Fix PR5633 by making the preprocessor handle the case where we can

stat a file but where mmaping it fails.  In this case, we emit an
error like:
t.c:1:10: fatal error: error opening file '../../foo.h'

instead of "cannot find file".



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@90110 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 3 insertions, 3 deletions

diff --git a/include/clang/Lex/Preprocessor.h b/include/clang/Lex/Preprocessor.h
index 1c0036e3ed..edd34b7189 100644
--- a/include/clang/Lex/Preprocessor.h
+++ b/include/clang/Lex/Preprocessor.h
@@ -329,9 +329,9 @@ public:
   void EnterMainSourceFile();
 
   /// EnterSourceFile - Add a source file to the top of the include stack and
-  /// start lexing tokens from it instead of the current buffer.  If isMainFile
-  /// is true, this is the main file for the translation unit.
-  void EnterSourceFile(FileID CurFileID, const DirectoryLookup *Dir);
+  /// start lexing tokens from it instead of the current buffer.  Return true
+  /// on failure.
+  bool EnterSourceFile(FileID CurFileID, const DirectoryLookup *Dir);
 
   /// EnterMacro - Add a Macro to the top of the include stack and start lexing
   /// tokens from it instead of the current buffer.  Args specifies the