diff options
Diffstat (limited to 'src/backend/regex/regcomp.c')
| -rw-r--r-- | src/backend/regex/regcomp.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/backend/regex/regcomp.c b/src/backend/regex/regcomp.c index 1f7fa513b26..3c7627a955e 100644 --- a/src/backend/regex/regcomp.c +++ b/src/backend/regex/regcomp.c @@ -150,6 +150,8 @@ static void delsub(struct nfa *, struct state *, struct state *); static void deltraverse(struct nfa *, struct state *, struct state *); static void dupnfa(struct nfa *, struct state *, struct state *, struct state *, struct state *); static void duptraverse(struct nfa *, struct state *, struct state *); +static void removeconstraints(struct nfa *, struct state *, struct state *); +static void removetraverse(struct nfa *, struct state *); static void cleartraverse(struct nfa *, struct state *); static struct state *single_color_transition(struct state *, struct state *); static void specialcolors(struct nfa *); @@ -1182,6 +1184,10 @@ parseqatom(struct vars *v, dupnfa(v->nfa, v->subs[subno]->begin, v->subs[subno]->end, atom->begin, atom->end); NOERR(); + + /* The backref node's NFA should not enforce any constraints */ + removeconstraints(v->nfa, atom->begin, atom->end); + NOERR(); } /* |