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-rw-r--r--Source/cmMakefile.cxx4
1 files changed, 4 insertions, 0 deletions
diff --git a/Source/cmMakefile.cxx b/Source/cmMakefile.cxx
index 25ccbc7..47a6d2e 100644
--- a/Source/cmMakefile.cxx
+++ b/Source/cmMakefile.cxx
@@ -3458,6 +3458,10 @@ void cmMakefile::SetProperty(const char* prop, const char* value)
if (propname == "INCLUDE_DIRECTORIES")
{
this->IncludeDirectoriesEntries.clear();
+ if (!value)
+ {
+ return;
+ }
cmListFileBacktrace lfbt;
this->GetBacktrace(lfbt);
this->IncludeDirectoriesEntries.push_back(