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Commite83e098

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Fix use-after-free bug when renaming constraints
This is an oversight from recent commitb13fd34. While on it, tweakthe previous test with a better name for the renamed primary key.Detected by buildfarm member prion which forces relation cache releasewith -DRELCACHE_FORCE_RELEASE. Back-patch down to 9.4 as the previouscommit.
1 parent25b8094 commite83e098

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3 files changed

+4
-4
lines changed

3 files changed

+4
-4
lines changed

‎src/backend/commands/tablecmds.c

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -3027,12 +3027,12 @@ rename_constraint_internal(Oid myrelid,
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if (targetrelation)
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{
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relation_close(targetrelation,NoLock);/* close rel but keep lock */
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/*
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* Invalidate relcache so as others can see the new constraint name.
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*/
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CacheInvalidateRelcache(targetrelation);
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relation_close(targetrelation,NoLock);/* close rel but keep lock */
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}
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returnaddress;

‎src/test/regress/expected/alter_table.out

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -406,7 +406,7 @@ CREATE TABLE constraint_rename_cache (a int,
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ALTER TABLE constraint_rename_cache
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RENAME CONSTRAINT chk_a TO chk_a_new;
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ALTER TABLE constraint_rename_cache
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RENAME CONSTRAINT constraint_rename_cache_pkey TOchk_a_gt_zero;
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RENAME CONSTRAINT constraint_rename_cache_pkey TOconstraint_rename_pkey_new;
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CREATE TABLE like_constraint_rename_cache
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(LIKE constraint_rename_cache INCLUDING ALL);
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\d like_constraint_rename_cache

‎src/test/regress/sql/alter_table.sql

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -308,7 +308,7 @@ CREATE TABLE constraint_rename_cache (a int,
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ALTERTABLE constraint_rename_cache
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RENAMECONSTRAINT chk_a TO chk_a_new;
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ALTERTABLE constraint_rename_cache
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RENAMECONSTRAINT constraint_rename_cache_pkey TOchk_a_gt_zero;
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RENAMECONSTRAINT constraint_rename_cache_pkey TOconstraint_rename_pkey_new;
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CREATETABLElike_constraint_rename_cache
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(LIKE constraint_rename_cache INCLUDING ALL);
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\d like_constraint_rename_cache

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