Add compat/extension warnings for init captures.

llvm-svn: 191609
diff --git a/clang/test/CXX/expr/expr.prim/expr.prim.lambda/p23.cpp b/clang/test/CXX/expr/expr.prim/expr.prim.lambda/p23.cpp
index 083ca1b..4ae34de 100644
--- a/clang/test/CXX/expr/expr.prim/expr.prim.lambda/p23.cpp
+++ b/clang/test/CXX/expr/expr.prim/expr.prim.lambda/p23.cpp
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -fsyntax-only -std=c++11 %s -verify
+// RUN: %clang_cc1 -fsyntax-only -std=c++11 %s -verify -Wno-c++1y-extensions
 // RUN: %clang_cc1 -fsyntax-only -std=c++1y %s -verify
 
 void print();