Add -std=c++1z flag for C++17 features.

llvm-svn: 211030
diff --git a/clang/test/Preprocessor/init.c b/clang/test/Preprocessor/init.c
index 2c5b736..ed08854 100644
--- a/clang/test/Preprocessor/init.c
+++ b/clang/test/Preprocessor/init.c
@@ -9,6 +9,16 @@
 // BLOCKS:#define __block __attribute__((__blocks__(byref)))
 //
 //
+// RUN: %clang_cc1 -x c++ -std=c++1z -E -dM < /dev/null | FileCheck -check-prefix CXX1Z %s
+//
+// CXX1Z:#define __GNUG__
+// CXX1Z:#define __GXX_EXPERIMENTAL_CXX0X__ 1
+// CXX1Z:#define __GXX_RTTI 1
+// CXX1Z:#define __GXX_WEAK__ 1
+// CXX1Z:#define __cplusplus 201406L
+// CXX1Z:#define __private_extern__ extern
+//
+//
 // RUN: %clang_cc1 -x c++ -std=c++1y -E -dM < /dev/null | FileCheck -check-prefix CXX1Y %s
 //
 // CXX1Y:#define __GNUG__
@@ -85,6 +95,14 @@
 // FREESTANDING:#define __STDC_HOSTED__ 0
 //
 //
+// RUN: %clang_cc1 -x c++ -std=gnu++1z -E -dM < /dev/null | FileCheck -check-prefix GXX1Z %s
+//
+// GXX1Z:#define __GNUG__
+// GXX1Z:#define __GXX_WEAK__ 1
+// GXX1Z:#define __cplusplus 201406L
+// GXX1Z:#define __private_extern__ extern
+//
+//
 // RUN: %clang_cc1 -x c++ -std=gnu++1y -E -dM < /dev/null | FileCheck -check-prefix GXX1Y %s
 //
 // GXX1Y:#define __GNUG__