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-rw-r--r--src/plugins/cpptools/cppsourceprocessor.cpp3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/plugins/cpptools/cppsourceprocessor.cpp b/src/plugins/cpptools/cppsourceprocessor.cpp
index c5376b9b96..390380e677 100644
--- a/src/plugins/cpptools/cppsourceprocessor.cpp
+++ b/src/plugins/cpptools/cppsourceprocessor.cpp
@@ -245,7 +245,8 @@ QString CppSourceProcessor::resolveFile(const QString &fileName, IncludeType typ
if (it != m_fileNameCache.constEnd())
return it.value();
const QString fn = resolveFile_helper(fileName, type);
- m_fileNameCache.insert(fileName, fn);
+ if (!fn.isEmpty())
+ m_fileNameCache.insert(fileName, fn);
return fn;
}