMATCH) RRETURN(rrc);
1313          if (flags != 0)    /* Could match an empty string */
1314            {
1315            RMATCH(eptr, prev, offset_top, md, ims, eptrb, flags, RM50);
1316            RRETURN(rrc);
1317            }
1318        ecode = prev;        ecode = prev;
       flags = match_isgroup;  
1319        goto TAIL_RECURSE;        goto TAIL_RECURSE;
1320        }        }
1321      else  /* OP_KETRMAX */      else  /* OP_KETRMAX */
1322        {        {
1323        RMATCH(rrc, eptr, prev, offset_top, md, ims, eptrb, match_isgroup);        RMATCH(eptr, prev, offset_top, md, ims, eptrb, flags, RM13);
1324        if (rrc != MATCH_NOMATCH) RRETURN(rrc);        if (rrc != MATCH_NOMATCH) RRETURN(rrc);
1325        ecode += 1 + LINK_SIZE;        ecode += 1 + LINK_SIZE;
1326        flags = 0;        flags = 0;
# Line 1202  for (;;) Line 1335  for (;;)
1335      if ((ims & PCRE_MULTILINE) != 0)      if ((ims & PCRE_MULTILINE) != 0)
1336        {        {
1337        if (eptr != md->start_subject &&        if (eptr != md->start_subject &&
1338            (eptr == md->end_subject ||            (eptr == md->end_subject || !WAS_NEWLINE(eptr)))
            eptr < md->start_subject + md->nllen ||  
            !IS_NEWLINE(eptr - md->nllen)))  
1339          RRETURN(MATCH_NOMATCH);          RRETURN(MATCH_NOMATCH);
1340        ecode++;        ecode++;
1341        break;        break;
# Line 1225  for (;;) Line 1356  for (;;)
1356      ecode++;      ecode++;
1357      break;      break;
1358    
1359        /* Reset the start of match point */
1360    
1361        case OP_SET_SOM:
1362        mstart = eptr;
1363        ecode++;
1364        break;
1365    
1366      /* Assert before internal newline if multiline, or before a terminating      /* Assert before internal newline if multiline, or before a terminating
1367      newline unless endonly is set, else end of subject unless noteol is set. */      newline unless endonly is set, else end of subject unless noteol is set. */
1368    
# Line 1244  for (;;) Line 1382  for (;;)
1382        if (!md->endonly)        if (!md->endonly)
1383          {          {
1384          if (eptr != md->end_subject &&          if (eptr != md->end_subject &&
1385              (eptr != md->end_subject - md->nllen || !IS_NEWLINE(eptr)))              (!IS_NEWLINE(eptr) || eptr != md->end_subject - md->nllen))
1386            RRETURN(MATCH_NOMATCH);            RRETURN(MATCH_NOMATCH);
1387          ecode++;          ecode++;
1388          break;          break;
# Line 1263  for (;;) Line 1401  for (;;)
1401    
1402      case OP_EODN:      case OP_EODN:
1403      if (eptr != md->end_subject &&      if (eptr != md->end_subject &&
1404          (eptr != md->end_subject - md->nllen || !IS_NEWLINE(eptr)))          (!IS_NEWLINE(eptr) || eptr != md->end_subject - md->nllen))
1405        RRETURN(MATCH_NOMATCH);        RRETURN(MATCH_NOMATCH);
1406      ecode++;      ecode++;
1407      break;      break;
# Line 1317  for (;;) Line 1455  for (;;)
1455      /* Match a single character type; inline for speed */      /* Match a single character type; inline for speed */
1456    
1457      case OP_ANY:      case OP_ANY:
1458      if ((ims & PCRE_DOTALL) == 0)      if (IS_NEWLINE(eptr)) RRETURN(MATCH_NOMATCH);
1459        {      /* Fall through */
1460        if (eptr <= md->end_subject - md->nllen && IS_NEWLINE(eptr))  
1461          RRETURN(MATCH_NOMATCH);      case OP_ALLANY:
       }  
1462      if (eptr++ >= md->end_subject) RRETURN(MATCH_NOMATCH);      if (eptr++ >= md->end_subject) RRETURN(MATCH_NOMATCH);
1463      if (utf8)      if (utf8) while (eptr < md->end_subject && (*eptr & 0xc0) == 0x80) eptr++;
       while (eptr < md->end_subject && (*eptr & 0xc0) == 0x80) eptr++;  
1464      ecode++;      ecode++;
1465      break;      break;
1466    
# Line 1414  for (;;) Line 1550  for (;;)
1550      ecode++;      ecode++;
1551      break;      break;
1552    
1553        case OP_ANYNL:
1554        if (eptr >= md->end_subject) RRETURN(MATCH_NOMATCH);
1555        GETCHARINCTEST(c, eptr);
1556        switch(c)
1557          {
1558          default: RRETURN(MATCH_NOMATCH);
1559          case 0x000d:
1560          if (eptr < md->end_subject && *eptr == 0x0a) eptr++;
1561          break;
1562    
1563          case 0x000a:
1564          break;
1565    
1566          case 0x000b:
1567          case 0x000c:
1568          case 0x0085:
1569          case 0x2028:
1570          case 0x2029:
1571          if (md->bsr_anycrlf) RRETURN(MATCH_NOMATCH);
1572          break;
1573          }
1574        ecode++;
1575        break;
1576    
1577        case OP_NOT_HSPACE:
1578        if (eptr >= md->end_subject) RRETURN(MATCH_NOMATCH);
1579        GETCHARINCTEST(c, eptr);
1580        switch(c)
1581          {
1582          default: break;
1583          case 0x09:      /* HT */
1584          case 0x20:      /* SPACE */
1585          case 0xa0:      /* NBSP */
1586          case 0x1680:    /* OGHAM SPACE MARK */
1587          case 0x180e:    /* MONGOLIAN VOWEL SEPARATOR */
1588          case 0x2000:    /* EN QUAD */
1589          case 0x2001:    /* EM QUAD */
1590          case 0x2002:    /* EN SPACE */
1591          case 0x2003:    /* EM SPACE */
1592          case 0x2004:    /* THREE-PER-EM SPACE */
1593          case 0x2005:    /* FOUR-PER-EM SPACE */
1594          case 0x2006:    /* SIX-PER-EM SPACE */
1595          case 0x2007:    /* FIGURE SPACE */
1596          case 0x2008:    /* PUNCTUATION SPACE */
1597          case 0x2009:    /* THIN SPACE */
1598          case 0x200A:    /* HAIR SPACE */
1599          case 0x202f:    /* NARROW NO-BREAK SPACE */
1600          case 0x205f:    /* MEDIUM MATHEMATICAL SPACE */
1601          case 0x3000:    /* IDEOGRAPHIC SPACE */
1602          RRETURN(MATCH_NOMATCH);
1603          }
1604        ecode++;
1605        break;
1606    
1607        case OP_HSPACE:
1608        if (eptr >= md->end_subject) RRETURN(MATCH_NOMATCH);
1609        GETCHARINCTEST(c, eptr);
1610        switch(c)
1611          {
1612          default: RRETURN(MATCH_NOMATCH);
1613          case 0x09:      /* HT */
1614          case 0x20:      /* SPACE */
1615          case 0xa0:      /* NBSP */
1616          case 0x1680:    /* OGHAM SPACE MARK */
1617          case 0x180e:    /* MONGOLIAN VOWEL SEPARATOR */
1618          case 0x2000:    /* EN QUAD */
1619          case 0x2001:    /* EM QUAD */
1620          case 0x2002:    /* EN SPACE */
1621          case 0x2003:    /* EM SPACE */
1622          case 0x2004:    /* THREE-PER-EM SPACE */
1623          case 0x2005:    /* FOUR-PER-EM SPACE */
1624          case 0x2006:    /* SIX-PER-EM SPACE */
1625          case 0x2007:    /* FIGURE SPACE */
1626          case 0x2008:    /* PUNCTUATION SPACE */
1627          case 0x2009:    /* THIN SPACE */
1628          case 0x200A:    /* HAIR SPACE */
1629          case 0x202f:    /* NARROW NO-BREAK SPACE */
1630          case 0x205f:    /* MEDIUM MATHEMATICAL SPACE */
1631          case 0x3000:    /* IDEOGRAPHIC SPACE */
1632          break;
1633          }
1634        ecode++;
1635        break;
1636    
1637        case OP_NOT_VSPACE:
1638        if (eptr >= md->end_subject) RRETURN(MATCH_NOMATCH);
1639        GETCHARINCTEST(c, eptr);
1640        switch(c)
1641          {
1642          default: break;
1643          case 0x0a:      /* LF */
1644          case 0x0b:      /* VT */
1645          case 0x0c:      /* FF */
1646          case 0x0d:      /* CR */
1647          case 0x85:      /* NEL */
1648          case 0x2028:    /* LINE SEPARATOR */
1649          case 0x2029:    /* PARAGRAPH SEPARATOR */
1650          RRETURN(MATCH_NOMATCH);
1651          }
1652        ecode++;
1653        break;
1654    
1655        case OP_VSPACE:
1656        if (eptr >= md->end_subject) RRETURN(MATCH_NOMATCH);
1657        GETCHARINCTEST(c, eptr);
1658        switch(c)
1659          {
1660          default: RRETURN(MATCH_NOMATCH);
1661          case 0x0a:      /* LF */
1662          case 0x0b:      /* VT */
1663          case 0x0c:      /* FF */
1664          case 0x0d:      /* CR */
1665          case 0x85:      /* NEL */
1666          case 0x2028:    /* LINE SEPARATOR */
1667          case 0x2029:    /* PARAGRAPH SEPARATOR */
1668          break;
1669          }
1670        ecode++;
1671        break;
1672    
1673  #ifdef SUPPORT_UCP  #ifdef SUPPORT_UCP
1674      /* Check the next character by Unicode property. We will get here only      /* Check the next character by Unicode property. We will get here only
1675      if the support is in the binary; otherwise a compile-time error occurs. */      if the support is in the binary; otherwise a compile-time error occurs. */
# Line 1423  for (;;) Line 1679  for (;;)
1679      if (eptr >= md->end_subject) RRETURN(MATCH_NOMATCH);      if (eptr >= md->end_subject) RRETURN(MATCH_NOMATCH);
1680      GETCHARINCTEST(c, eptr);      GETCHARINCTEST(c, eptr);
1681        {        {
1682        int chartype, script;        const ucd_record * prop = GET_UCD(c);
       int category = _pcre_ucp_findprop(c, &chartype, &script);  
1683    
1684        switch(ecode[1])        switch(ecode[1])
1685          {          {
# Line 1433  for (;;) Line 1688  for (;;)
1688          break;          break;
1689    
1690          case PT_LAMP:          case PT_LAMP:
1691          if ((chartype == ucp_Lu ||          if ((prop->chartype == ucp_Lu ||
1692               chartype == ucp_Ll ||               prop->chartype == ucp_Ll ||
1693               chartype == ucp_Lt) == (op == OP_NOTPROP))               prop->chartype == ucp_Lt) == (op == OP_NOTPROP))
1694            RRETURN(MATCH_NOMATCH);            RRETURN(MATCH_NOMATCH);
1695           break;           break;
1696    
1697          case PT_GC:          case PT_GC:
1698          if ((ecode[2] != category) == (op == OP_PROP))          if ((ecode[2] != _pcre_ucp_gentype[prop->chartype]) == (op == OP_PROP))
1699            RRETURN(MATCH_NOMATCH);            RRETURN(MATCH_NOMATCH);
1700          break;          break;
1701    
1702          case PT_PC:          case PT_PC:
1703          if ((ecode[2] != chartype) == (op == OP_PROP))          if ((ecode[2] != prop->chartype) == (op == OP_PROP))
1704            RRETURN(MATCH_NOMATCH);            RRETURN(MATCH_NOMATCH);
1705          break;          break;
1706    
1707          case PT_SC:          case PT_SC:
1708          if ((ecode[2] != script) == (op == OP_PROP))          if ((ecode[2] != prop->script) == (op == OP_PROP))
1709            RRETURN(MATCH_NOMATCH);            RRETURN(MATCH_NOMATCH);
1710          break;          break;
1711    
1712          default:          default:
1713          RRETURN(PCRE_ERROR_INTERNAL);          RRETURN(PCRE_ERROR_INTERNAL);
         break;  
1714          }          }
1715    
1716        ecode += 3;        ecode += 3;
# Line 1470  for (;;) Line 1724  for (;;)
1724      if (eptr >= md->end_subject) RRETURN(MATCH_NOMATCH);      if (eptr >= md->end_subject) RRETURN(MATCH_NOMATCH);
1725      GETCHARINCTEST(c, eptr);      GETCHARINCTEST(c, eptr);
1726        {        {
1727        int chartype, script;        int category = UCD_CATEGORY(c);
       int category = _pcre_ucp_findprop(c, &chartype, &script);  
1728        if (category == ucp_M) RRETURN(MATCH_NOMATCH);        if (category == ucp_M) RRETURN(MATCH_NOMATCH);
1729        while (eptr < md->end_subject)        while (eptr < md->end_subject)
1730          {          {
# Line 1480  for (;;) Line 1733  for (;;)
1733            {            {
1734            GETCHARLEN(c, eptr, len);            GETCHARLEN(c, eptr, len);
1735            }            }
1736          category = _pcre_ucp_findprop(c, &chartype, &script);          category = UCD_CATEGORY(c);
1737          if (category != ucp_M) break;          if (category != ucp_M) break;
1738          eptr += len;          eptr += len;
1739          }          }
# Line 1501  for (;;) Line 1754  for (;;)
1754      case OP_REF:      case OP_REF:
1755        {        {
1756        offset = GET2(ecode, 1) << 1;               /* Doubled ref number */        offset = GET2(ecode, 1) << 1;               /* Doubled ref number */
1757        ecode += 3;                                 /* Advance past item */        ecode += 3;
1758    
1759          /* If the reference is unset, there are two possibilities:
1760    
1761          (a) In the default, Perl-compatible state, set the length to be longer
1762          than the amount of subject left; this ensures that every attempt at a
1763          match fails. We can't just fail here, because of the possibility of
1764          quantifiers with zero minima.
1765    
1766          (b) If the JavaScript compatibility flag is set, set the length to zero
1767          so that the back reference matches an empty string.
1768    
1769        /* If the reference is unset, set the length to be longer than the amount        Otherwise, set the length to the length of what was matched by the
1770        of subject left; this ensures that every attempt at a match fails. We        referenced subpattern. */
1771        can't just fail here, because of the possibility of quantifiers with zero  
1772        minima. */        if (offset >= offset_top || md->offset_vector[offset] < 0)
1773            length = (md->jscript_compat)? 0 : md->end_subject - eptr + 1;
1774        length = (offset >= offset_top || md->offset_vector[offset] < 0)?        else
1775          md->end_subject - eptr + 1 :          length = md->offset_vector[offset+1] - md->offset_vector[offset];
         md->offset_vector[offset+1] - md->offset_vector[offset];  
1776    
1777        /* Set up for repetition, or handle the non-repeated case */        /* Set up for repetition, or handle the non-repeated case */
1778    
# Line 1570  for (;;) Line 1832  for (;;)
1832          {          {
1833          for (fi = min;; fi++)          for (fi = min;; fi++)
1834            {            {
1835            RMATCH(rrc, eptr, ecode, offset_top, md, ims, eptrb, 0);            RMATCH(eptr, ecode, offset_top, md, ims, eptrb, 0, RM14);
1836            if (rrc != MATCH_NOMATCH) RRETURN(rrc);            if (rrc != MATCH_NOMATCH) RRETURN(rrc);
1837            if (fi >= max || !match_ref(offset, eptr, length, md, ims))            if (fi >= max || !match_ref(offset, eptr, length, md, ims))
1838              RRETURN(MATCH_NOMATCH);              RRETURN(MATCH_NOMATCH);
# Line 1591  for (;;) Line 1853  for (;;)
1853            }            }
1854          while (eptr >= pp)          while (eptr >= pp)
1855            {            {
1856            RMATCH(rrc, eptr, ecode, offset_top, md, ims, eptrb, 0);            RMATCH(eptr, ecode, offset_top, md, ims, eptrb, 0, RM15);
1857            if (rrc != MATCH_NOMATCH) RRETURN(rrc);            if (rrc != MATCH_NOMATCH) RRETURN(rrc);
1858            eptr -= length;            eptr -= length;
1859            }            }
# Line 1696  for (;;) Line 1958  for (;;)
1958            {            {
1959            for (fi = min;; fi++)            for (fi = min;; fi++)
1960              {              {
1961              RMATCH(rrc, eptr, ecode, offset_top, md, ims, eptrb, 0);              RMATCH(eptr, ecode, offset_top, md, ims, eptrb, 0, RM16);
1962              if (rrc != MATCH_NOMATCH) RRETURN(rrc);              if (rrc != MATCH_NOMATCH) RRETURN(rrc);
1963              if (fi >= max || eptr >= md->end_subject) RRETURN(MATCH_NOMATCH);              if (fi >= max || eptr >= md->end_subject) RRETURN(MATCH_NOMATCH);
1964              GETCHARINC(c, eptr);              GETCHARINC(c, eptr);
# Line 1716  for (;;) Line 1978  for (;;)
1978            {            {
1979            for (fi = min;; fi++)            for (fi = min;; fi++)
1980              {              {
1981              RMATCH(rrc, eptr, ecode, offset_top, md, ims, eptrb, 0);              RMATCH(eptr, ecode, offset_top, md, ims, eptrb, 0, RM17);
1982              if (rrc != MATCH_NOMATCH) RRETURN(rrc);              if (rrc != MATCH_NOMATCH) RRETURN(rrc);
1983              if (fi >= max || eptr >= md->end_subject) RRETURN(MATCH_NOMATCH);              if (fi >= max || eptr >= md->end_subject) RRETURN(MATCH_NOMATCH);
1984              c = *eptr++;              c = *eptr++;
# Line 1753  for (;;) Line 2015  for (;;)
2015              }              }
2016            for (;;)            for (;;)
2017              {              {
2018              RMATCH(rrc, eptr, ecode, offset_top, md, ims, eptrb, 0);              RMATCH(eptr, ecode, offset_top, md, ims, eptrb, 0, RM18);
2019              if (rrc != MATCH_NOMATCH) RRETURN(rrc);              if (rrc != MATCH_NOMATCH) RRETURN(rrc);
2020              if (eptr-- == pp) break;        /* Stop if tried at original pos */              if (eptr-- == pp) break;        /* Stop if tried at original pos */
2021              BACKCHAR(eptr);              BACKCHAR(eptr);
# Line 1772  for (;;) Line 2034  for (;;)
2034              }              }
2035            while (eptr >= pp)            while (eptr >= pp)
2036              {              {
2037              RMATCH(rrc, eptr, ecode, offset_top, md, ims, eptrb, 0);              RMATCH(eptr, ecode, offset_top, md, ims, eptrb, 0, RM19);
2038              if (rrc != MATCH_NOMATCH) RRETURN(rrc);              if (rrc != MATCH_NOMATCH) RRETURN(rrc);
2039              eptr--;              eptr--;
2040              }              }
# Line 1843  for (;;) Line 2105  for (;;)
2105          {          {
2106          for (fi = min;; fi++)          for (fi = min;; fi++)
2107            {            {
2108            RMATCH(rrc, eptr, ecode, offset_top, md, ims, eptrb, 0);            RMATCH(eptr, ecode, offset_top, md, ims, eptrb, 0, RM20);
2109            if (rrc != MATCH_NOMATCH) RRETURN(rrc);            if (rrc != MATCH_NOMATCH) RRETURN(rrc);
2110            if (fi >= max || eptr >= md->end_subject) RRETURN(MATCH_NOMATCH);            if (fi >= max || eptr >= md->end_subject) RRETURN(MATCH_NOMATCH);
2111            GETCHARINC(c, eptr);            GETCHARINC(c, eptr);
# Line 1867  for (;;) Line 2129  for (;;)
2129            }            }
2130          for(;;)          for(;;)
2131            {            {
2132            RMATCH(rrc, eptr, ecode, offset_top, md, ims, eptrb, 0);            RMATCH(eptr, ecode, offset_top, md, ims, eptrb, 0, RM21);
2133            if (rrc != MATCH_NOMATCH) RRETURN(rrc);            if (rrc != MATCH_NOMATCH) RRETURN(rrc);
2134            if (eptr-- == pp) break;        /* Stop if tried at original pos */            if (eptr-- == pp) break;        /* Stop if tried at original pos */
2135            BACKCHAR(eptr)            if (utf8) BACKCHAR(eptr);
2136            }            }
2137          RRETURN(MATCH_NOMATCH);          RRETURN(MATCH_NOMATCH);
2138          }          }
# Line 1926  for (;;) Line 2188  for (;;)
2188    
2189        else        else
2190          {          {
2191          int dc;          unsigned int dc;
2192          GETCHARINC(dc, eptr);          GETCHARINC(dc, eptr);
2193          ecode += length;          ecode += length;
2194    
# Line 1936  for (;;) Line 2198  for (;;)
2198          if (fc != dc)          if (fc != dc)
2199            {            {
2200  #ifdef SUPPORT_UCP  #ifdef SUPPORT_UCP
2201            if (dc != _pcre_ucp_othercase(fc))            if (dc != UCD_OTHERCASE(fc))
2202  #endif  #endif
2203              RRETURN(MATCH_NOMATCH);              RRETURN(MATCH_NOMATCH);
2204            }            }
# Line 1953  for (;;) Line 2215  for (;;)
2215        }        }
2216      break;      break;
2217    
2218      /* Match a single character repeatedly; different opcodes share code. */      /* Match a single character repeatedly. */
2219    
2220      case OP_EXACT:      case OP_EXACT:
2221      min = max = GET2(ecode, 1);      min = max = GET2(ecode, 1);
2222      ecode += 3;      ecode += 3;
2223      goto REPEATCHAR;      goto REPEATCHAR;
2224    
2225        case OP_POSUPTO:
2226        possessive = TRUE;
2227        /* Fall through */
2228    
2229      case OP_UPTO:      case OP_UPTO:
2230      case OP_MINUPTO:      case OP_MINUPTO:
2231      min = 0;      min = 0;
# Line 1968  for (;;) Line 2234  for (;;)
2234      ecode += 3;      ecode += 3;
2235      goto REPEATCHAR;      goto REPEATCHAR;
2236    
2237        case OP_POSSTAR:
2238        possessive = TRUE;
2239        min = 0;
2240        max = INT_MAX;
2241        ecode++;
2242        goto REPEATCHAR;
2243    
2244        case OP_POSPLUS:
2245        possessive = TRUE;
2246        min = 1;
2247        max = INT_MAX;
2248        ecode++;
2249        goto REPEATCHAR;
2250    
2251        case OP_POSQUERY:
2252        possessive = TRUE;
2253        min = 0;
2254        max = 1;
2255        ecode++;
2256        goto REPEATCHAR;
2257    
2258      case OP_STAR:      case OP_STAR:
2259      case OP_MINSTAR:      case OP_MINSTAR:
2260      case OP_PLUS:      case OP_PLUS:
# Line 1999  for (;;) Line 2286  for (;;)
2286    
2287        if (length > 1)        if (length > 1)
2288          {          {
         int oclength = 0;  
         uschar occhars[8];  
   
2289  #ifdef SUPPORT_UCP  #ifdef SUPPORT_UCP
2290          int othercase;          unsigned int othercase;
2291          if ((ims & PCRE_CASELESS) != 0 &&          if ((ims & PCRE_CASELESS) != 0 &&
2292              (othercase = _pcre_ucp_othercase(fc)) >= 0 &&              (othercase = UCD_OTHERCASE(fc)) != fc)
              othercase >= 0)  
2293            oclength = _pcre_ord2utf8(othercase, occhars);            oclength = _pcre_ord2utf8(othercase, occhars);
2294            else oclength = 0;
2295  #endif  /* SUPPORT_UCP */  #endif  /* SUPPORT_UCP */
2296    
2297          for (i = 1; i <= min; i++)          for (i = 1; i <= min; i++)
2298            {            {
2299            if (memcmp(eptr, charptr, length) == 0) eptr += length;            if (memcmp(eptr, charptr, length) == 0) eptr += length;
2300    #ifdef SUPPORT_UCP
2301            /* Need braces because of following else */            /* Need braces because of following else */
2302            else if (oclength == 0) { RRETURN(MATCH_NOMATCH); }            else if (oclength == 0) { RRETURN(MATCH_NOMATCH); }
2303            else            else
# Line 2020  for (;;) Line 2305  for (;;)
2305              if (memcmp(eptr, occhars, oclength) != 0) RRETURN(MATCH_NOMATCH);              if (memcmp(eptr, occhars, oclength) != 0) RRETURN(MATCH_NOMATCH);
2306              eptr += oclength;              eptr += oclength;
2307              }              }
2308    #else   /* without SUPPORT_UCP */
2309              else { RRETURN(MATCH_NOMATCH); }
2310    #endif  /* SUPPORT_UCP */
2311            }            }
2312    
2313          if (min == max) continue;          if (min == max) continue;
# Line 2028  for (;;) Line 2316  for (;;)
2316            {            {
2317            for (fi = min;; fi++)            for (fi = min;; fi++)
2318              {              {
2319              RMATCH(rrc, eptr, ecode, offset_top, md, ims, eptrb, 0);              RMATCH(eptr, ecode, offset_top, md, ims, eptrb, 0, RM22);
2320              if (rrc != MATCH_NOMATCH) RRETURN(rrc);              if (rrc != MATCH_NOMATCH) RRETURN(rrc);
2321              if (fi >= max || eptr >= md->end_subject) RRETURN(MATCH_NOMATCH);              if (fi >= max || eptr >= md->end_subject) RRETURN(MATCH_NOMATCH);
2322              if (memcmp(eptr, charptr, length) == 0) eptr += length;              if (memcmp(eptr, charptr, length) == 0) eptr += length;
2323    #ifdef SUPPORT_UCP
2324              /* Need braces because of following else */              /* Need braces because of following else */
2325              else if (oclength == 0) { RRETURN(MATCH_NOMATCH); }              else if (oclength == 0) { RRETURN(MATCH_NOMATCH); }
2326              else              else
# Line 2039  for (;;) Line 2328  for (;;)
2328                if (memcmp(eptr, occhars, oclength) != 0) RRETURN(MATCH_NOMATCH);                if (memcmp(eptr, occhars, oclength) != 0) RRETURN(MATCH_NOMATCH);
2329                eptr += oclength;                eptr += oclength;
2330                }                }
2331    #else   /* without SUPPORT_UCP */
2332                else { RRETURN (MATCH_NOMATCH); }
2333    #endif  /* SUPPORT_UCP */
2334              }              }
2335            /* Control never gets here */            /* Control never gets here */
2336            }            }
2337          else  
2338            else  /* Maximize */
2339            {            {
2340            pp = eptr;            pp = eptr;
2341            for (i = min; i < max; i++)            for (i = min; i < max; i++)
2342              {              {
2343              if (eptr > md->end_subject - length) break;              if (eptr > md->end_subject - length) break;
2344              if (memcmp(eptr, charptr, length) == 0) eptr += length;              if (memcmp(eptr, charptr, length) == 0) eptr += length;
2345    #ifdef SUPPORT_UCP
2346              else if (oclength == 0) break;              else if (oclength == 0) break;
2347              else              else
2348                {                {
2349                if (memcmp(eptr, occhars, oclength) != 0) break;                if (memcmp(eptr, occhars, oclength) != 0) break;
2350                eptr += oclength;                eptr += oclength;
2351                }                }
2352    #else   /* without SUPPORT_UCP */
2353                else break;
2354    #endif  /* SUPPORT_UCP */
2355              }              }
2356            while (eptr >= pp)  
2357              if (possessive) continue;
2358              for(;;)
2359             {             {
2360             RMATCH(rrc, eptr, ecode, offset_top, md, ims, eptrb, 0);             RMATCH(eptr, ecode, offset_top, md, ims, eptrb, 0, RM23);
2361             if (rrc != MATCH_NOMATCH) RRETURN(rrc);             if (rrc != MATCH_NOMATCH) RRETURN(rrc);
2362               if (eptr == pp) RRETURN(MATCH_NOMATCH);
2363    #ifdef SUPPORT_UCP
2364               eptr--;
2365               BACKCHAR(eptr);
2366    #else   /* without SUPPORT_UCP */
2367             eptr -= length;             eptr -= length;
2368    #endif  /* SUPPORT_UCP */
2369             }             }
           RRETURN(MATCH_NOMATCH);  
2370            }            }
2371          /* Control never gets here */          /* Control never gets here */
2372          }          }
# Line 2102  for (;;) Line 2406  for (;;)
2406          {          {
2407          for (fi = min;; fi++)          for (fi = min;; fi++)
2408            {            {
2409            RMATCH(rrc, eptr, ecode, offset_top, md, ims, eptrb, 0);            RMATCH(eptr, ecode, offset_top, md, ims, eptrb, 0, RM24);
2410            if (rrc != MATCH_NOMATCH) RRETURN(rrc);            if (rrc != MATCH_NOMATCH) RRETURN(rrc);
2411            if (fi >= max || eptr >= md->end_subject ||            if (fi >= max || eptr >= md->end_subject ||
2412                fc != md->lcc[*eptr++])                fc != md->lcc[*eptr++])
# Line 2110  for (;;) Line 2414  for (;;)
2414            }            }
2415          /* Control never gets here */          /* Control never gets here */
2416          }          }
2417        else        else  /* Maximize */
2418          {          {
2419          pp = eptr;          pp = eptr;
2420          for (i = min; i < max; i++)          for (i = min; i < max; i++)
# Line 2118  for (;;) Line 2422  for (;;)
2422            if (eptr >= md->end_subject || fc != md->lcc[*eptr]) break;            if (eptr >= md->end_subject || fc != md->lcc[*eptr]) break;
2423            eptr++;            eptr++;
2424            }            }
2425            if (possessive) continue;
2426          while (eptr >= pp)          while (eptr >= pp)
2427            {            {
2428            RMATCH(rrc, eptr, ecode, offset_top, md, ims, eptrb, 0);            RMATCH(eptr, ecode, offset_top, md, ims, eptrb, 0, RM25);
2429            eptr--;            eptr--;
2430            if (rrc != MATCH_NOMATCH) RRETURN(rrc);            if (rrc != MATCH_NOMATCH) RRETURN(rrc);
2431            }            }
# Line 2139  for (;;) Line 2444  for (;;)
2444          {          {
2445          for (fi = min;; fi++)          for (fi = min;; fi++)
2446            {            {
2447            RMATCH(rrc, eptr, ecode, offset_top, md, ims, eptrb, 0);            RMATCH(eptr, ecode, offset_top, md, ims, eptrb, 0, RM26);
2448            if (rrc != MATCH_NOMATCH) RRETURN(rrc);            if (rrc != MATCH_NOMATCH) RRETURN(rrc);
2449            if (fi >= max || eptr >= md->end_subject || fc != *eptr++)            if (fi >= max || eptr >= md->end_subject || fc != *eptr++)
2450              RRETURN(MATCH_NOMATCH);              RRETURN(MATCH_NOMATCH);
2451            }            }
2452          /* Control never gets here */          /* Control never gets here */
2453          }          }
2454        else        else  /* Maximize */
2455          {          {
2456          pp = eptr;          pp = eptr;
2457          for (i = min; i < max; i++)          for (i = min; i < max; i++)
# Line 2154  for (;;) Line 2459  for (;;)
2459            if (eptr >= md->end_subject || fc != *eptr) break;            if (eptr >= md->end_subject || fc != *eptr) break;
2460            eptr++;            eptr++;
2461            }            }
2462            if (possessive) continue;
2463          while (eptr >= pp)          while (eptr >= pp)
2464            {            {
2465            RMATCH(rrc, eptr, ecode, offset_top, md, ims, eptrb, 0);            RMATCH(eptr, ecode, offset_top, md, ims, eptrb, 0, RM27);
2466            eptr--;            eptr--;
2467            if (rrc != MATCH_NOMATCH) RRETURN(rrc);            if (rrc != MATCH_NOMATCH) RRETURN(rrc);
2468            }            }
# Line 2206  for (;;) Line 2512  for (;;)
2512      ecode += 3;      ecode += 3;
2513      goto REPEATNOTCHAR;      goto REPEATNOTCHAR;
2514    
2515        case OP_NOTPOSSTAR:
2516        possessive = TRUE;
2517        min = 0;
2518        max = INT_MAX;
2519        ecode++;
2520        goto REPEATNOTCHAR;
2521    
2522        case OP_NOTPOSPLUS:
2523        possessive = TRUE;
2524        min = 1;
2525        max = INT_MAX;
2526        ecode++;
2527        goto REPEATNOTCHAR;
2528    
2529        case OP_NOTPOSQUERY:
2530        possessive = TRUE;
2531        min = 0;
2532        max = 1;
2533        ecode++;
2534        goto REPEATNOTCHAR;
2535    
2536        case OP_NOTPOSUPTO:
2537        possessive = TRUE;
2538        min = 0;
2539        max = GET2(ecode, 1);
2540        ecode += 3;
2541        goto REPEATNOTCHAR;
2542    
2543      case OP_NOTSTAR:      case OP_NOTSTAR:
2544      case OP_NOTMINSTAR:      case OP_NOTMINSTAR:
2545      case OP_NOTPLUS:      case OP_NOTPLUS:
# Line 2245  for (;;) Line 2579  for (;;)
2579        /* UTF-8 mode */        /* UTF-8 mode */
2580        if (utf8)        if (utf8)
2581          {          {
2582          register int d;          register unsigned int d;
2583          for (i = 1; i <= min; i++)          for (i = 1; i <= min; i++)
2584            {            {
2585            GETCHARINC(d, eptr);            GETCHARINC(d, eptr);
# Line 2270  for (;;) Line 2604  for (;;)
2604          /* UTF-8 mode */          /* UTF-8 mode */
2605          if (utf8)          if (utf8)
2606            {            {
2607            register int d;            register unsigned int d;
2608            for (fi = min;; fi++)            for (fi = min;; fi++)
2609              {              {
2610              RMATCH(rrc, eptr, ecode, offset_top, md, ims, eptrb, 0);              RMATCH(eptr, ecode, offset_top, md, ims, eptrb, 0, RM28);
2611              if (rrc != MATCH_NOMATCH) RRETURN(rrc);              if (rrc != MATCH_NOMATCH) RRETURN(rrc);
2612              GETCHARINC(d, eptr);              GETCHARINC(d, eptr);
2613              if (d < 256) d = md->lcc[d];              if (d < 256) d = md->lcc[d];
# Line 2287  for (;;) Line 2621  for (;;)
2621            {            {
2622            for (fi = min;; fi++)            for (fi = min;; fi++)
2623              {              {
2624              RMATCH(rrc, eptr, ecode, offset_top, md, ims, eptrb, 0);              RMATCH(eptr, ecode, offset_top, md, ims, eptrb, 0, RM29);
2625              if (rrc != MATCH_NOMATCH) RRETURN(rrc);              if (rrc != MATCH_NOMATCH) RRETURN(rrc);
2626              if (fi >= max || eptr >= md->end_subject || fc == md->lcc[*eptr++])              if (fi >= max || eptr >= md->end_subject || fc == md->lcc[*eptr++])
2627                RRETURN(MATCH_NOMATCH);                RRETURN(MATCH_NOMATCH);
# Line 2306  for (;;) Line 2640  for (;;)
2640          /* UTF-8 mode */          /* UTF-8 mode */
2641          if (utf8)          if (utf8)
2642            {            {
2643            register int d;            register unsigned int d;
2644            for (i = min; i < max; i++)            for (i = min; i < max; i++)
2645              {              {
2646              int len = 1;              int len = 1;
# Line 2316  for (;;) Line 2650  for (;;)
2650              if (fc == d) break;              if (fc == d) break;
2651              eptr += len;              eptr += len;
2652              }              }
2653            for(;;)          if (possessive) continue;
2654            for(;;)
2655              {              {
2656              RMATCH(rrc, eptr, ecode, offset_top, md, ims, eptrb, 0);              RMATCH(eptr, ecode, offset_top, md, ims, eptrb, 0, RM30);
2657              if (rrc != MATCH_NOMATCH) RRETURN(rrc);              if (rrc != MATCH_NOMATCH) RRETURN(rrc);
2658              if (eptr-- == pp) break;        /* Stop if tried at original pos */              if (eptr-- == pp) break;        /* Stop if tried at original pos */
2659              BACKCHAR(eptr);              BACKCHAR(eptr);
# Line 2333  for (;;) Line 2668  for (;;)
2668              if (eptr >= md->end_subject || fc == md->lcc[*eptr]) break;              if (eptr >= md->end_subject || fc == md->lcc[*eptr]) break;
2669              eptr++;              eptr++;
2670              }              }
2671              if (possessive) continue;
2672            while (eptr >= pp)            while (eptr >= pp)
2673              {              {
2674              RMATCH(rrc, eptr, ecode, offset_top, md, ims, eptrb, 0);              RMATCH(eptr, ecode, offset_top, md, ims, eptrb, 0, RM31);
2675              if (rrc != MATCH_NOMATCH) RRETURN(rrc);              if (rrc != MATCH_NOMATCH) RRETURN(rrc);
2676              eptr--;              eptr--;
2677              }              }
# Line 2354  for (;;) Line 2690  for (;;)
2690        /* UTF-8 mode */        /* UTF-8 mode */
2691        if (utf8)        if (utf8)
2692          {          {
2693          register int d;          register unsigned int d;
2694          for (i = 1; i <= min; i++)          for (i = 1; i <= min; i++)
2695            {            {
2696            GETCHARINC(d, eptr);            GETCHARINC(d, eptr);
# Line 2377  for (;;) Line 2713  for (;;)
2713          /* UTF-8 mode */          /* UTF-8 mode */
2714          if (utf8)          if (utf8)
2715            {            {
2716            register int d;            register unsigned int d;
2717            for (fi = min;; fi++)            for (fi = min;; fi++)
2718              {              {
2719              RMATCH(rrc, eptr, ecode, offset_top, md, ims, eptrb, 0);              RMATCH(eptr, ecode, offset_top, md, ims, eptrb, 0, RM32);
2720              if (rrc != MATCH_NOMATCH) RRETURN(rrc);              if (rrc != MATCH_NOMATCH) RRETURN(rrc);
2721              GETCHARINC(d, eptr);              GETCHARINC(d, eptr);
2722              if (fi >= max || eptr >= md->end_subject || fc == d)              if (fi >= max || eptr >= md->end_subject || fc == d)
# Line 2393  for (;;) Line 2729  for (;;)
2729            {            {
2730            for (fi = min;; fi++)            for (fi = min;; fi++)
2731              {              {
2732              RMATCH(rrc, eptr, ecode, offset_top, md, ims, eptrb, 0);              RMATCH(eptr, ecode, offset_top, md, ims, eptrb, 0, RM33);
2733              if (rrc != MATCH_NOMATCH) RRETURN(rrc);              if (rrc != MATCH_NOMATCH) RRETURN(rrc);
2734              if (fi >= max || eptr >= md->end_subject || fc == *eptr++)              if (fi >= max || eptr >= md->end_subject || fc == *eptr++)
2735                RRETURN(MATCH_NOMATCH);                RRETURN(MATCH_NOMATCH);
# Line 2412  for (;;) Line 2748  for (;;)
2748          /* UTF-8 mode */          /* UTF-8 mode */
2749          if (utf8)          if (utf8)
2750            {            {
2751            register int d;            register unsigned int d;
2752            for (i = min; i < max; i++)            for (i = min; i < max; i++)
2753              {              {
2754              int len = 1;              int len = 1;
# Line 2421  for (;;) Line 2757  for (;;)
2757              if (fc == d) break;              if (fc == d) break;
2758              eptr += len;              eptr += len;
2759              }              }
2760              if (possessive) continue;
2761            for(;;)            for(;;)
2762              {              {
2763              RMATCH(rrc, eptr, ecode, offset_top, md, ims, eptrb, 0);              RMATCH(eptr, ecode, offset_top, md, ims, eptrb, 0, RM34);
2764              if (rrc != MATCH_NOMATCH) RRETURN(rrc);              if (rrc != MATCH_NOMATCH) RRETURN(rrc);
2765              if (eptr-- == pp) break;        /* Stop if tried at original pos */              if (eptr-- == pp) break;        /* Stop if tried at original pos */
2766              BACKCHAR(eptr);              BACKCHAR(eptr);
# Line 2438  for (;;) Line 2775  for (;;)
2775              if (eptr >= md->end_subject || fc == *eptr) break;              if (eptr >= md->end_subject || fc == *eptr) break;
2776              eptr++;              eptr++;
2777              }              }
2778              if (possessive) continue;
2779            while (eptr >= pp)            while (eptr >= pp)
2780              {              {
2781              RMATCH(rrc, eptr, ecode, offset_top, md, ims, eptrb, 0);              RMATCH(eptr, ecode, offset_top, md, ims, eptrb, 0, RM35);
2782              if (rrc != MATCH_NOMATCH) RRETURN(rrc);              if (rrc != MATCH_NOMATCH) RRETURN(rrc);
2783              eptr--;              eptr--;
2784              }              }
# Line 2469  for (;;) Line 2807  for (;;)
2807      ecode += 3;      ecode += 3;
2808      goto REPEATTYPE;      goto REPEATTYPE;
2809    
2810        case OP_TYPEPOSSTAR:
2811        possessive = TRUE;
2812        min = 0;
2813        max = INT_MAX;
2814        ecode++;
2815        goto REPEATTYPE;
2816    
2817        case OP_TYPEPOSPLUS:
2818        possessive = TRUE;
2819        min = 1;
2820        max = INT_MAX;
2821        ecode++;
2822        goto REPEATTYPE;
2823    
2824        case OP_TYPEPOSQUERY:
2825        possessive = TRUE;
2826        min = 0;
2827        max = 1;
2828        ecode++;
2829        goto REPEATTYPE;
2830    
2831        case OP_TYPEPOSUPTO:
2832        possessive = TRUE;
2833        min = 0;
2834        max = GET2(ecode, 1);
2835        ecode += 3;
2836        goto REPEATTYPE;
2837    
2838      case OP_TYPESTAR:      case OP_TYPESTAR:
2839      case OP_TYPEMINSTAR:      case OP_TYPEMINSTAR:
2840      case OP_TYPEPLUS:      case OP_TYPEPLUS:
# Line 2519  for (;;) Line 2885  for (;;)
2885            for (i = 1; i <= min; i++)            for (i = 1; i <= min; i++)
2886              {              {
2887              if (eptr >= md->end_subject) RRETURN(MATCH_NOMATCH);              if (eptr >= md->end_subject) RRETURN(MATCH_NOMATCH);
2888              GETCHARINC(c, eptr);              GETCHARINCTEST(c, eptr);
2889              }              }
2890            break;            break;
2891    
# Line 2527  for (;;) Line 2893  for (;;)
2893            for (i = 1; i <= min; i++)            for (i = 1; i <= min; i++)
2894              {              {
2895              if (eptr >= md->end_subject) RRETURN(MATCH_NOMATCH);              if (eptr >= md->end_subject) RRETURN(MATCH_NOMATCH);
2896              GETCHARINC(c, eptr);              GETCHARINCTEST(c, eptr);
2897              prop_category = _pcre_ucp_findprop(c, &prop_chartype, &prop_script);              prop_chartype = UCD_CHARTYPE(c);
2898              if ((prop_chartype == ucp_Lu ||              if ((prop_chartype == ucp_Lu ||
2899                   prop_chartype == ucp_Ll ||                   prop_chartype == ucp_Ll ||
2900                   prop_chartype == ucp_Lt) == prop_fail_result)                   prop_chartype == ucp_Lt) == prop_fail_result)
# Line 2540  for (;;) Line 2906  for (;;)
2906            for (i = 1; i <= min; i++)            for (i = 1; i <= min; i++)
2907              {              {
2908              if (eptr >= md->end_subject) RRETURN(MATCH_NOMATCH);              if (eptr >= md->end_subject) RRETURN(MATCH_NOMATCH);
2909              GETCHARINC(c, eptr);              GETCHARINCTEST(c, eptr);
2910              prop_category = _pcre_ucp_findprop(c, &prop_chartype, &prop_script);              prop_category = UCD_CATEGORY(c);
2911              if ((prop_category == prop_value) == prop_fail_result)              if ((prop_category == prop_value) == prop_fail_result)
2912                RRETURN(MATCH_NOMATCH);                RRETURN(MATCH_NOMATCH);
2913              }              }
# Line 2551  for (;;) Line 2917  for (;;)
2917            for (i = 1; i <= min; i++)            for (i = 1; i <= min; i++)
2918              {              {
2919              if (eptr >= md->end_subject) RRETURN(MATCH_NOMATCH);              if (eptr >= md->end_subject) RRETURN(MATCH_NOMATCH);
2920              GETCHARINC(c, eptr);              GETCHARINCTEST(c, eptr);
2921              prop_category = _pcre_ucp_findprop(c, &prop_chartype, &prop_script);              prop_chartype = UCD_CHARTYPE(c);
2922              if ((prop_chartype == prop_value) == prop_fail_result)              if ((prop_chartype == prop_value) == prop_fail_result)
2923                RRETURN(MATCH_NOMATCH);                RRETURN(MATCH_NOMATCH);
2924              }              }
# Line 2562  for (;;) Line 2928  for (;;)
2928            for (i = 1; i <= min; i++)            for (i = 1; i <= min; i++)
2929              {              {
2930              if (eptr >= md->end_subject) RRETURN(MATCH_NOMATCH);              if (eptr >= md->end_subject) RRETURN(MATCH_NOMATCH);
2931              GETCHARINC(c, eptr);              GETCHARINCTEST(c, eptr);
2932              prop_category = _pcre_ucp_findprop(c, &prop_chartype, &prop_script);              prop_script = UCD_SCRIPT(c);
2933              if ((prop_script == prop_value) == prop_fail_result)              if ((prop_script == prop_value) == prop_fail_result)
2934                RRETURN(MATCH_NOMATCH);                RRETURN(MATCH_NOMATCH);
2935              }              }
# Line 2571  for (;;) Line 2937  for (;;)
2937    
2938            default:            default:
2939            RRETURN(PCRE_ERROR_INTERNAL);            RRETURN(PCRE_ERROR_INTERNAL);
           break;  
2940            }            }
2941          }          }
2942    
# Line 2583  for (;;) Line 2948  for (;;)
2948          for (i = 1; i <= min; i++)          for (i = 1; i <= min; i++)
2949            {            {
2950            GETCHARINCTEST(c, eptr);            GETCHARINCTEST(c, eptr);
2951            prop_category = _pcre_ucp_findprop(c, &prop_chartype, &prop_script);            prop_category = UCD_CATEGORY(c);
2952            if (prop_category == ucp_M) RRETURN(MATCH_NOMATCH);            if (prop_category == ucp_M) RRETURN(MATCH_NOMATCH);
2953            while (eptr < md->end_subject)            while (eptr < md->end_subject)
2954              {              {
# Line 2592  for (;;) Line 2957  for (;;)
2957                {                {
2958                GETCHARLEN(c, eptr, len);                GETCHARLEN(c, eptr, len);
2959                }                }
2960              prop_category = _pcre_ucp_findprop(c, &prop_chartype, &prop_script);              prop_category = UCD_CATEGORY(c);
2961              if (prop_category != ucp_M) break;              if (prop_category != ucp_M) break;
2962              eptr += len;              eptr += len;
2963              }              }
# Line 2610  for (;;) Line 2975  for (;;)
2975          case OP_ANY:          case OP_ANY:
2976          for (i = 1; i <= min; i++)          for (i = 1; i <= min; i++)
2977            {            {
2978            if (eptr >= md->end_subject ||            if (eptr >= md->end_subject || IS_NEWLINE(eptr))
                ((ims & PCRE_DOTALL) == 0 &&  
                  eptr <= md->end_subject - md->nllen &&  
                  IS_NEWLINE(eptr)))  
2979              RRETURN(MATCH_NOMATCH);              RRETURN(MATCH_NOMATCH);
2980            eptr++;            eptr++;
2981            while (eptr < md->end_subject && (*eptr & 0xc0) == 0x80) eptr++;            while (eptr < md->end_subject && (*eptr & 0xc0) == 0x80) eptr++;
2982            }            }
2983          break;          break;
2984    
2985            case OP_ALLANY:
2986            for (i = 1; i <= min; i++)
2987              {
2988              if (eptr >= md->end_subject) RRETURN(MATCH_NOMATCH);
2989              eptr++;
2990              while (eptr < md->end_subject && (*eptr & 0xc0) == 0x80) eptr++;
2991              }
2992            break;
2993    
2994          case OP_ANYBYTE:          case OP_ANYBYTE:
2995          eptr += min;          eptr += min;
2996          break;          break;
2997    
2998            case OP_ANYNL:
2999            for (i = 1; i <= min; i++)
3000              {
3001              if (eptr >= md->end_subject) RRETURN(MATCH_NOMATCH);
3002              GETCHARINC(c, eptr);
3003              switch(c)
3004                {
3005                default: RRETURN(MATCH_NOMATCH);
3006                case 0x000d:
3007                if (eptr < md->end_subject && *eptr == 0x0a) eptr++;
3008                break;
3009    
3010                case 0x000a:
3011                break;
3012    
3013                case 0x000b:
3014                case 0x000c:
3015                case 0x0085:
3016                case 0x2028:
3017                case 0x2029:
3018                if (md->bsr_anycrlf) RRETURN(MATCH_NOMATCH);
3019                break;
3020                }
3021              }
3022            break;
3023    
3024            case OP_NOT_HSPACE:
3025            for (i = 1; i <= min; i++)
3026              {
3027              if (eptr >= md->end_subject) RRETURN(MATCH_NOMATCH);
3028              GETCHARINC(c, eptr);
3029              switch(c)
3030                {
3031                default: break;
3032                case 0x09:      /* HT */
3033                case 0x20:      /* SPACE */
3034                case 0xa0:      /* NBSP */
3035                case 0x1680:    /* OGHAM SPACE MARK */
3036                case 0x180e:    /* MONGOLIAN VOWEL SEPARATOR */
3037                case 0x2000:    /* EN QUAD */
3038                case 0x2001:    /* EM QUAD */
3039                case 0x2002:    /* EN SPACE */
3040                case 0x2003:    /* EM SPACE */
3041                case 0x2004:    /* THREE-PER-EM SPACE */
3042                case 0x2005:    /* FOUR-PER-EM SPACE */
3043                case 0x2006:    /* SIX-PER-EM SPACE */
3044                case 0x2007:    /* FIGURE SPACE */
3045                case 0x2008:    /* PUNCTUATION SPACE */
3046                case 0x2009:    /* THIN SPACE */
3047                case 0x200A:    /* HAIR SPACE */
3048                case 0x202f:    /* NARROW NO-BREAK SPACE */
3049                case 0x205f:    /* MEDIUM MATHEMATICAL SPACE */
3050                case 0x3000:    /* IDEOGRAPHIC SPACE */
3051                RRETURN(MATCH_NOMATCH);
3052                }
3053              }
3054            break;
3055    
3056            case OP_HSPACE:
3057            for (i = 1; i <= min; i++)
3058              {
3059              if (eptr >= md->end_subject) RRETURN(MATCH_NOMATCH);
3060              GETCHARINC(c, eptr);
3061              switch(c)
3062                {
3063                default: RRETURN(MATCH_NOMATCH);
3064                case 0x09:      /* HT */
3065                case 0x20:      /* SPACE */
3066                case 0xa0:      /* NBSP */
3067                case 0x1680:    /* OGHAM SPACE MARK */
3068                case 0x180e:    /* MONGOLIAN VOWEL SEPARATOR */
3069                case 0x2000:    /* EN QUAD */
3070                case 0x2001:    /* EM QUAD */
3071                case 0x2002:    /* EN SPACE */
3072                case 0x2003:    /* EM SPACE */
3073                case 0x2004:    /* THREE-PER-EM SPACE */
3074                case 0x2005:    /* FOUR-PER-EM SPACE */
3075                case 0x2006:    /* SIX-PER-EM SPACE */
3076                case 0x2007:    /* FIGURE SPACE */
3077                case 0x2008:    /* PUNCTUATION SPACE */
3078                case 0x2009:    /* THIN SPACE */
3079                case 0x200A:    /* HAIR SPACE */
3080                case 0x202f:    /* NARROW NO-BREAK SPACE */
3081                case 0x205f:    /* MEDIUM MATHEMATICAL SPACE */
3082                case 0x3000:    /* IDEOGRAPHIC SPACE */
3083                break;
3084                }
3085              }
3086            break;
3087    
3088            case OP_NOT_VSPACE:
3089            for (i = 1; i <= min; i++)
3090              {
3091              if (eptr >= md->end_subject) RRETURN(MATCH_NOMATCH);
3092              GETCHARINC(c, eptr);
3093              switch(c)
3094                {
3095                default: break;
3096                case 0x0a:      /* LF */
3097                case 0x0b:      /* VT */
3098                case 0x0c:      /* FF */
3099                case 0x0d:      /* CR */
3100                case 0x85:      /* NEL */
3101                case 0x2028:    /* LINE SEPARATOR */
3102                case 0x2029:    /* PARAGRAPH SEPARATOR */
3103                RRETURN(MATCH_NOMATCH);
3104                }
3105              }
3106            break;
3107    
3108            case OP_VSPACE:
3109            for (i = 1; i <= min; i++)
3110              {
3111              if (eptr >= md->end_subject) RRETURN(MATCH_NOMATCH);
3112              GETCHARINC(c, eptr);
3113              switch(c)
3114                {
3115                default: RRETURN(MATCH_NOMATCH);
3116                case 0x0a:      /* LF */
3117                case 0x0b:      /* VT */
3118                case 0x0c:      /* FF */
3119                case 0x0d:      /* CR */
3120                case 0x85:      /* NEL */
3121                case 0x2028:    /* LINE SEPARATOR */
3122                case 0x2029:    /* PARAGRAPH SEPARATOR */
3123                break;
3124                }
3125              }
3126            break;
3127    
3128          case OP_NOT_DIGIT:          case OP_NOT_DIGIT:
3129          for (i = 1; i <= min; i++)          for (i = 1; i <= min; i++)
3130            {            {
# Line 2648  for (;;) Line 3149  for (;;)
3149          for (i = 1; i <= min; i++)          for (i = 1; i <= min; i++)
3150            {            {
3151            if (eptr >= md->end_subject ||            if (eptr >= md->end_subject ||
3152               (*eptr < 128 && (md->ctypes[*eptr++] & ctype_space) != 0))               (*eptr < 128 && (md->ctypes[*eptr] & ctype_space) != 0))
3153              RRETURN(MATCH_NOMATCH);              RRETURN(MATCH_NOMATCH);
3154            while (eptr < md->end_subject && (*eptr & 0xc0) == 0x80) eptr++;            while (++eptr < md->end_subject && (*eptr & 0xc0) == 0x80);
3155            }            }
3156          break;          break;
3157    
# Line 2668  for (;;) Line 3169  for (;;)
3169          for (i = 1; i <= min; i++)          for (i = 1; i <= min; i++)
3170            {            {
3171            if (eptr >= md->end_subject ||            if (eptr >= md->end_subject ||
3172               (*eptr < 128 && (md->ctypes[*eptr++] & ctype_word) != 0))               (*eptr < 128 && (md->ctypes[*eptr] & ctype_word) != 0))
3173              RRETURN(MATCH_NOMATCH);              RRETURN(MATCH_NOMATCH);
3174            while (eptr < md->end_subject && (*eptr & 0xc0) == 0x80) eptr++;            while (++eptr < md->end_subject && (*eptr & 0xc0) == 0x80);
3175            }            }
3176          break;          break;
3177    
# Line 2692  for (;;) Line 3193  for (;;)
3193  #endif     /* SUPPORT_UTF8 */  #endif     /* SUPPORT_UTF8 */
3194    
3195        /* Code for the non-UTF-8 case for minimum matching of operators other        /* Code for the non-UTF-8 case for minimum matching of operators other
3196        than OP_PROP and OP_NOTPROP. */        than OP_PROP and OP_NOTPROP. We can assume that there are the minimum
3197          number of bytes present, as this was tested above. */
3198    
3199        switch(ctype)        switch(ctype)
3200          {          {
3201          case OP_ANY:          case OP_ANY:
3202          if ((ims & PCRE_DOTALL) == 0)          for (i = 1; i <= min; i++)
3203            {            {
3204            for (i = 1; i <= min; i++)            if (IS_NEWLINE(eptr)) RRETURN(MATCH_NOMATCH);
3205              {            eptr++;
             if (eptr <= md->end_subject - md->nllen && IS_NEWLINE(eptr))  
               RRETURN(MATCH_NOMATCH);  
             eptr++;  
             }  
3206            }            }
3207          else eptr += min;          break;
3208    
3209            case OP_ALLANY:
3210            eptr += min;
3211          break;          break;
3212    
3213          case OP_ANYBYTE:          case OP_ANYBYTE:
3214          eptr += min;          eptr += min;
3215          break;          break;
3216    
3217            /* Because of the CRLF case, we can't assume the minimum number of
3218            bytes are present in this case. */
3219    
3220            case OP_ANYNL:
3221            for (i = 1; i <= min; i++)
3222              {
3223              if (eptr >= md->end_subject) RRETURN(MATCH_NOMATCH);
3224              switch(*eptr++)
3225                {
3226                default: RRETURN(MATCH_NOMATCH);
3227                case 0x000d:
3228                if (eptr < md->end_subject && *eptr == 0x0a) eptr++;
3229                break;
3230                case 0x000a:
3231                break;
3232    
3233                case 0x000b:
3234                case 0x000c:
3235                case 0x0085:
3236                if (md->bsr_anycrlf) RRETURN(MATCH_NOMATCH);
3237                break;
3238                }
3239              }
3240            break;
3241    
3242            case OP_NOT_HSPACE:
3243            for (i = 1; i <= min; i++)
3244              {
3245              if (eptr >= md->end_subject) RRETURN(MATCH_NOMATCH);
3246              switch(*eptr++)
3247                {
3248                default: break;
3249                case 0x09:      /* HT */
3250                case 0x20:      /* SPACE */
3251                case 0xa0:      /* NBSP */
3252                RRETURN(MATCH_NOMATCH);
3253                }
3254              }
3255            break;
3256    
3257            case OP_HSPACE:
3258            for (i = 1; i <= min; i++)
3259              {
3260              if (eptr >= md->end_subject) RRETURN(MATCH_NOMATCH);
3261              switch(*eptr++)
3262                {
3263                default: RRETURN(MATCH_NOMATCH);
3264                case 0x09:      /* HT */
3265                case 0x20:      /* SPACE */
3266                case 0xa0:      /* NBSP */
3267                break;
3268                }
3269              }
3270            break;
3271    
3272            case OP_NOT_VSPACE:
3273            for (i = 1; i <= min; i++)
3274              {
3275              if (eptr >= md->end_subject) RRETURN(MATCH_NOMATCH);
3276              switch(*eptr++)
3277                {
3278                default: break;
3279                case 0x0a:      /* LF */
3280                case 0x0b:      /* VT */
3281                case 0x0c:      /* FF */
3282                case 0x0d:      /* CR */
3283                case 0x85:      /* NEL */
3284                RRETURN(MATCH_NOMATCH);
3285                }
3286              }
3287            break;
3288    
3289            case OP_VSPACE:
3290            for (i = 1; i <= min; i++)
3291              {
3292              if (eptr >= md->end_subject) RRETURN(MATCH_NOMATCH);
3293              switch(*eptr++)
3294                {
3295                default: RRETURN(MATCH_NOMATCH);
3296                case 0x0a:      /* LF */
3297                case 0x0b:      /* VT */
3298                case 0x0c:      /* FF */
3299                case 0x0d:      /* CR */
3300                case 0x85:      /* NEL */
3301                break;
3302                }
3303              }
3304            break;
3305    
3306          case OP_NOT_DIGIT:          case OP_NOT_DIGIT:
3307          for (i = 1; i <= min; i++)          for (i = 1; i <= min; i++)
3308            if ((md->ctypes[*eptr++] & ctype_digit) != 0) RRETURN(MATCH_NOMATCH);            if ((md->ctypes[*eptr++] & ctype_digit) != 0) RRETURN(MATCH_NOMATCH);
# Line 2768  for (;;) Line 3358  for (;;)
3358            case PT_ANY:            case PT_ANY:
3359            for (fi = min;; fi++)            for (fi = min;; fi++)
3360              {              {
3361              RMATCH(rrc, eptr, ecode, offset_top, md, ims, eptrb, 0);              RMATCH(eptr, ecode, offset_top, md, ims, eptrb, 0, RM36);
3362              if (rrc != MATCH_NOMATCH) RRETURN(rrc);              if (rrc != MATCH_NOMATCH) RRETURN(rrc);
3363              if (fi >= max || eptr >= md->end_subject) RRETURN(MATCH_NOMATCH);              if (fi >= max || eptr >= md->end_subject) RRETURN(MATCH_NOMATCH);
3364              GETCHARINC(c, eptr);              GETCHARINC(c, eptr);
3365              if (prop_fail_result) RRETURN(MATCH_NOMATCH);              if (prop_fail_result) RRETURN(MATCH_NOMATCH);
3366              }              }
3367            break;            /* Control never gets here */
3368    
3369            case PT_LAMP:            case PT_LAMP:
3370            for (fi = min;; fi++)            for (fi = min;; fi++)
3371              {              {
3372              RMATCH(rrc, eptr, ecode, offset_top, md, ims, eptrb, 0);              RMATCH(eptr, ecode, offset_top, md, ims, eptrb, 0, RM37);
3373              if (rrc != MATCH_NOMATCH) RRETURN(rrc);              if (rrc != MATCH_NOMATCH) RRETURN(rrc);
3374              if (fi >= max || eptr >= md->end_subject) RRETURN(MATCH_NOMATCH);              if (fi >= max || eptr >= md->end_subject) RRETURN(MATCH_NOMATCH);
3375              GETCHARINC(c, eptr);              GETCHARINC(c, eptr);
3376              prop_category = _pcre_ucp_findprop(c, &prop_chartype, &prop_script);              prop_chartype = UCD_CHARTYPE(c);
3377              if ((prop_chartype == ucp_Lu ||              if ((prop_chartype == ucp_Lu ||
3378                   prop_chartype == ucp_Ll ||                   prop_chartype == ucp_Ll ||
3379                   prop_chartype == ucp_Lt) == prop_fail_result)                   prop_chartype == ucp_Lt) == prop_fail_result)
3380                RRETURN(MATCH_NOMATCH);                RRETURN(MATCH_NOMATCH);
3381              }              }
3382            break;            /* Control never gets here */
3383    
3384            case PT_GC:            case PT_GC:
3385            for (fi = min;; fi++)            for (fi = min;; fi++)
3386              {              {
3387              RMATCH(rrc, eptr, ecode, offset_top, md, ims, eptrb, 0);              RMATCH(eptr, ecode, offset_top, md, ims, eptrb, 0, RM38);
3388              if (rrc != MATCH_NOMATCH) RRETURN(rrc);              if (rrc != MATCH_NOMATCH) RRETURN(rrc);
3389              if (fi >= max || eptr >= md->end_subject) RRETURN(MATCH_NOMATCH);              if (fi >= max || eptr >= md->end_subject) RRETURN(MATCH_NOMATCH);
3390              GETCHARINC(c, eptr);              GETCHARINC(c, eptr);
3391              prop_category = _pcre_ucp_findprop(c, &prop_chartype, &prop_script);              prop_category = UCD_CATEGORY(c);
3392              if ((prop_category == prop_value) == prop_fail_result)              if ((prop_category == prop_value) == prop_fail_result)
3393                RRETURN(MATCH_NOMATCH);                RRETURN(MATCH_NOMATCH);
3394              }              }
3395            break;            /* Control never gets here */
3396    
3397            case PT_PC:            case PT_PC:
3398            for (fi = min;; fi++)            for (fi = min;; fi++)
3399              {              {
3400              RMATCH(rrc, eptr, ecode, offset_top, md, ims, eptrb, 0);              RMATCH(eptr, ecode, offset_top, md, ims, eptrb, 0, RM39);
3401              if (rrc != MATCH_NOMATCH) RRETURN(rrc);              if (rrc != MATCH_NOMATCH) RRETURN(rrc);
3402              if (fi >= max || eptr >= md->end_subject) RRETURN(MATCH_NOMATCH);              if (fi >= max || eptr >= md->end_subject) RRETURN(MATCH_NOMATCH);
3403              GETCHARINC(c, eptr);              GETCHARINC(c, eptr);
3404              prop_category = _pcre_ucp_findprop(c, &prop_chartype, &prop_script);              prop_chartype = UCD_CHARTYPE(c);
3405              if ((prop_chartype == prop_value) == prop_fail_result)              if ((prop_chartype == prop_value) == prop_fail_result)
3406                RRETURN(MATCH_NOMATCH);                RRETURN(MATCH_NOMATCH);
3407              }              }
3408            break;            /* Control never gets here */
3409    
3410            case PT_SC:            case PT_SC:
3411            for (fi = min;; fi++)            for (fi = min;; fi++)
3412              {              {
3413              RMATCH(rrc, eptr, ecode, offset_top, md, ims, eptrb, 0);              RMATCH(eptr, ecode, offset_top, md, ims, eptrb, 0, RM40);
3414              if (rrc != MATCH_NOMATCH) RRETURN(rrc);              if (rrc != MATCH_NOMATCH) RRETURN(rrc);
3415              if (fi >= max || eptr >= md->end_subject) RRETURN(MATCH_NOMATCH);              if (fi >= max || eptr >= md->end_subject) RRETURN(MATCH_NOMATCH);
3416              GETCHARINC(c, eptr);              GETCHARINC(c, eptr);
3417              prop_category = _pcre_ucp_findprop(c, &prop_chartype, &prop_script);              prop_script = UCD_SCRIPT(c);
3418              if ((prop_script == prop_value) == prop_fail_result)              if ((prop_script == prop_value) == prop_fail_result)
3419                RRETURN(MATCH_NOMATCH);                RRETURN(MATCH_NOMATCH);
3420              }              }
3421            break;            /* Control never gets here */
3422    
3423            default:            default:
3424            RRETURN(PCRE_ERROR_INTERNAL);            RRETURN(PCRE_ERROR_INTERNAL);
           break;  
3425            }            }
3426          }          }
3427    
# Line 2843  for (;;) Line 3432  for (;;)
3432          {          {
3433          for (fi = min;; fi++)          for (fi = min;; fi++)
3434            {            {
3435            RMATCH(rrc, eptr, ecode, offset_top, md, ims, eptrb, 0);            RMATCH(eptr, ecode, offset_top, md, ims, eptrb, 0, RM41);
3436            if (rrc != MATCH_NOMATCH) RRETURN(rrc);            if (rrc != MATCH_NOMATCH) RRETURN(rrc);
3437            if (fi >= max || eptr >= md->end_subject) RRETURN(MATCH_NOMATCH);            if (fi >= max || eptr >= md->end_subject) RRETURN(MATCH_NOMATCH);
3438            GETCHARINCTEST(c, eptr);            GETCHARINCTEST(c, eptr);
3439            prop_category = _pcre_ucp_findprop(c, &prop_chartype, &prop_script);            prop_category = UCD_CATEGORY(c);
3440            if (prop_category == ucp_M) RRETURN(MATCH_NOMATCH);            if (prop_category == ucp_M) RRETURN(MATCH_NOMATCH);
3441            while (eptr < md->end_subject)            while (eptr < md->end_subject)
3442              {              {
# Line 2856  for (;;) Line 3445  for (;;)
3445                {                {
3446                GETCHARLEN(c, eptr, len);                GETCHARLEN(c, eptr, len);
3447                }                }
3448              prop_category = _pcre_ucp_findprop(c, &prop_chartype, &prop_script);              prop_category = UCD_CATEGORY(c);
3449              if (prop_category != ucp_M) break;              if (prop_category != ucp_M) break;
3450              eptr += len;              eptr += len;
3451              }              }
# Line 2872  for (;;) Line 3461  for (;;)
3461          {          {
3462          for (fi = min;; fi++)          for (fi = min;; fi++)
3463            {            {
3464            RMATCH(rrc, eptr, ecode, offset_top, md, ims, eptrb, 0);            RMATCH(eptr, ecode, offset_top, md, ims, eptrb, 0, RM42);
3465            if (rrc != MATCH_NOMATCH) RRETURN(rrc);            if (rrc != MATCH_NOMATCH) RRETURN(rrc);
3466            if (fi >= max || eptr >= md->end_subject ||            if (fi >= max || eptr >= md->end_subject ||
3467                 (ctype == OP_ANY && (ims & PCRE_DOTALL) == 0 &&                 (ctype == OP_ANY && IS_NEWLINE(eptr)))
                 eptr <= md->end_subject - md->nllen && IS_NEWLINE(eptr)))  
3468              RRETURN(MATCH_NOMATCH);              RRETURN(MATCH_NOMATCH);
3469    
3470            GETCHARINC(c, eptr);            GETCHARINC(c, eptr);
3471            switch(ctype)            switch(ctype)
3472              {              {
3473              case OP_ANY:        /* This is the DOTALL case */              case OP_ANY:        /* This is the non-NL case */
3474                case OP_ALLANY:
3475                case OP_ANYBYTE:
3476              break;              break;
3477    
3478              case OP_ANYBYTE:              case OP_ANYNL:
3479                switch(c)
3480                  {
3481                  default: RRETURN(MATCH_NOMATCH);
3482                  case 0x000d:
3483                  if (eptr < md->end_subject && *eptr == 0x0a) eptr++;
3484                  break;
3485                  case 0x000a:
3486                  break;
3487    
3488                  case 0x000b:
3489                  case 0x000c:
3490                  case 0x0085:
3491                  case 0x2028:
3492                  case 0x2029:
3493                  if (md->bsr_anycrlf) RRETURN(MATCH_NOMATCH);
3494                  break;
3495                  }
3496                break;
3497    
3498                case OP_NOT_HSPACE:
3499                switch(c)
3500                  {
3501                  default: break;
3502                  case 0x09:      /* HT */
3503                  case 0x20:      /* SPACE */
3504                  case 0xa0:      /* NBSP */
3505                  case 0x1680:    /* OGHAM SPACE MARK */
3506                  case 0x180e:    /* MONGOLIAN VOWEL SEPARATOR */
3507                  case 0x2000:    /* EN QUAD */
3508                  case 0x2001:    /* EM QUAD */
3509                  case 0x2002:    /* EN SPACE */
3510                  case 0x2003:    /* EM SPACE */
3511                  case 0x2004:    /* THREE-PER-EM SPACE */
3512                  case 0x2005:    /* FOUR-PER-EM SPACE */
3513                  case 0x2006:    /* SIX-PER-EM SPACE */
3514                  case 0x2007:    /* FIGURE SPACE */
3515                  case 0x2008:    /* PUNCTUATION SPACE */
3516                  case 0x2009:    /* THIN SPACE */
3517                  case 0x200A:    /* HAIR SPACE */
3518                  case 0x202f:    /* NARROW NO-BREAK SPACE */
3519                  case 0x205f:    /* MEDIUM MATHEMATICAL SPACE */
3520                  case 0x3000:    /* IDEOGRAPHIC SPACE */
3521                  RRETURN(MATCH_NOMATCH);
3522                  }
3523                break;
3524    
3525                case OP_HSPACE:
3526                switch(c)
3527                  {
3528                  default: RRETURN(MATCH_NOMATCH);
3529                  case 0x09:      /* HT */
3530                  case 0x20:      /* SPACE */
3531                  case 0xa0:      /* NBSP */
3532                  case 0x1680:    /* OGHAM SPACE MARK */
3533                  case 0x180e:    /* MONGOLIAN VOWEL SEPARATOR */
3534                  case 0x2000:    /* EN QUAD */
3535                  case 0x2001:    /* EM QUAD */
3536                  case 0x2002:    /* EN SPACE */
3537                  case 0x2003:    /* EM SPACE */
3538                  case 0x2004:    /* THREE-PER-EM SPACE */
3539                  case 0x2005:    /* FOUR-PER-EM SPACE */
3540                  case 0x2006:    /* SIX-PER-EM SPACE */
3541                  case 0x2007:    /* FIGURE SPACE */
3542                  case 0x2008:    /* PUNCTUATION SPACE */
3543                  case 0x2009:    /* THIN SPACE */
3544                  case 0x200A:    /* HAIR SPACE */
3545                  case 0x202f:    /* NARROW NO-BREAK SPACE */
3546                  case 0x205f:    /* MEDIUM MATHEMATICAL SPACE */
3547                  case 0x3000:    /* IDEOGRAPHIC SPACE */
3548                  break;
3549                  }
3550                break;
3551    
3552                case OP_NOT_VSPACE:
3553                switch(c)
3554                  {
3555                  default: break;
3556                  case 0x0a:      /* LF */
3557                  case 0x0b:      /* VT */
3558                  case 0x0c:      /* FF */
3559                  case 0x0d:      /* CR */
3560                  case 0x85:      /* NEL */
3561                  case 0x2028:    /* LINE SEPARATOR */
3562                  case 0x2029:    /* PARAGRAPH SEPARATOR */
3563                  RRETURN(MATCH_NOMATCH);
3564                  }
3565                break;
3566    
3567                case OP_VSPACE:
3568                switch(c)
3569                  {
3570                  default: RRETURN(MATCH_NOMATCH);
3571                  case 0x0a:      /* LF */
3572                  case 0x0b:      /* VT */
3573                  case 0x0c:      /* FF */
3574                  case 0x0d:      /* CR */
3575                  case 0x85:      /* NEL */
3576                  case 0x2028:    /* LINE SEPARATOR */
3577                  case 0x2029:    /* PARAGRAPH SEPARATOR */
3578                  break;
3579                  }
3580              break;              break;
3581    
3582              case OP_NOT_DIGIT:              case OP_NOT_DIGIT:
# Line 2929  for (;;) Line 3620  for (;;)
3620          {          {
3621          for (fi = min;; fi++)          for (fi = min;; fi++)
3622            {            {
3623            RMATCH(rrc, eptr, ecode, offset_top, md, ims, eptrb, 0);            RMATCH(eptr, ecode, offset_top, md, ims, eptrb, 0, RM43);
3624            if (rrc != MATCH_NOMATCH) RRETURN(rrc);            if (rrc != MATCH_NOMATCH) RRETURN(rrc);
3625            if (fi >= max || eptr >= md->end_subject ||            if (fi >= max || eptr >= md->end_subject ||
3626                 ((ims & PCRE_DOTALL) == 0 &&                 (ctype == OP_ANY && IS_NEWLINE(eptr)))
                  eptr <= md->end_subject - md->nllen && IS_NEWLINE(eptr)))  
3627              RRETURN(MATCH_NOMATCH);              RRETURN(MATCH_NOMATCH);
3628    
3629            c = *eptr++;            c = *eptr++;
3630            switch(ctype)            switch(ctype)
3631              {              {
3632              case OP_ANY:   /* This is the DOTALL case */              case OP_ANY:     /* This is the non-NL case */
3633                case OP_ALLANY:
3634                case OP_ANYBYTE:
3635              break;              break;
3636    
3637              case OP_ANYBYTE:              case OP_ANYNL:
3638                switch(c)
3639                  {
3640                  default: RRETURN(MATCH_NOMATCH);
3641                  case 0x000d:
3642                  if (eptr < md->end_subject && *eptr == 0x0a) eptr++;
3643                  break;
3644    
3645                  case 0x000a:
3646                  break;
3647    
3648                  case 0x000b:
3649                  case 0x000c:
3650                  case 0x0085:
3651                  if (md->bsr_anycrlf) RRETURN(MATCH_NOMATCH);
3652                  break;
3653                  }
3654                break;
3655    
3656                case OP_NOT_HSPACE:
3657                switch(c)
3658                  {
3659                  default: break;
3660                  case 0x09:      /* HT */
3661                  case 0x20:      /* SPACE */
3662                  case 0xa0:      /* NBSP */
3663                  RRETURN(MATCH_NOMATCH);
3664                  }
3665                break;
3666    
3667                case OP_HSPACE:
3668                switch(c)
3669                  {
3670                  default: RRETURN(MATCH_NOMATCH);
3671                  case 0x09:      /* HT */
3672                  case 0x20:      /* SPACE */
3673                  case 0xa0:      /* NBSP */
3674                  break;
3675                  }
3676                break;
3677    
3678                case OP_NOT_VSPACE:
3679                switch(c)
3680                  {
3681                  default: break;
3682                  case 0x0a:      /* LF */
3683                  case 0x0b:      /* VT */
3684                  case 0x0c:      /* FF */
3685                  case 0x0d:      /* CR */
3686                  case 0x85:      /* NEL */
3687                  RRETURN(MATCH_NOMATCH);
3688                  }
3689                break;
3690    
3691                case OP_VSPACE:
3692                switch(c)
3693                  {
3694                  default: RRETURN(MATCH_NOMATCH);
3695                  case 0x0a:      /* LF */
3696                  case 0x0b:      /* VT */
3697                  case 0x0c:      /* FF */
3698                  case 0x0d:      /* CR */
3699                  case 0x85:      /* NEL */
3700                  break;
3701                  }
3702              break;              break;
3703    
3704              case OP_NOT_DIGIT:              case OP_NOT_DIGIT:
# Line 2977  for (;;) Line 3733  for (;;)
3733        /* Control never gets here */        /* Control never gets here */
3734        }        }
3735    
3736      /* If maximizing it is worth using inline code for speed, doing the type      /* If maximizing, it is worth using inline code for speed, doing the type
3737      test once at the start (i.e. keep it out of the loop). Again, keep the      test once at the start (i.e. keep it out of the loop). Again, keep the
3738      UTF-8 and UCP stuff separate. */      UTF-8 and UCP stuff separate. */
3739    
# Line 3007  for (;;) Line 3763  for (;;)
3763              int len = 1;              int len = 1;
3764              if (eptr >= md->end_subject) break;              if (eptr >= md->end_subject) break;
3765              GETCHARLEN(c, eptr, len);              GETCHARLEN(c, eptr, len);
3766              prop_category = _pcre_ucp_findprop(c, &prop_chartype, &prop_script);              prop_chartype = UCD_CHARTYPE(c);
3767              if ((prop_chartype == ucp_Lu ||              if ((prop_chartype == ucp_Lu ||
3768                   prop_chartype == ucp_Ll ||                   prop_chartype == ucp_Ll ||
3769                   prop_chartype == ucp_Lt) == prop_fail_result)                   prop_chartype == ucp_Lt) == prop_fail_result)
# Line 3022  for (;;) Line 3778  for (;;)
3778              int len = 1;              int len = 1;
3779              if (eptr >= md->end_subject) break;              if (eptr >= md->end_subject) break;
3780              GETCHARLEN(c, eptr, len);              GETCHARLEN(c, eptr, len);
3781              prop_category = _pcre_ucp_findprop(c, &prop_chartype, &prop_script);              prop_category = UCD_CATEGORY(c);
3782              if ((prop_category == prop_value) == prop_fail_result)              if ((prop_category == prop_value) == prop_fail_result)
3783                break;                break;
3784              eptr+= len;              eptr+= len;
# Line 3035  for (;;) Line 3791  for (;;)
3791              int len = 1;              int len = 1;
3792              if (eptr >= md->end_subject) break;              if (eptr >= md->end_subject) break;
3793              GETCHARLEN(c, eptr, len);              GETCHARLEN(c, eptr, len);
3794              prop_category = _pcre_ucp_findprop(c, &prop_chartype, &prop_script);              prop_chartype = UCD_CHARTYPE(c);
3795              if ((prop_chartype == prop_value) == prop_fail_result)              if ((prop_chartype == prop_value) == prop_fail_result)
3796                break;                break;
3797              eptr+= len;              eptr+= len;
# Line 3048  for (;;) Line 3804  for (;;)
3804              int len = 1;              int len = 1;
3805              if (eptr >= md->end_subject) break;              if (eptr >= md->end_subject) break;
3806              GETCHARLEN(c, eptr, len);              GETCHARLEN(c, eptr, len);
3807              prop_category = _pcre_ucp_findprop(c, &prop_chartype, &prop_script);              prop_script = UCD_SCRIPT(c);
3808              if ((prop_script == prop_value) == prop_fail_result)              if ((prop_script == prop_value) == prop_fail_result)
3809                break;                break;
3810              eptr+= len;              eptr+= len;
# Line 3058  for (;;) Line 3814  for (;;)
3814    
3815          /* eptr is now past the end of the maximum run */          /* eptr is now past the end of the maximum run */
3816    
3817            if (possessive) continue;
3818          for(;;)          for(;;)
3819            {            {
3820            RMATCH(rrc, eptr, ecode, offset_top, md, ims, eptrb, 0);            RMATCH(eptr, ecode, offset_top, md, ims, eptrb, 0, RM44);
3821            if (rrc != MATCH_NOMATCH) RRETURN(rrc);            if (rrc != MATCH_NOMATCH) RRETURN(rrc);
3822            if (eptr-- == pp) break;        /* Stop if tried at original pos */            if (eptr-- == pp) break;        /* Stop if tried at original pos */
3823            BACKCHAR(eptr);            if (utf8) BACKCHAR(eptr);
3824            }            }
3825          }          }
3826    
# Line 3076  for (;;) Line 3833  for (;;)
3833            {            {
3834            if (eptr >= md->end_subject) break;            if (eptr >= md->end_subject) break;
3835            GETCHARINCTEST(c, eptr);            GETCHARINCTEST(c, eptr);
3836            prop_category = _pcre_ucp_findprop(c, &prop_chartype, &prop_script);            prop_category = UCD_CATEGORY(c);
3837            if (prop_category == ucp_M) break;            if (prop_category == ucp_M) break;
3838            while (eptr < md->end_subject)            while (eptr < md->end_subject)
3839              {              {
# Line 3085  for (;;) Line 3842  for (;;)
3842                {                {
3843                GETCHARLEN(c, eptr, len);                GETCHARLEN(c, eptr, len);
3844                }                }
3845              prop_category = _pcre_ucp_findprop(c, &prop_chartype, &prop_script);              prop_category = UCD_CATEGORY(c);
3846              if (prop_category != ucp_M) break;              if (prop_category != ucp_M) break;
3847              eptr += len;              eptr += len;
3848              }              }
# Line 3093  for (;;) Line 3850  for (;;)
3850    
3851          /* eptr is now past the end of the maximum run */          /* eptr is now past the end of the maximum run */
3852    
3853            if (possessive) continue;
3854          for(;;)          for(;;)
3855            {            {
3856            RMATCH(rrc, eptr, ecode, offset_top, md, ims, eptrb, 0);            RMATCH(eptr, ecode, offset_top, md, ims, eptrb, 0, RM45);
3857            if (rrc != MATCH_NOMATCH) RRETURN(rrc);            if (rrc != MATCH_NOMATCH) RRETURN(rrc);
3858            if (eptr-- == pp) break;        /* Stop if tried at original pos */            if (eptr-- == pp) break;        /* Stop if tried at original pos */
3859            for (;;)                        /* Move back over one extended */            for (;;)                        /* Move back over one extended */
3860              {              {
3861              int len = 1;              int len = 1;
             BACKCHAR(eptr);  
3862              if (!utf8) c = *eptr; else              if (!utf8) c = *eptr; else
3863                {                {
3864                  BACKCHAR(eptr);
3865                GETCHARLEN(c, eptr, len);                GETCHARLEN(c, eptr, len);
3866                }                }
3867              prop_category = _pcre_ucp_findprop(c, &prop_chartype, &prop_script);              prop_category = UCD_CATEGORY(c);
3868              if (prop_category != ucp_M) break;              if (prop_category != ucp_M) break;
3869              eptr--;              eptr--;
3870              }              }
# Line 3124  for (;;) Line 3882  for (;;)
3882          switch(ctype)          switch(ctype)
3883            {            {
3884            case OP_ANY:            case OP_ANY:
   
           /* Special code is required for UTF8, but when the maximum is  
           unlimited we don't need it, so we repeat the non-UTF8 code. This is  
           probably worth it, because .* is quite a common idiom. */  
   
3885            if (max < INT_MAX)            if (max < INT_MAX)
3886              {              {
3887              if ((ims & PCRE_DOTALL) == 0)              for (i = min; i < max; i++)
               {  
               for (i = min; i < max; i++)  
                 {  
                 if (eptr >= md->end_subject ||  
                     (eptr <= md->end_subject - md->nllen && IS_NEWLINE(eptr)))  
                   break;  
                 eptr++;  
                 while (eptr < md->end_subject && (*eptr & 0xc0) == 0x80) eptr++;  
                 }  
               }  
             else  
3888                {                {
3889                for (i = min; i < max; i++)                if (eptr >= md->end_subject || IS_NEWLINE(eptr)) break;
3890                  {                eptr++;
3891                  if (eptr >= md->end_subject) break;                while (eptr < md->end_subject && (*eptr & 0xc0) == 0x80) eptr++;
                 eptr++;  
                 while (eptr < md->end_subject && (*eptr & 0xc0) == 0x80) eptr++;  
                 }  
3892                }                }
3893              }              }
3894    
# Line 3157  for (;;) Line 3896  for (;;)
3896    
3897            else            else
3898              {              {
3899              if ((ims & PCRE_DOTALL) == 0)              for (i = min; i < max; i++)
3900                {                {
3901                for (i = min; i < max; i++)                if (eptr >= md->end_subject || IS_NEWLINE(eptr)) break;
3902                  {                eptr++;
3903                  if (eptr >= md->end_subject ||                while (eptr < md->end_subject && (*eptr & 0xc0) == 0x80) eptr++;
                     (eptr <= md->end_subject - md->nllen && IS_NEWLINE(eptr)))  
                   break;  
                 eptr++;  
                 }  
               break;  
3904                }                }
3905              else              }
3906              break;
3907    
3908              case OP_ALLANY:
3909              if (max < INT_MAX)
3910                {
3911                for (i = min; i < max; i++)
3912                {                {
3913                c = max - min;                if (eptr >= md->end_subject) break;
3914                if (c > md->end_subject - eptr) c = md->end_subject - eptr;                eptr++;
3915                eptr += c;                while (eptr < md->end_subject && (*eptr & 0xc0) == 0x80) eptr++;
3916                }                }
3917              }              }
3918              else eptr = md->end_subject;   /* Unlimited UTF-8 repeat */
3919            break;            break;
3920    
3921            /* The byte case is the same as non-UTF8 */            /* The byte case is the same as non-UTF8 */
3922    
3923            case OP_ANYBYTE:            case OP_ANYBYTE:
3924            c = max - min;            c = max - min;
3925            if (c > md->end_subject - eptr) c = md->end_subject - eptr;            if (c > (unsigned int)(md->end_subject - eptr))
3926                c = md->end_subject - eptr;
3927            eptr += c;            eptr += c;
3928            break;            break;
3929    
3930              case OP_ANYNL:
3931              for (i = min; i < max; i++)
3932                {
3933                int len = 1;
3934                if (eptr >= md->end_subject) break;
3935                GETCHARLEN(c, eptr, len);
3936                if (c == 0x000d)
3937                  {
3938                  if (++eptr >= md->end_subject) break;
3939                  if (*eptr == 0x000a) eptr++;
3940                  }
3941                else
3942                  {
3943                  if (c != 0x000a &&
3944                      (md->bsr_anycrlf ||
3945                       (c != 0x000b && c != 0x000c &&
3946                        c != 0x0085 && c != 0x2028 && c != 0x2029)))
3947                    break;
3948                  eptr += len;
3949                  }
3950                }
3951              break;
3952    
3953              case OP_NOT_HSPACE:
3954              case OP_HSPACE:
3955              for (i = min; i < max; i++)
3956                {
3957                BOOL gotspace;
3958                int len = 1;
3959                if (eptr >= md->end_subject) break;
3960                GETCHARLEN(c, eptr, len);
3961                switch(c)
3962                  {
3963                  default: gotspace = FALSE; break;
3964                  case 0x09:      /* HT */
3965                  case 0x20:      /* SPACE */
3966                  case 0xa0:      /* NBSP */
3967                  case 0x1680:    /* OGHAM SPACE MARK */
3968                  case 0x180e:    /* MONGOLIAN VOWEL SEPARATOR */
3969                  case 0x2000:    /* EN QUAD */
3970                  case 0x2001:    /* EM QUAD */
3971                  case 0x2002:    /* EN SPACE */
3972                  case 0x2003:    /* EM SPACE */
3973                  case 0x2004:    /* THREE-PER-EM SPACE */
3974                  case 0x2005:    /* FOUR-PER-EM SPACE */
3975                  case 0x2006:    /* SIX-PER-EM SPACE */
3976                  case 0x2007:    /* FIGURE SPACE */
3977                  case 0x2008:    /* PUNCTUATION SPACE */
3978                  case 0x2009:    /* THIN SPACE */
3979                  case 0x200A:    /* HAIR SPACE */
3980                  case 0x202f:    /* NARROW NO-BREAK SPACE */
3981                  case 0x205f:    /* MEDIUM MATHEMATICAL SPACE */
3982                  case 0x3000:    /* IDEOGRAPHIC SPACE */
3983                  gotspace = TRUE;
3984                  break;
3985                  }
3986                if (gotspace == (ctype == OP_NOT_HSPACE)) break;
3987                eptr += len;
3988                }
3989              break;
3990    
3991              case OP_NOT_VSPACE:
3992              case OP_VSPACE:
3993              for (i = min; i < max; i++)
3994                {
3995                BOOL gotspace;
3996                int len = 1;
3997                if (eptr >= md->end_subject) break;
3998                GETCHARLEN(c, eptr, len);
3999                switch(c)
4000                  {
4001                  default: gotspace = FALSE; break;
4002                  case 0x0a:      /* LF */
4003                  case 0x0b:      /* VT */
4004                  case 0x0c:      /* FF */
4005                  case 0x0d:      /* CR */
4006                  case 0x85:      /* NEL */
4007                  case 0x2028:    /* LINE SEPARATOR */
4008                  case 0x2029:    /* PARAGRAPH SEPARATOR */
4009                  gotspace = TRUE;
4010                  break;
4011                  }
4012                if (gotspace == (ctype == OP_NOT_VSPACE)) break;
4013                eptr += len;
4014                }
4015              break;
4016    
4017            case OP_NOT_DIGIT:            case OP_NOT_DIGIT:
4018            for (i = min; i < max; i++)            for (i = min; i < max; i++)
4019              {              {
# Line 3257  for (;;) Line 4086  for (;;)
4086    
4087          /* eptr is now past the end of the maximum run */          /* eptr is now past the end of the maximum run */
4088    
4089            if (possessive) continue;
4090          for(;;)          for(;;)
4091            {            {
4092            RMATCH(rrc, eptr, ecode, offset_top, md, ims, eptrb, 0);            RMATCH(eptr, ecode, offset_top, md, ims, eptrb, 0, RM46);
4093            if (rrc != MATCH_NOMATCH) RRETURN(rrc);            if (rrc != MATCH_NOMATCH) RRETURN(rrc);
4094            if (eptr-- == pp) break;        /* Stop if tried at original pos */            if (eptr-- == pp) break;        /* Stop if tried at original pos */
4095            BACKCHAR(eptr);            BACKCHAR(eptr);
4096            }            }
4097          }          }
4098        else        else
4099  #endif  #endif  /* SUPPORT_UTF8 */
4100    
4101        /* Not UTF-8 mode */        /* Not UTF-8 mode */
4102          {          {
4103          switch(ctype)          switch(ctype)
4104            {            {
4105            case OP_ANY:            case OP_ANY:
4106            if ((ims & PCRE_DOTALL) == 0)            for (i = min; i < max; i++)
4107              {              {
4108              for (i = min; i < max; i++)              if (eptr >= md->end_subject || IS_NEWLINE(eptr)) break;
4109                eptr++;
4110                }
4111              break;
4112    
4113              case OP_ALLANY:
4114              case OP_ANYBYTE:
4115              c = max - min;
4116              if (c > (unsigned int)(md->end_subject - eptr))
4117                c = md->end_subject - eptr;
4118              eptr += c;
4119              break;
4120    
4121              case OP_ANYNL:
4122              for (i = min; i < max; i++)
4123                {
4124                if (eptr >= md->end_subject) break;
4125                c = *eptr;
4126                if (c == 0x000d)
4127                  {
4128                  if (++eptr >= md->end_subject) break;
4129                  if (*eptr == 0x000a) eptr++;
4130                  }
4131                else
4132                {                {
4133                if (eptr >= md->end_subject ||                if (c != 0x000a &&
4134                    (eptr <= md->end_subject - md->nllen && IS_NEWLINE(eptr)))                    (md->bsr_anycrlf ||
4135                        (c != 0x000b && c != 0x000c && c != 0x0085)))
4136                  break;                  break;
4137                eptr++;                eptr++;
4138                }                }
             break;  
4139              }              }
4140            /* For DOTALL case, fall through and treat as \C */            break;
4141    
4142            case OP_ANYBYTE:            case OP_NOT_HSPACE:
4143            c = max - min;            for (i = min; i < max; i++)
4144            if (c > md->end_subject - eptr) c = md->end_subject - eptr;              {
4145            eptr += c;              if (eptr >= md->end_subject) break;
4146                c = *eptr;
4147                if (c == 0x09 || c == 0x20 || c == 0xa0) break;
4148                eptr++;
4149                }
4150              break;
4151    
4152              case OP_HSPACE:
4153              for (i = min; i < max; i++)
4154                {
4155                if (eptr >= md->end_subject) break;
4156                c = *eptr;
4157                if (c != 0x09 && c != 0x20 && c != 0xa0) break;
4158                eptr++;
4159                }
4160              break;
4161    
4162              case OP_NOT_VSPACE:
4163              for (i = min; i < max; i++)
4164                {
4165                if (eptr >= md->end_subject) break;
4166                c = *eptr;
4167                if (c == 0x0a || c == 0x0b || c == 0x0c || c == 0x0d || c == 0x85)
4168                  break;
4169                eptr++;
4170                }
4171              break;
4172    
4173              case OP_VSPACE:
4174              for (i = min; i < max; i++)
4175                {
4176                if (eptr >= md->end_subject) break;
4177                c = *eptr;
4178                if (c != 0x0a && c != 0x0b && c != 0x0c && c != 0x0d && c != 0x85)
4179                  break;
4180                eptr++;
4181                }
4182            break;            break;
4183    
4184            case OP_NOT_DIGIT:            case OP_NOT_DIGIT:
# Line 3352  for (;;) Line 4241  for (;;)
4241    
4242          /* eptr is now past the end of the maximum run */          /* eptr is now past the end of the maximum run */
4243    
4244            if (possessive) continue;
4245          while (eptr >= pp)          while (eptr >= pp)
4246            {            {
4247            RMATCH(rrc, eptr, ecode, offset_top, md, ims, eptrb, 0);            RMATCH(eptr, ecode, offset_top, md, ims, eptrb, 0, RM47);
4248            eptr--;            eptr--;
4249            if (rrc != MATCH_NOMATCH) RRETURN(rrc);            if (rrc != MATCH_NOMATCH) RRETURN(rrc);
4250            }            }
# Line 3366  for (;;) Line 4256  for (;;)
4256        }        }
4257      /* Control never gets here */      /* Control never gets here */
4258    
4259      /* There's been some horrible disaster. Since all codes > OP_BRA are      /* There's been some horrible disaster. Arrival here can only mean there is
4260      for capturing brackets, and there shouldn't be any gaps between 0 and      something seriously wrong in the code above or the OP_xxx definitions. */
     OP_BRA, arrival here can only mean there is something seriously wrong  
     in the code above or the OP_xxx definitions. */  
4261    
4262      default:      default:
4263      DPRINTF(("Unknown opcode %d\n", *ecode));      DPRINTF(("Unknown opcode %d\n", *ecode));
4264      RRETURN(PCRE_ERROR_UNKNOWN_NODE);      RRETURN(PCRE_ERROR_UNKNOWN_OPCODE);
4265      }      }
4266    
4267    /* Do not stick any code in here without much thought; it is assumed    /* Do not stick any code in here without much thought; it is assumed
# Line 3382  for (;;) Line 4270  for (;;)
4270    
4271    }             /* End of main loop */    }             /* End of main loop */
4272  /* Control never reaches here */  /* Control never reaches here */
4273    
4274    
4275    /* When compiling to use the heap rather than the stack for recursive calls to
4276    match(), the RRETURN() macro jumps here. The number that is saved in
4277    frame->Xwhere indicates which label we actually want to return to. */
4278    
4279    #ifdef NO_RECURSE
4280    #define LBL(val) case val: goto L_RM##val;
4281    HEAP_RETURN:
4282    switch (frame->Xwhere)
4283      {
4284      LBL( 1) LBL( 2) LBL( 3) LBL( 4) LBL( 5) LBL( 6) LBL( 7) LBL( 8)
4285      LBL( 9) LBL(10) LBL(11) LBL(12) LBL(13) LBL(14) LBL(15) LBL(17)
4286      LBL(19) LBL(24) LBL(25) LBL(26) LBL(27) LBL(29) LBL(31) LBL(33)
4287      LBL(35) LBL(43) LBL(47) LBL(48) LBL(49) LBL(50) LBL(51) LBL(52)
4288      LBL(53) LBL(54)
4289    #ifdef SUPPORT_UTF8
4290      LBL(16) LBL(18) LBL(20) LBL(21) LBL(22) LBL(23) LBL(28) LBL(30)
4291      LBL(32) LBL(34) LBL(42) LBL(46)
4292    #ifdef SUPPORT_UCP
4293      LBL(36) LBL(37) LBL(38) LBL(39) LBL(40) LBL(41) LBL(44) LBL(45)
4294    #endif  /* SUPPORT_UCP */
4295    #endif  /* SUPPORT_UTF8 */
4296      default:
4297      DPRINTF(("jump error in pcre match: label %d non-existent\n", frame->Xwhere));
4298      return PCRE_ERROR_INTERNAL;
4299      }
4300    #undef LBL
4301    #endif  /* NO_RECURSE */
4302  }  }
4303    
4304    
# Line 3394  Undefine all the macros that were define Line 4311  Undefine all the macros that were define
4311  #ifdef NO_RECURSE  #ifdef NO_RECURSE
4312  #undef eptr  #undef eptr
4313  #undef ecode  #undef ecode
4314    #undef mstart
4315  #undef offset_top  #undef offset_top
4316  #undef ims  #undef ims
4317  #undef eptrb  #undef eptrb
# Line 3411  Undefine all the macros that were define Line 4329  Undefine all the macros that were define
4329    
4330  #undef cur_is_word  #undef cur_is_word
4331  #undef condition  #undef condition
 #undef minimize  
4332  #undef prev_is_word  #undef prev_is_word
4333    
4334  #undef original_ims  #undef original_ims
# Line 3467  Returns:          > 0 => success; value Line 4384  Returns:          > 0 => success; value
4384                   < -1 => some kind of unexpected problem                   < -1 => some kind of unexpected problem
4385  */  */
4386    
4387  PCRE_DATA_SCOPE int  PCRE_EXP_DEFN int PCRE_CALL_CONVENTION
4388  pcre_exec(const pcre *argument_re, const pcre_extra *extra_data,  pcre_exec(const pcre *argument_re, const pcre_extra *extra_data,
4389    PCRE_SPTR subject, int length, int start_offset, int options, int *offsets,    PCRE_SPTR subject, int length, int start_offset, int options, int *offsets,
4390    int offsetcount)    int offsetcount)
# Line 3484  BOOL startline; Line 4401  BOOL startline;
4401  BOOL firstline;  BOOL firstline;
4402  BOOL first_byte_caseless = FALSE;  BOOL first_byte_caseless = FALSE;
4403  BOOL req_byte_caseless = FALSE;  BOOL req_byte_caseless = FALSE;
4404    BOOL utf8;
4405  match_data match_block;  match_data match_block;
4406  match_data *md = &match_block;  match_data *md = &match_block;
4407  const uschar *tables;  const uschar *tables;
# Line 3553  if (re->magic_number != MAGIC_NUMBER) Line 4471  if (re->magic_number != MAGIC_NUMBER)
4471  /* Set up other data */  /* Set up other data */
4472    
4473  anchored = ((re->options | options) & PCRE_ANCHORED) != 0;  anchored = ((re->options | options) & PCRE_ANCHORED) != 0;
4474  startline = (re->options & PCRE_STARTLINE) != 0;  startline = (re->flags & PCRE_STARTLINE) != 0;
4475  firstline = (re->options & PCRE_FIRSTLINE) != 0;  firstline = (re->options & PCRE_FIRSTLINE) != 0;
4476    
4477  /* The code starts after the real_pcre block and the capture name table. */  /* The code starts after the real_pcre block and the capture name table. */
# Line 3567  md->end_subject = md->start_subject + le Line 4485  md->end_subject = md->start_subject + le
4485  end_subject = md->end_subject;  end_subject = md->end_subject;
4486    
4487  md->endonly = (re->options & PCRE_DOLLAR_ENDONLY) != 0;  md->endonly = (re->options & PCRE_DOLLAR_ENDONLY) != 0;
4488  md->utf8 = (re->options & PCRE_UTF8) != 0;  utf8 = md->utf8 = (re->options & PCRE_UTF8) != 0;
4489    md->jscript_compat = (re->options & PCRE_JAVASCRIPT_COMPAT) != 0;
4490    
4491  md->notbol = (options & PCRE_NOTBOL) != 0;  md->notbol = (options & PCRE_NOTBOL) != 0;
4492  md->noteol = (options & PCRE_NOTEOL) != 0;  md->noteol = (options & PCRE_NOTEOL) != 0;
# Line 3580  md->recursive = NULL; Line 4499  md->recursive = NULL;
4499  md->lcc = tables + lcc_offset;  md->lcc = tables + lcc_offset;
4500  md->ctypes = tables + ctypes_offset;  md->ctypes = tables + ctypes_offset;
4501    
4502  /* Handle different types of newline. The two bits give four cases. If nothing  /* Handle different \R options. */
 is set at run time, whatever was used at compile time applies. */  
4503    
4504  switch ((((options & PCRE_NEWLINE_CRLF) == 0)? re->options : options) &  switch (options & (PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE))
          PCRE_NEWLINE_CRLF)  
4505    {    {
4506    default:              newline = NEWLINE; break;   /* Compile-time default */    case 0:
4507      if ((re->options & (PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE)) != 0)
4508        md->bsr_anycrlf = (re->options & PCRE_BSR_ANYCRLF) != 0;
4509      else
4510    #ifdef BSR_ANYCRLF
4511      md->bsr_anycrlf = TRUE;
4512    #else
4513      md->bsr_anycrlf = FALSE;
4514    #endif
4515      break;
4516    
4517      case PCRE_BSR_ANYCRLF:
4518      md->bsr_anycrlf = TRUE;
4519      break;
4520    
4521      case PCRE_BSR_UNICODE:
4522      md->bsr_anycrlf = FALSE;
4523      break;
4524    
4525      default: return PCRE_ERROR_BADNEWLINE;
4526      }
4527    
4528    /* Handle different types of newline. The three bits give eight cases. If
4529    nothing is set at run time, whatever was used at compile time applies. */
4530    
4531    switch ((((options & PCRE_NEWLINE_BITS) == 0)? re->options :
4532            (pcre_uint32)options) & PCRE_NEWLINE_BITS)
4533      {
4534      case 0: newline = NEWLINE; break;   /* Compile-time default */
4535    case PCRE_NEWLINE_CR: newline = '\r'; break;    case PCRE_NEWLINE_CR: newline = '\r'; break;
4536    case PCRE_NEWLINE_LF: newline = '\n'; break;    case PCRE_NEWLINE_LF: newline = '\n'; break;
4537    case PCRE_NEWLINE_CR+    case PCRE_NEWLINE_CR+
4538         PCRE_NEWLINE_LF: newline = ('\r' << 8) | '\n'; break;         PCRE_NEWLINE_LF: newline = ('\r' << 8) | '\n'; break;
4539      case PCRE_NEWLINE_ANY: newline = -1; break;
4540      case PCRE_NEWLINE_ANYCRLF: newline = -2; break;
4541      default: return PCRE_ERROR_BADNEWLINE;
4542    }    }
4543    
4544  if (newline > 255)  if (newline == -2)
4545      {
4546      md->nltype = NLTYPE_ANYCRLF;
4547      }
4548    else if (newline < 0)
4549    {    {
4550    md->nllen = 2;    md->nltype = NLTYPE_ANY;
   md->nl[0] = (newline >> 8) & 255;  
   md->nl[1] = newline & 255;  
4551    }    }
4552  else  else
4553    {    {
4554    md->nllen = 1;    md->nltype = NLTYPE_FIXED;
4555    md->nl[0] = newline;    if (newline > 255)
4556        {
4557        md->nllen = 2;
4558        md->nl[0] = (newline >> 8) & 255;
4559        md->nl[1] = newline & 255;
4560        }
4561      else
4562        {
4563        md->nllen = 1;
4564        md->nl[0] = newline;
4565        }
4566    }    }
4567    
4568  /* Partial matching is supported only for a restricted set of regexes at the  /* Partial matching is supported only for a restricted set of regexes at the
4569  moment. */  moment. */
4570    
4571  if (md->partial && (re->options & PCRE_NOPARTIAL) != 0)  if (md->partial && (re->flags & PCRE_NOPARTIAL) != 0)
4572    return PCRE_ERROR_BADPARTIAL;    return PCRE_ERROR_BADPARTIAL;
4573    
4574  /* Check a UTF-8 string if required. Unfortunately there's no way of passing  /* Check a UTF-8 string if required. Unfortunately there's no way of passing
4575  back the character offset. */  back the character offset. */
4576    
4577  #ifdef SUPPORT_UTF8  #ifdef SUPPORT_UTF8
4578  if (md->utf8 && (options & PCRE_NO_UTF8_CHECK) == 0)  if (utf8 && (options & PCRE_NO_UTF8_CHECK) == 0)
4579    {    {
4580    if (_pcre_valid_utf8((uschar *)subject, length) >= 0)    if (_pcre_valid_utf8((uschar *)subject, length) >= 0)
4581      return PCRE_ERROR_BADUTF8;      return PCRE_ERROR_BADUTF8;
# Line 3685  studied, there may be a bitmap of possib Line 4645  studied, there may be a bitmap of possib
4645    
4646  if (!anchored)  if (!anchored)
4647    {    {
4648    if ((re->options & PCRE_FIRSTSET) != 0)    if ((re->flags & PCRE_FIRSTSET) != 0)
4649      {      {
4650      first_byte = re->first_byte & 255;      first_byte = re->first_byte & 255;
4651      if ((first_byte_caseless = ((re->first_byte & REQ_CASELESS) != 0)) == TRUE)      if ((first_byte_caseless = ((re->first_byte & REQ_CASELESS) != 0)) == TRUE)
# Line 3700  if (!anchored) Line 4660  if (!anchored)
4660  /* For anchored or unanchored matches, there may be a "last known required  /* For anchored or unanchored matches, there may be a "last known required
4661  character" set. */  character" set. */
4662    
4663  if ((re->options & PCRE_REQCHSET) != 0)  if ((re->flags & PCRE_REQCHSET) != 0)
4664    {    {
4665    req_byte = re->req_byte & 255;    req_byte = re->req_byte & 255;
4666    req_byte_caseless = (re->req_byte & REQ_CASELESS) != 0;    req_byte_caseless = (re->req_byte & REQ_CASELESS) != 0;
4667    req_byte2 = (tables + fcc_offset)[req_byte];  /* case flipped */    req_byte2 = (tables + fcc_offset)[req_byte];  /* case flipped */
4668    }    }
4669    
4670    
4671    /* ==========================================================================*/
4672    
4673  /* Loop for handling unanchored repeated matching attempts; for anchored regexs  /* Loop for handling unanchored repeated matching attempts; for anchored regexs
4674  the loop runs just once. */  the loop runs just once. */
4675    
4676  do  for(;;)
4677    {    {
4678    USPTR save_end_subject = end_subject;    USPTR save_end_subject = end_subject;
4679      USPTR new_start_match;
4680    
4681    /* Reset the maximum number of extractions we might see. */    /* Reset the maximum number of extractions we might see. */
4682    
# Line 3725  do Line 4689  do
4689    
4690    /* Advance to a unique first char if possible. If firstline is TRUE, the    /* Advance to a unique first char if possible. If firstline is TRUE, the
4691    start of the match is constrained to the first line of a multiline string.    start of the match is constrained to the first line of a multiline string.
4692    Implement this by temporarily adjusting end_subject so that we stop scanning    That is, the match must be before or at the first newline. Implement this by
4693    at a newline. If the match fails at the newline, later code breaks this loop.    temporarily adjusting end_subject so that we stop scanning at a newline. If
4694    */    the match fails at the newline, later code breaks this loop. */
4695    
4696    if (firstline)    if (firstline)
4697      {      {
4698      USPTR t = start_match;      USPTR t = start_match;
4699      while (t <= save_end_subject - md->nllen && !IS_NEWLINE(t)) t++;      while (t < md->end_subject && !IS_NEWLINE(t)) t++;
4700      end_subject = t;      end_subject = t;
4701      }      }
4702    
# Line 3743  do Line 4707  do
4707      if (first_byte_caseless)      if (first_byte_caseless)
4708        while (start_match < end_subject &&        while (start_match < end_subject &&
4709               md->lcc[*start_match] != first_byte)               md->lcc[*start_match] != first_byte)
4710          start_match++;          { NEXTCHAR(start_match); }
4711      else      else
4712        while (start_match < end_subject && *start_match != first_byte)        while (start_match < end_subject && *start_match != first_byte)
4713          start_match++;          { NEXTCHAR(start_match); }
4714      }      }
4715    
4716    /* Or to just after a linebreak for a multiline match if possible */    /* Or to just after a linebreak for a multiline match if possible */
4717    
4718    else if (startline)    else if (startline)
4719      {      {
4720      if (start_match >= md->start_subject + md->nllen +      if (start_match > md->start_subject + start_offset)
           start_offset)  
4721        {        {
4722        while (start_match <= end_subject &&        while (start_match < end_subject && !WAS_NEWLINE(start_match))
4723               !IS_NEWLINE(start_match - md->nllen))          { NEXTCHAR(start_match); }
4724    
4725          /* If we have just passed a CR and the newline option is ANY or ANYCRLF,
4726          and we are now at a LF, advance the match position by one more character.
4727          */
4728    
4729          if (start_match[-1] == '\r' &&
4730               (md->nltype == NLTYPE_ANY || md->nltype == NLTYPE_ANYCRLF) &&
4731               start_match < end_subject &&
4732               *start_match == '\n')
4733          start_match++;          start_match++;
4734        }        }
4735      }      }
# Line 3769  do Line 4741  do
4741      while (start_match < end_subject)      while (start_match < end_subject)
4742        {        {
4743        register unsigned int c = *start_match;        register unsigned int c = *start_match;
4744        if ((start_bits[c/8] & (1 << (c&7))) == 0) start_match++; else break;        if ((start_bits[c/8] & (1 << (c&7))) == 0)
4745            { NEXTCHAR(start_match); }
4746          else break;
4747        }        }
4748      }      }
4749    
# Line 3793  do Line 4767  do
4767    
4768    HOWEVER: when the subject string is very, very long, searching to its end can    HOWEVER: when the subject string is very, very long, searching to its end can
4769    take a long time, and give bad performance on quite ordinary patterns. This    take a long time, and give bad performance on quite ordinary patterns. This
4770    showed up when somebody was matching /^C/ on a 32-megabyte string... so we    showed up when somebody was matching something like /^\d+C/ on a 32-megabyte
4771    don't do this when the string is sufficiently long.    string... so we don't do this when the string is sufficiently long.
4772    
4773    ALSO: this processing is disabled when partial matching is requested.    ALSO: this processing is disabled when partial matching is requested.
4774    */    */
# Line 3826  do Line 4800  do
4800            }            }
4801          }          }
4802    
4803        /* If we can't find the required character, break the matching loop */        /* If we can't find the required character, break the matching loop,
4804          forcing a match failure. */
4805    
4806        if (p >= end_subject) break;        if (p >= end_subject)
4807            {
4808            rc = MATCH_NOMATCH;
4809            break;
4810            }
4811    
4812        /* If we have found the required character, save the point where we        /* If we have found the required character, save the point where we
4813        found it, so that we don't search again next time round the loop if        found it, so that we don't search again next time round the loop if
# Line 3838  do Line 4817  do
4817        }        }
4818      }      }
4819    
4820    /* When a match occurs, substrings will be set for all internal extractions;    /* OK, we can now run the match. */
4821    we just need to set up the whole thing as substring 0 before returning. If  
4822    there were too many extractions, set the return code to zero. In the case    md->start_match_ptr = start_match;
   where we had to get some local store to hold offsets for backreferences, copy  
   those back references that we can. In this case there need not be overflow  
   if certain parts of the pattern were not used. */  
   
   md->start_match = start_match;  
4823    md->match_call_count = 0;    md->match_call_count = 0;
4824      rc = match(start_match, md->start_code, start_match, 2, md, ims, NULL, 0, 0);
4825    
4826    rc = match(start_match, md->start_code, 2, md, ims, NULL, match_isgroup, 0);    switch(rc)
   
   /* When the result is no match, if the subject's first character was a  
   newline and the PCRE_FIRSTLINE option is set, break (which will return  
   PCRE_ERROR_NOMATCH). The option requests that a match occur before the first  
   newline in the subject. Otherwise, advance the pointer to the next character  
   and continue - but the continuation will actually happen only when the  
   pattern is not anchored. */  
   
   if (rc == MATCH_NOMATCH)  
4827      {      {
4828      if (firstline &&      /* NOMATCH and PRUNE advance by one character. THEN at this level acts
4829          start_match <= md->end_subject - md->nllen &&      exactly like PRUNE. */
4830          IS_NEWLINE(start_match))  
4831        break;      case MATCH_NOMATCH:
4832      start_match++;      case MATCH_PRUNE:
4833        case MATCH_THEN:
4834        new_start_match = start_match + 1;
4835  #ifdef SUPPORT_UTF8  #ifdef SUPPORT_UTF8
4836      if (md->utf8)      if (utf8)
4837        while(start_match < end_subject && (*start_match & 0xc0) == 0x80)        while(new_start_match < end_subject && (*new_start_match & 0xc0) == 0x80)
4838          start_match++;          new_start_match++;
4839  #endif  #endif
4840      continue;      break;
     }  
4841    
4842    if (rc != MATCH_MATCH)      /* SKIP passes back the next starting point explicitly. */
4843      {  
4844      DPRINTF((">>>> error: returning %d\n", rc));      case MATCH_SKIP:
4845      return rc;      new_start_match = md->start_match_ptr;
4846        break;
4847    
4848        /* COMMIT disables the bumpalong, but otherwise behaves as NOMATCH. */
4849    
4850        case MATCH_COMMIT:
4851        rc = MATCH_NOMATCH;
4852        goto ENDLOOP;
4853    
4854        /* Any other return is some kind of error. */
4855    
4856        default:
4857        goto ENDLOOP;
4858      }      }
4859    
4860    /* We have a match! Copy the offset information from temporary store if    /* Control reaches here for the various types of "no match at this point"
4861    necessary */    result. Reset the code to MATCH_NOMATCH for subsequent checking. */
4862    
4863      rc = MATCH_NOMATCH;
4864    
4865      /* If PCRE_FIRSTLINE is set, the match must happen before or at the first
4866      newline in the subject (though it may continue over the newline). Therefore,
4867      if we have just failed to match, starting at a newline, do not continue. */
4868    
4869      if (firstline && IS_NEWLINE(start_match)) break;
4870    
4871      /* Advance to new matching position */
4872