lib/pcre/pcre_compile.c

485   "lookbehind assertion is not fixed length\0"
1659 for a fixed first character, or an anchoring op code etc. It skips over things
1710 *        Find the fixed length of a branch       *
1713 /* Scan a branch and compute the fixed length of subject that will match it,
1714 if the length is fixed. This is needed for dealing with backward assertions.
1731 Returns:   the fixed length,
1732              or -1 if there is no fixed length,
1761     are not of fixed length. */
1794     /* A true recursion implies not fixed length, but a subroutine call may
2152     /* Add in the fixed length from the table */
2297     /* Add in the fixed length from the table */
2818 is adjacent to a fixed character.
3815   /* Add in the fixed length from the table */
3995 that is referenced. This means that groups can be replicated for fixed
4526 matches a non-fixed char first char; reqchar just remains unset if we never
4706         if (IS_NEWLINE(ptr))         /* For non-fixed-length newline cases, */
5702           if (IS_NEWLINE(p))         /* For non-fixed-length newline cases, */
7306           issue is fixed "properly" in PCRE2. As PCRE1 is now in maintenance
7316           (Again, this is fixed "properly" in PCRE2. */
8432     /* If lookbehind, check that this branch matches a fixed-length string, and
8446       DPRINTF(("fixed length = %d\n", fixed_length));
8806 *       Check for asserted fixed first char      *
8823 Returns:     the fixed first char, or 0 with REQ_NONE in flags
9246 current code allows for fixed one- or two-byte sequences, plus "any" and
9533 because they may contain forward references. Actual recursions cannot be fixed
9535 OP_RECURSE that are not fixed length get a diagnosic with a useful offset. The
9536 exceptional ones forgo this. We scan the pattern to check that they are fixed
9561       DPRINTF(("fixed length = %d\n", fixed_length));