diff --git a/lib/Lex/Preprocessor.cpp b/lib/Lex/Preprocessor.cpp
index de70644..38a6919 100644
--- a/lib/Lex/Preprocessor.cpp
+++ b/lib/Lex/Preprocessor.cpp
@@ -49,7 +49,7 @@
                            TargetInfo &target, SourceManager &SM, 
                            HeaderSearch &Headers,
                            IdentifierInfoLookup* IILookup)
-  : Diags(diags), Features(opts), Target(target), FileMgr(Headers.getFileMgr()),
+  : Diags(&diags), Features(opts), Target(target),FileMgr(Headers.getFileMgr()),
     SourceMgr(SM), HeaderInfo(Headers), Identifiers(opts, IILookup),
     CurPPLexer(0), CurDirLookup(0), Callbacks(0) {
   ScratchBuf = new ScratchBuffer(SourceMgr);