Entering the main source file in the preprocessor can fail if the
source file has been changed. Handle that failure more gracefully.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@98727 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Frontend/CacheTokens.cpp b/lib/Frontend/CacheTokens.cpp
index 02d6cec..199be3d 100644
--- a/lib/Frontend/CacheTokens.cpp
+++ b/lib/Frontend/CacheTokens.cpp
@@ -549,7 +549,8 @@
// Lex through the entire file. This will populate SourceManager with
// all of the header information.
Token Tok;
- PP.EnterMainSourceFile();
+ if (PP.EnterMainSourceFile())
+ return;
do { PP.Lex(Tok); } while (Tok.isNot(tok::eof));
// Generate the PTH file.