1 // RUN: %clang_cc1 -fsyntax-only -Wno-error=incompatible-ms-struct -verify -triple i686-apple-darwin9 -std=c++11 %s
2 // RUN: %clang_cc1 -fsyntax-only -Wno-error=incompatible-ms-struct -verify -triple armv7-apple-darwin9 -std=c++11 %s
3 // RUN: %clang_cc1 -fsyntax-only -DTEST_FOR_ERROR -verify -triple armv7-apple-darwin9 -std=c++11 %s
4 
5 #pragma ms_struct on
6 
7 struct A {
8   unsigned long a:4;
9   unsigned char b;
10 };
11 
12 struct B : public A {
13 #ifdef TEST_FOR_ERROR
14   // expected-error@-2 {{ms_struct may not produce Microsoft-compatible layouts for classes with base classes or virtual functions}}
15 #else
16   // expected-warning@-4 {{ms_struct may not produce Microsoft-compatible layouts for classes with base classes or virtual functions}}
17 #endif
18   unsigned long c:16;
19 	int d;
20   B();
21 };
22 
23 static_assert(__builtin_offsetof(B, d) == 12,
24   "We can't allocate the bitfield into the padding under ms_struct");
25 
26 // rdar://16178895
27 struct C {
28 #ifdef TEST_FOR_ERROR
29   // expected-error@-2 {{ms_struct may not produce Microsoft-compatible layouts for classes with base classes or virtual functions}}
30 #else
31   // expected-warning@-4 {{ms_struct may not produce Microsoft-compatible layouts for classes with base classes or virtual functions}}
32 #endif
33   virtual void foo();
34   long long n;
35 };
36 
37 static_assert(__builtin_offsetof(C, n) == 8,
38               "long long field in ms_struct should be 8-byte aligned");
39