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- Add check on null-pointer. Fixes exception in some cases

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svn path=/trunk/; revision=40555
This commit is contained in:
Dmitry Chapyshev 2009-04-17 07:12:21 +00:00
parent 8d8ce081fa
commit 90590ee801
1 changed files with 5 additions and 2 deletions
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7
reactos/lib/rtl/critical.c
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@ -117,12 +117,15 @@ RtlpWaitForCriticalSection(PRTL_CRITICAL_SECTION CriticalSection)
DPRINT("Waiting on Critical Section Event: %p %p\n", DPRINT("Waiting on Critical Section Event: %p %p\n",
CriticalSection, CriticalSection,
CriticalSection->LockSemaphore); CriticalSection->LockSemaphore);
CriticalSection->DebugInfo->EntryCount++;
if (CriticalSection->DebugInfo)
CriticalSection->DebugInfo->EntryCount++;
for (;;) { for (;;) {
/* Increase the number of times we've had contention */ /* Increase the number of times we've had contention */
CriticalSection->DebugInfo->ContentionCount++; if (CriticalSection->DebugInfo)
CriticalSection->DebugInfo->ContentionCount++;
/* Wait on the Event */ /* Wait on the Event */
Status = NtWaitForSingleObject(CriticalSection->LockSemaphore, Status = NtWaitForSingleObject(CriticalSection->LockSemaphore,