Allow ASTFile to be reset to null

Which we do in removeModules().

llvm-svn: 205491

diff --git a/clang/include/clang/Basic/Module.h b/clang/include/clang/Basic/Module.h
index 3e5f05cfeda90ee41cc60396de6299edda7c1a8e..1f7f71d54be6ae4061181cd45fc36135ad98d5f3 100644 (file)
--- a/clang/include/clang/Basic/Module.h
+++ b/clang/include/clang/Basic/Module.h
@@ -341,7 +341,8 @@ public:
 
   /// \brief Set the serialized AST file for the top-level module of this module.
   void setASTFile(const FileEntry *File) {
-    assert((getASTFile() == 0 || getASTFile() == File) && "file path changed");
+    assert((File == 0 || getASTFile() == 0 || getASTFile() == File) &&
+           "file path changed");
     getTopLevelModule()->ASTFile = File;
   }