// RUN: %clang_cc1 -fsyntax-only -verify -std=c11 -Dalignof=__alignof %s
-// RUN: %clang_cc1 -fsyntax-only -verify -std=c11 -Dalignof=_Alignof %s
+// RUN: %clang_cc1 -fsyntax-only -verify -std=c11 -Dalignof=_Alignof -DUSING_C11_SYNTAX %s
_Alignas(3) int align_illegal; //expected-error {{requested alignment is not a power of 2}}
_Alignas(int) char align_big;
_Alignas(1) register char k; // expected-error {{'_Alignas' attribute cannot be applied to a variable with 'register' storage class}}
}
+#ifdef USING_C11_SYNTAX
+// expected-warning@+4{{'_Alignof' applied to an expression is a GNU extension}}
+// expected-warning@+4{{'_Alignof' applied to an expression is a GNU extension}}
+// expected-warning@+4{{'_Alignof' applied to an expression is a GNU extension}}
+#endif
_Static_assert(alignof(align_big) == alignof(int), "k's alignment is wrong");
_Static_assert(alignof(align_small) == 1, "j's alignment is wrong");
_Static_assert(alignof(align_multiple) == 8, "l's alignment is wrong");