diff options
Diffstat (limited to 'src/3rdparty/pcre/pcre_exec.c')
| -rw-r--r-- | src/3rdparty/pcre/pcre_exec.c | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/src/3rdparty/pcre/pcre_exec.c b/src/3rdparty/pcre/pcre_exec.c index 788cc76849..c021fe1a4c 100644 --- a/src/3rdparty/pcre/pcre_exec.c +++ b/src/3rdparty/pcre/pcre_exec.c @@ -1376,6 +1376,7 @@ for (;;) break; case OP_DEF: /* DEFINE - always false */ + case OP_FAIL: /* From optimized (?!) condition */ break; /* The condition is an assertion. Call match() to evaluate it - setting @@ -3482,7 +3483,7 @@ for (;;) if (possessive) continue; /* No backtracking */ for(;;) { - if (eptr == pp) goto TAIL_RECURSE; + if (eptr <= pp) goto TAIL_RECURSE; RMATCH(eptr, ecode, offset_top, md, eptrb, RM23); if (rrc != MATCH_NOMATCH) RRETURN(rrc); #ifdef SUPPORT_UCP @@ -3903,7 +3904,7 @@ for (;;) if (possessive) continue; /* No backtracking */ for(;;) { - if (eptr == pp) goto TAIL_RECURSE; + if (eptr <= pp) goto TAIL_RECURSE; RMATCH(eptr, ecode, offset_top, md, eptrb, RM30); if (rrc != MATCH_NOMATCH) RRETURN(rrc); eptr--; @@ -4038,7 +4039,7 @@ for (;;) if (possessive) continue; /* No backtracking */ for(;;) { - if (eptr == pp) goto TAIL_RECURSE; + if (eptr <= pp) goto TAIL_RECURSE; RMATCH(eptr, ecode, offset_top, md, eptrb, RM34); if (rrc != MATCH_NOMATCH) RRETURN(rrc); eptr--; @@ -5609,7 +5610,7 @@ for (;;) if (possessive) continue; /* No backtracking */ for(;;) { - if (eptr == pp) goto TAIL_RECURSE; + if (eptr <= pp) goto TAIL_RECURSE; RMATCH(eptr, ecode, offset_top, md, eptrb, RM44); if (rrc != MATCH_NOMATCH) RRETURN(rrc); eptr--; @@ -5651,12 +5652,17 @@ for (;;) if (possessive) continue; /* No backtracking */ + /* We use <= pp rather than == pp to detect the start of the run while + backtracking because the use of \C in UTF mode can cause BACKCHAR to + move back past pp. This is just palliative; the use of \C in UTF mode + is fraught with danger. */ + for(;;) { int lgb, rgb; PCRE_PUCHAR fptr; - if (eptr == pp) goto TAIL_RECURSE; /* At start of char run */ + if (eptr <= pp) goto TAIL_RECURSE; /* At start of char run */ RMATCH(eptr, ecode, offset_top, md, eptrb, RM45); if (rrc != MATCH_NOMATCH) RRETURN(rrc); @@ -5674,7 +5680,7 @@ for (;;) for (;;) { - if (eptr == pp) goto TAIL_RECURSE; /* At start of char run */ + if (eptr <= pp) goto TAIL_RECURSE; /* At start of char run */ fptr = eptr - 1; if (!utf) c = *fptr; else { @@ -5924,7 +5930,7 @@ for (;;) if (possessive) continue; /* No backtracking */ for(;;) { - if (eptr == pp) goto TAIL_RECURSE; + if (eptr <= pp) goto TAIL_RECURSE; RMATCH(eptr, ecode, offset_top, md, eptrb, RM46); if (rrc != MATCH_NOMATCH) RRETURN(rrc); eptr--; |