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Merge topic 'fix-read-after-free'

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5b2c2d2f Merge branch 'backport-fix-read-after-free' into fix-read-after-free
23ffb72a cmake: Fix read-after-free while checking command-line arguments
fe44f057 cmake: Fix read-after-free while checking command-line arguments
This commit is contained in:
Brad King
2014-06-13 15:45:07 -04:00
committed by CMake Topic Stage
parent 38befe3998 5b2c2d2fda
commit d7bbfa41f6
1 changed files with 13 additions and 5 deletions
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18
Source/cmake.cxx
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@@ -343,16 +343,24 @@ bool cmake::SetCacheArgs(const std::vector<std::string>& args)
// The value is transformed if it is a filepath for example, so
// we can't compare whether the value is already in the cache until
// after we call AddCacheEntry.
const char *cachedValue =
this->CacheManager->GetCacheValue(var);
bool haveValue = false;
std::string cachedValue;
if(this->WarnUnusedCli)
{
if(const char *v = this->CacheManager->GetCacheValue(var))
{
haveValue = true;
cachedValue = v;
}
}
this->CacheManager->AddCacheEntry(var, value.c_str(),
"No help, variable specified on the command line.", type);
if(this->WarnUnusedCli)
{
if (!cachedValue
|| strcmp(this->CacheManager->GetCacheValue(var),
cachedValue) != 0)
if (!haveValue ||
cachedValue != this->CacheManager->GetCacheValue(var))
{
this->WatchUnusedCli(var);
}