Fix a double-free error that can occur in rare cases where loading

of the precompiled preamble (or any PCH file it depends on) fails
during reparsing.

llvm-svn: 115838

1 files changed, 1 insertions, 0 deletions

diff --git a/clang/lib/Frontend/ASTUnit.cpp b/clang/lib/Frontend/ASTUnit.cpp
index 7b87d3c2687..9ae38b134ae 100644
--- a/clang/lib/Frontend/ASTUnit.cpp
+++ b/clang/lib/Frontend/ASTUnit.cpp
@@ -798,6 +798,7 @@ error:
     PreprocessorOpts.DisablePCHValidation = true;
     PreprocessorOpts.ImplicitPCHInclude = PriorImplicitPCHInclude;
     delete OverrideMainBuffer;
+    SavedMainFileBuffer = 0;
   }
   
   Clang.takeSourceManager();