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sync: syncObject may be None in SyncInitTrigger 

And often is, especially when called from ProcSyncCreateAlarm.
Crashing in this case seems unwise.

Signed-off-by: Keith Packard <keithp@keithp.com>
This commit is contained in:
Keith Packard 2010-12-06 20:38:14 -08:00
parent 0d01b66df9
commit 435361bd73
1 changed files with 2 additions and 2 deletions
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4
Xext/sync.c
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@ -296,7 +296,7 @@ SyncInitTrigger(ClientPtr client, SyncTrigger *pTrigger, XID syncObject,
/* if system counter, ask it what the current value is */ /* if system counter, ask it what the current value is */
if (SYNC_COUNTER == pSync->type) if (pSync && SYNC_COUNTER == pSync->type)
{ {
pCounter = (SyncCounter *)pSync; pCounter = (SyncCounter *)pSync;
@ -320,7 +320,7 @@ SyncInitTrigger(ClientPtr client, SyncTrigger *pTrigger, XID syncObject,
if (changes & XSyncCATestType) if (changes & XSyncCATestType)
{ {
if (SYNC_FENCE == pSync->type) if (pSync && SYNC_FENCE == pSync->type)
{ {
pTrigger->CheckTrigger = SyncCheckTriggerFence; pTrigger->CheckTrigger = SyncCheckTriggerFence;
} }