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ENH: do not dereference empty stl vectors

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This commit is contained in:
Bill Hoffman 2006-03-22 17:21:45 -05:00
parent eb773486f3
commit f4e9a5e5ea
1 changed files with 2 additions and 2 deletions
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4
Source/cmExecuteProcessCommand.cxx
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@ -295,11 +295,11 @@ bool cmExecuteProcessCommand::InitialPass(std::vector<std::string> const& args)
cmExecuteProcessCommandFixText(tempError); cmExecuteProcessCommandFixText(tempError);
// Store the output obtained. // Store the output obtained.
if(!output_variable.empty()) if(!output_variable.empty() && tempOutput.size())
{ {
this->Makefile->AddDefinition(output_variable.c_str(), &*tempOutput.begin()); this->Makefile->AddDefinition(output_variable.c_str(), &*tempOutput.begin());
} }
if(!merge_output && !error_variable.empty()) if(!merge_output && !error_variable.empty() && tempError.size())
{ {
this->Makefile->AddDefinition(error_variable.c_str(), &*tempError.begin()); this->Makefile->AddDefinition(error_variable.c_str(), &*tempError.begin());
} }