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-rw-r--r--src/backend/regex/rege_dfa.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/backend/regex/rege_dfa.c b/src/backend/regex/rege_dfa.c
index 18f87c69d47..1d79d734468 100644
--- a/src/backend/regex/rege_dfa.c
+++ b/src/backend/regex/rege_dfa.c
@@ -604,6 +604,8 @@ lastcold(struct vars *v,
/*
* newdfa - set up a fresh DFA
+ *
+ * Returns NULL (and sets v->err) on failure.
*/
static struct dfa *
newdfa(struct vars *v,