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authorUlrich Drepper <drepper@redhat.com>1998-10-09 11:04:04 +0000
committerUlrich Drepper <drepper@redhat.com>1998-10-09 11:04:04 +0000
commita5d1d726704c6e3c4f8457e30cbd3d2840531ee5 (patch)
tree850cd0384fb85c2fab291560a835835d91244a7a /posix/regex.c
parentea1dfb4a9a504558296e216f7f9d95a5f2700db9 (diff)
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Update.
1998-10-09 Ulrich Drepper <drepper@cygnus.com> * sysdeps/i386/i686/pt-machine.h: Remove unused inline definitions.
Diffstat (limited to 'posix/regex.c')
-rw-r--r--posix/regex.c30
1 files changed, 20 insertions, 10 deletions
diff --git a/posix/regex.c b/posix/regex.c
index 98ff8df..5f8e38c 100644
--- a/posix/regex.c
+++ b/posix/regex.c
@@ -5570,7 +5570,8 @@ re_exec (s)
REG_EXTENDED bit in CFLAGS is set; otherwise, to
RE_SYNTAX_POSIX_BASIC;
`newline_anchor' to REG_NEWLINE being set in CFLAGS;
- `fastmap' and `fastmap_accurate' to zero;
+ `fastmap' to an allocated space for the fastmap;
+ `fastmap_accurate' to zero;
`re_nsub' to the number of subexpressions in PATTERN.
PATTERN is the address of the pattern string.
@@ -5609,11 +5610,8 @@ regcomp (preg, pattern, cflags)
preg->allocated = 0;
preg->used = 0;
- /* Don't bother to use a fastmap when searching. This simplifies the
- REG_NEWLINE case: if we used a fastmap, we'd have to put all the
- characters after newlines into the fastmap. This way, we just try
- every character. */
- preg->fastmap = 0;
+ /* Try to allocate space for the fastmap. */
+ preg->fastmap = (char *) malloc (1 << BYTEWIDTH);
if (cflags & REG_ICASE)
{
@@ -5653,6 +5651,19 @@ regcomp (preg, pattern, cflags)
unmatched close-group: both are REG_EPAREN. */
if (ret == REG_ERPAREN) ret = REG_EPAREN;
+ if (ret == REG_NOERROR && preg->fastmap)
+ {
+ /* Compute the fastmap now, since regexec cannot modify the pattern
+ buffer. */
+ if (re_compile_fastmap (preg) == -2)
+ {
+ /* Some error occured while computing the fastmap, just forget
+ about it. */
+ free (preg->fastmap);
+ preg->fastmap = NULL;
+ }
+ }
+
return (int) ret;
}
#ifdef _LIBC
@@ -5701,10 +5712,10 @@ regexec (preg, string, nmatch, pmatch, eflags)
if (want_reg_info)
{
regs.num_regs = nmatch;
- regs.start = TALLOC (nmatch, regoff_t);
- regs.end = TALLOC (nmatch, regoff_t);
- if (regs.start == NULL || regs.end == NULL)
+ regs.start = TALLOC (nmatch * 2, regoff_t);
+ if (regs.start == NULL)
return (int) REG_NOMATCH;
+ regs.end = regs.start + nmatch;
}
/* Perform the searching operation. */
@@ -5728,7 +5739,6 @@ regexec (preg, string, nmatch, pmatch, eflags)
/* If we needed the temporary register info, free the space now. */
free (regs.start);
- free (regs.end);
}
/* We want zero return to mean success, unlike `re_search'. */