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Fix bug in pairingheap_SpGistSearchItem_cmp()

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Our item contains only so->numberOfNonNullOrderBys of distances.  Reflect that
in the loop upper bound.

Discussion: https://postgr.es/m/53536807-784c-e029-6e92-6da802ab8d60%40postgrespro.ru
Author: Nikita Glukhov
Backpatch-through: 12
This commit is contained in:
Alexander Korotkov
2019-09-25 01:47:36 +03:00
parent 709d003fbd
commit 90c0987258
1 changed files with 1 additions and 1 deletions
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2
src/backend/access/spgist/spgscan.c
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@@ -56,7 +56,7 @@ pairingheap_SpGistSearchItem_cmp(const pairingheap_node *a,
else
{
/* Order according to distance comparison */
for (i = 0; i < so->numberOfOrderBys; i++)
for (i = 0; i < so->numberOfNonNullOrderBys; i++)
{
if (isnan(sa->distances[i]) && isnan(sb->distances[i]))
continue; /* NaN == NaN */