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Bug 695965: Fix use of uninitialized memory in nsUrlClassifierDBService::CheckClean. r=bent

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This commit is contained in:
Josh Aas 2011-10-20 10:48:11 -04:00
parent cc28dc3790
commit 19088b7535
2 changed files with 3 additions and 1 deletions
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2
toolkit/components/url-classifier/nsUrlClassifierDBService.cpp
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@ -1430,7 +1430,7 @@ nsUrlClassifierDBService::CheckClean(const nsACString &spec,
rv = KeyedHash(fragkey, hostprefix, prefixkey, &codedkey);
NS_ENSURE_SUCCESS(rv, rv);
bool found;
bool found = false;
bool ready = false; /* opportunistic probe */
rv = mPrefixSet->Probe(codedkey, prefixkey, &ready, &found);
NS_ENSURE_SUCCESS(rv, rv);

2
toolkit/components/url-classifier/nsUrlClassifierPrefixSet.cpp
View File

@ -278,6 +278,8 @@ nsUrlClassifierPrefixSet::Probe(PRUint32 aPrefix, PRUint32 aKey,
{
MutexAutoLock lock(mPrefixSetLock);
*aFound = false;
// We might have raced here with a LoadPrefixSet call,
// loading a saved PrefixSet with another key than the one used to probe us.
// This must occur exactly between the GetKey call and the Probe call.