Fix uninitialized value bug discovered buy msan buildbot.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@191292 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Lex/ModuleMap.cpp b/lib/Lex/ModuleMap.cpp
index 0f12af361a45acb006ff4e3484c126c3cdffe6a0..a10679af158726bf128c83baa0f64e27c701ed19 100644 (file)
--- a/lib/Lex/ModuleMap.cpp
+++ b/lib/Lex/ModuleMap.cpp
@@ -87,7 +87,7 @@ ModuleMap::ModuleMap(FileManager &FileMgr, DiagnosticConsumer &DC,
                      const LangOptions &LangOpts, const TargetInfo *Target,
                      HeaderSearch &HeaderInfo)
   : LangOpts(LangOpts), Target(Target), HeaderInfo(HeaderInfo),
-    BuiltinIncludeDir(0), CompilingModule(0)
+    BuiltinIncludeDir(0), CompilingModule(0), SourceModule(0)
 {
   IntrusiveRefCntPtr<DiagnosticIDs> DiagIDs(new DiagnosticIDs);
   Diags = IntrusiveRefCntPtr<DiagnosticsEngine>(