diff options
Diffstat (limited to 'src/backend/regex/regexec.c')
| -rw-r--r-- | src/backend/regex/regexec.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/src/backend/regex/regexec.c b/src/backend/regex/regexec.c index c9c73e978b6..5d7415b3c1a 100644 --- a/src/backend/regex/regexec.c +++ b/src/backend/regex/regexec.c @@ -531,9 +531,14 @@ zaptreesubs(struct vars * v, { if (t->op == '(') { - assert(t->subno > 0); - v->pmatch[t->subno].rm_so = -1; - v->pmatch[t->subno].rm_eo = -1; + int n = t->subno; + + assert(n > 0); + if ((size_t) n < v->nmatch) + { + v->pmatch[n].rm_so = -1; + v->pmatch[n].rm_eo = -1; + } } if (t->left != NULL) @@ -543,7 +548,7 @@ zaptreesubs(struct vars * v, } /* - * subset - set any subexpression relevant to a successful subre + * subset - set subexpression match data for a successful subre */ static void subset(struct vars * v, |