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| author | Ulrich Drepper <drepper@redhat.com> | 2003-12-16 18:58:47 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2003-12-16 18:58:47 +0000 |
| commit | 457beec8d7835d2f021d8c4ef7a51f22932671f8 (patch) | |
| tree | 75b279dc08c32436014c1e8bd4728ce4354bfbc5 /posix | |
| parent | c0d5034ed1517d6e545d141d697abc2f10528c2c (diff) | |
| download | glibc-457beec8d7835d2f021d8c4ef7a51f22932671f8.tar.gz glibc-457beec8d7835d2f021d8c4ef7a51f22932671f8.tar.xz glibc-457beec8d7835d2f021d8c4ef7a51f22932671f8.zip | |
Update.
2002-12-16 Jakub Jelinek <jakub@redhat.com>
Paolo Bonzini <bonzini@gnu.org>
* posix/regexec.c (group_nodes_into_DFAstates): Never produce
dests_ch items that are empty.
Diffstat (limited to 'posix')
| -rw-r--r-- | posix/regexec.c | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/posix/regexec.c b/posix/regexec.c index 731b49dd57..0c2f7bf3ff 100644 --- a/posix/regexec.c +++ b/posix/regexec.c @@ -3402,30 +3402,36 @@ group_nodes_into_DFAstates (preg, state, dests_node, dests_ch) if (constraint & NEXT_WORD_CONSTRAINT) { + unsigned int any_set = 0; #ifdef RE_ENABLE_I18N if (dfa->mb_cur_max > 1) for (j = 0; j < BITSET_UINTS; ++j) - accepts[j] &= (dfa->word_char[j] | ~dfa->sb_char[j]); + any_set |= (accepts[j] &= (dfa->word_char[j] | ~dfa->sb_char[j])); else #endif for (j = 0; j < BITSET_UINTS; ++j) - accepts[j] &= dfa->word_char[j]; + any_set |= (accepts[j] &= dfa->word_char[j]); + if (!any_set) + continue; } if (constraint & NEXT_NOTWORD_CONSTRAINT) { + unsigned int any_set = 0; #ifdef RE_ENABLE_I18N if (dfa->mb_cur_max > 1) for (j = 0; j < BITSET_UINTS; ++j) - accepts[j] &= ~(dfa->word_char[j] & dfa->sb_char[j]); + any_set |= (accepts[j] &= ~(dfa->word_char[j] & dfa->sb_char[j])); else #endif for (j = 0; j < BITSET_UINTS; ++j) - accepts[j] &= ~dfa->word_char[j]; + any_set |= (accepts[j] &= ~dfa->word_char[j]); + if (!any_set) + continue; } } /* Then divide `accepts' into DFA states, or create a new - state. */ + state. Above, we make sure that accepts is not empty. */ for (j = 0; j < ndests; ++j) { bitset intersec; /* Intersection sets, see below. */ |