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-rw-r--r--lib/Lex/Pragma.cpp4
1 files changed, 3 insertions, 1 deletions
diff --git a/lib/Lex/Pragma.cpp b/lib/Lex/Pragma.cpp
index 7975da58b6..a7b289e137 100644
--- a/lib/Lex/Pragma.cpp
+++ b/lib/Lex/Pragma.cpp
@@ -384,7 +384,9 @@ void Preprocessor::HandlePragmaDependency(Token &DependencyTok) {
Lex(DependencyTok);
}
- Message.erase(Message.end()-1);
+ // Remove the trailing ' ' if present.
+ if (!Message.empty())
+ Message.erase(Message.end()-1);
Diag(FilenameTok, diag::pp_out_of_date_dependency) << Message;
}
}