diff options
Diffstat (limited to 'regex.c')
| -rw-r--r-- | regex.c | 47 |
1 files changed, 22 insertions, 25 deletions
@@ -370,6 +370,7 @@ enum regexpcode duplicate, /* Match a duplicate of something remembered. Followed by one byte containing the index of the memory register. */ + fail, /* always fails. */ wordchar, /* Matches any word-constituent character. */ notwordchar, /* Matches any char that is not a word-constituent. */ wordbeg, /* Succeeds if at word beginning. */ @@ -2246,32 +2247,23 @@ re_compile_pattern(pattern, size, bufp) case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9': - { - const char *p_save; - - PATUNFETCH; - p_save = p; + PATUNFETCH; + p0 = p; - had_mbchar = 0; + had_mbchar = 0; + c1 = 0; + GET_UNSIGNED_NUMBER(c1); + if (!ISDIGIT(c)) PATUNFETCH; + + if (9 < c1 && c1 >= regnum) { + /* need to get octal */ + c = scan_oct(p0, 3, &numlen) & 0xff; + p = p0 + numlen; c1 = 0; - GET_UNSIGNED_NUMBER(c1); - if (!ISDIGIT(c)) PATUNFETCH; - - if (c1 >= regnum) { - /* need to get octal */ - p = p_save; - c = scan_oct(p_save, 3, &numlen) & 0xff; - p = p_save + numlen; - c1 = 0; - had_num_literal = 1; - goto numeric_char; - } + had_num_literal = 1; + goto numeric_char; } - /* Can't back reference to a subexpression if inside of it. */ - for (stackt = stackp - 2; stackt > stackb; stackt -= 5) - if (*stackt == c1) - goto normal_char; laststart = b; BUFPUSH(duplicate); BUFPUSH(c1); @@ -3736,11 +3728,16 @@ re_match(bufp, string_arg, size, pos, regs) int regno = *p++; /* Get which register to match against */ register unsigned char *d2, *dend2; - if (IS_ACTIVE(reg_info[regno])) break; +#if 0 + /* Check if corresponding group is still open */ + if (IS_ACTIVE(reg_info[regno])) goto fail; /* Where in input to try to start matching. */ d2 = regstart[regno]; - if (REG_UNSET(d2)) break; +#else + d2 = IS_ACTIVE(reg_info[regno])?old_regstart[regno]:regstart[regno]; +#endif + if (REG_UNSET(d2)) goto fail; /* Where to stop matching; if both the place to start and the place to stop matching are in the same string, then @@ -3748,7 +3745,7 @@ re_match(bufp, string_arg, size, pos, regs) the end of the first string. */ dend2 = regend[regno]; - if (REG_UNSET(dend2)) break; + if (REG_UNSET(dend2)) goto fail; for (;;) { /* At end of register contents => success */ if (d2 == dend2) break; |