r304568 - [Modules] Fix use after scope.

[Benjamin Kramer via cfe-commits]

Author: d0k
Date: Fri Jun  2 12:30:24 2017
New Revision: 304568

URL: http://llvm.org/viewvc/llvm-project?rev=304568&view=rev
Log:
[Modules] Fix use after scope.

Found by asan.

Modified:
    cfe/trunk/lib/Serialization/ASTWriter.cpp

Modified: cfe/trunk/lib/Serialization/ASTWriter.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Serialization/ASTWriter.cpp?rev=304568&r1=304567&r2=304568&view=diff
==============================================================================
--- cfe/trunk/lib/Serialization/ASTWriter.cpp (original)
+++ cfe/trunk/lib/Serialization/ASTWriter.cpp Fri Jun  2 12:30:24 2017
@@ -1989,6 +1989,7 @@ void ASTWriter::WriteHeaderSearch(const
   // have resolved them before we get here, but not necessarily: we might be
   // compiling a preprocessed module, where there is no requirement for the
   // original files to exist any more.
+  const HeaderFileInfo Empty; // So we can take a reference.
   if (WritingModule) {
     llvm::SmallVector<Module *, 16> Worklist(1, WritingModule);
     while (!Worklist.empty()) {
@@ -2027,7 +2028,7 @@ void ASTWriter::WriteHeaderSearch(const
           FilenameDup, *U.Size, IncludeTimestamps ? *U.ModTime : 0
         };
         HeaderFileInfoTrait::data_type Data = {
-          {}, {}, {M, ModuleMap::headerKindToRole(U.Kind)}
+          Empty, {}, {M, ModuleMap::headerKindToRole(U.Kind)}
         };
         // FIXME: Deal with cases where there are multiple unresolved header
         // directives in different submodules for the same header.