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Fix another recently-changed place that was messing with spinlock-
protected data structures and not using a volatile pointer for same.
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src/backend/storage/lmgr/lwlock.c

Lines changed: 3 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -15,7 +15,7 @@
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* IDENTIFICATION
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* $PostgreSQL: pgsql/src/backend/storage/lmgr/lwlock.c,v 1.32 2005/10/07 21:42:38 tgl Exp $
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* $PostgreSQL: pgsql/src/backend/storage/lmgr/lwlock.c,v 1.33 2005/10/12 16:55:59 tgl Exp $
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*
2020
*-------------------------------------------------------------------------
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*/
@@ -226,7 +226,8 @@ LWLockId
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LWLockAssign(void)
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{
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LWLockId result;
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int *LWLockCounter;
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/* use volatile pointer to prevent code rearrangement */
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volatile int *LWLockCounter;
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LWLockCounter = (int *) ((char *) LWLockArray - 2 * sizeof(int));
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SpinLockAcquire(ShmemLock);

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