<rdar://problem/12368093> Extend module maps with a 'conflict' declaration, and warn when a newly-imported module conflicts with an already-imported module.

llvm-svn: 177577
diff --git a/clang/lib/Sema/SemaDecl.cpp b/clang/lib/Sema/SemaDecl.cpp
index 1cffce0..d046f64 100644
--- a/clang/lib/Sema/SemaDecl.cpp
+++ b/clang/lib/Sema/SemaDecl.cpp
@@ -11826,7 +11826,8 @@
   Consumer.HandleImplicitImportDecl(ImportD);
 
   // Make the module visible.
-  PP.getModuleLoader().makeModuleVisible(Mod, Module::AllVisible, Loc);
+  PP.getModuleLoader().makeModuleVisible(Mod, Module::AllVisible, Loc,
+                                         /*Complain=*/false);
 }
 
 void Sema::ActOnPragmaRedefineExtname(IdentifierInfo* Name,