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Correctly set t_self for heap tuples in expand_tuple

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Commit 16828d5c0 incorrectly set an invalid pointer for t_self for heap
tuples. This patch correctly copies it from the source tuple, and
includes a regression test that relies on it being set correctly.

Backpatch to release 11.

Fixes bug #15448 reported by Tillmann Schulz

Diagnosis and test case by Amit Langote
This commit is contained in:
Andrew Dunstan
2018-10-24 10:45:34 -04:00
parent 374fe86a8f
commit 372102b81d
3 changed files with 23 additions and 1 deletions
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2
src/backend/access/common/heaptuple.c
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@@ -893,7 +893,7 @@ expand_tuple(HeapTuple *targetHeapTuple,
= (HeapTupleHeader) ((char *) *targetHeapTuple + HEAPTUPLESIZE);
(*targetHeapTuple)->t_len = len;
(*targetHeapTuple)->t_tableOid = sourceTuple->t_tableOid;
ItemPointerSetInvalid(&((*targetHeapTuple)->t_self));
(*targetHeapTuple)->t_self = sourceTuple->t_self;
targetTHeader->t_infomask = sourceTHeader->t_infomask;
targetTHeader->t_hoff = hoff;