Don't warn about anonymous struct/union in C11.

Also, in C, call this a C11 extension rather than a GNU extension.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149695 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 19 insertions, 0 deletions

diff --git a/test/Sema/anonymous-struct-union-c11.c b/test/Sema/anonymous-struct-union-c11.c
new file mode 100644
index 0000000000..229ee52057
--- /dev/null
+++ b/test/Sema/anonymous-struct-union-c11.c
@@ -0,0 +1,19 @@
+// Check for warnings in non-C11 mode:
+// RUN: %clang_cc1 -fsyntax-only -verify -Wc11-extensions %s
+
+// Expect no warnings in C11 mode:
+// RUN: %clang_cc1 -fsyntax-only -pedantic -Werror -std=c11 %s
+
+struct s {
+  int a;
+  struct { // expected-warning{{anonymous structs are a C11 extension}}
+    int b;
+  };
+};
+
+struct t {
+  int a;
+  union { // expected-warning{{anonymous unions are a C11 extension}}
+    int b;
+  };
+};