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-rw-r--r--src/backend/tsearch/to_tsany.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/backend/tsearch/to_tsany.c b/src/backend/tsearch/to_tsany.c
index e7cd6264db2..31a2e38260a 100644
--- a/src/backend/tsearch/to_tsany.c
+++ b/src/backend/tsearch/to_tsany.c
@@ -242,6 +242,8 @@ to_tsvector_byid(PG_FUNCTION_ARGS)
* number */
if (prs.lenwords < 2)
prs.lenwords = 2;
+ else if (prs.lenwords > MaxAllocSize / sizeof(ParsedWord))
+ prs.lenwords = MaxAllocSize / sizeof(ParsedWord);
prs.curwords = 0;
prs.pos = 0;
prs.words = (ParsedWord *) palloc(sizeof(ParsedWord) * prs.lenwords);