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help / color / mirror / Atom feedFrom: Alvaro Herrera <[email protected]>
Subject: [PATCH 9/9] Fix crash in multirange_intersect_multirange_internal
Date: Thu, 26 Sep 2019 18:01:04 -0300
---
src/backend/utils/adt/multirangetypes.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/src/backend/utils/adt/multirangetypes.c b/src/backend/utils/adt/multirangetypes.c
index c85f5dc90d..7717acb3b1 100644
--- a/src/backend/utils/adt/multirangetypes.c
+++ b/src/backend/utils/adt/multirangetypes.c
@@ -1123,7 +1123,8 @@ multirange_intersect_multirange(PG_FUNCTION_ARGS)
MultirangeType *
multirange_intersect_multirange_internal(Oid mltrngtypoid, TypeCacheEntry *rangetyp,
- int32 range_count1, RangeType **ranges1, int32 range_count2, RangeType **ranges2)
+ int32 range_count1, RangeType **ranges1,
+ int32 range_count2, RangeType **ranges2)
{
RangeType *r1;
RangeType *r2;
@@ -1132,6 +1133,9 @@ multirange_intersect_multirange_internal(Oid mltrngtypoid, TypeCacheEntry *range
int32 i1;
int32 i2;
+ if (range_count1 == 0 || range_count2 == 0)
+ return make_multirange(mltrngtypoid, rangetyp, 0, NULL);
+
/*
* Worst case is a stitching pattern like this:
*
--
2.17.1
--G4iJoqBmSsgzjUCe--
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Subject: Re: [PATCH 9/9] Fix crash in multirange_intersect_multirange_internal
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