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cmTarget: Detect and diagnose recursion in GetOutputInfo

This commit is contained in:
Robert Goulet 2015-08-11 15:18:39 -04:00 committed by Brad King
parent 422d3f68de
commit e36a05fd7f
1 changed files with 21 additions and 3 deletions
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24
Source/cmTarget.cxx
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@ -66,6 +66,8 @@ struct cmTarget::OutputInfo
std::string OutDir;
std::string ImpDir;
std::string PdbDir;
bool empty() const
{ return OutDir.empty() && ImpDir.empty() && PdbDir.empty(); }
};
//----------------------------------------------------------------------------
@ -2609,19 +2611,35 @@ cmTarget::OutputInfo const* cmTarget::GetOutputInfo(
config_upper = cmSystemTools::UpperCase(config);
}
typedef cmTargetInternals::OutputInfoMapType OutputInfoMapType;
OutputInfoMapType::const_iterator i =
OutputInfoMapType::iterator i =
this->Internal->OutputInfoMap.find(config_upper);
if(i == this->Internal->OutputInfoMap.end())
{
// Add empty info in map to detect potential recursion.
OutputInfo info;
OutputInfoMapType::value_type entry(config_upper, info);
i = this->Internal->OutputInfoMap.insert(entry).first;
// Compute output directories.
this->ComputeOutputDir(config, false, info.OutDir);
this->ComputeOutputDir(config, true, info.ImpDir);
if(!this->ComputePDBOutputDir("PDB", config, info.PdbDir))
{
info.PdbDir = info.OutDir;
}
OutputInfoMapType::value_type entry(config_upper, info);
i = this->Internal->OutputInfoMap.insert(entry).first;
// Now update the previously-prepared map entry.
i->second = info;
}
else if(i->second.empty())
{
// An empty map entry indicates we have been called recursively
// from the above block.
this->Makefile->GetCMakeInstance()->IssueMessage(
cmake::FATAL_ERROR,
"Target '" + this->GetName() + "' OUTPUT_DIRECTORY depends on itself.",
this->GetBacktrace());
return 0;
}
return &i->second;
}