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-rw-r--r--src/backend/regex/regexec.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/backend/regex/regexec.c b/src/backend/regex/regexec.c
index d18672c7c7c..8a21f2cb787 100644
--- a/src/backend/regex/regexec.c
+++ b/src/backend/regex/regexec.c
@@ -624,6 +624,9 @@ cdissect(struct vars * v,
/* handy place to check for operation cancel */
if (CANCEL_REQUESTED(v->re))
return REG_CANCEL;
+ /* ... and stack overrun */
+ if (STACK_TOO_DEEP(v->re))
+ return REG_ETOOBIG;
switch (t->op)
{