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Diffstat (limited to 'src/backend/regex/regprefix.c')
| -rw-r--r-- | src/backend/regex/regprefix.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/backend/regex/regprefix.c b/src/backend/regex/regprefix.c index e2fbad7a8a9..ec435b6f5f6 100644 --- a/src/backend/regex/regprefix.c +++ b/src/backend/regex/regprefix.c @@ -77,6 +77,10 @@ pg_regprefix(regex_t *re, assert(g->tree != NULL); cnfa = &g->tree->cnfa; + /* matchall NFAs never have a fixed prefix */ + if (cnfa->flags & MATCHALL) + return REG_NOMATCH; + /* * Since a correct NFA should never contain any exit-free loops, it should * not be possible for our traversal to return to a previously visited NFA |