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-rw-r--r--clang/lib/Lex/Preprocessor.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/clang/lib/Lex/Preprocessor.cpp b/clang/lib/Lex/Preprocessor.cpp
index f7f63ee01fb..06e5685a8b6 100644
--- a/clang/lib/Lex/Preprocessor.cpp
+++ b/clang/lib/Lex/Preprocessor.cpp
@@ -135,6 +135,7 @@ void Preprocessor::Initialize(const TargetInfo &Target) {
// Macro expansion is enabled.
DisableMacroExpansion = false;
InMacroArgs = false;
+ InMacroArgPreExpansion = false;
NumCachedTokenLexers = 0;
CachedLexPos = 0;
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