xref: /aosp_15_r20/external/clang/test/SemaCXX/pragma-pack.cpp (revision 67e74705e28f6214e480b399dd47ea732279e315)
1*67e74705SXin Li // RUN: %clang_cc1 -triple i686-apple-darwin9 -fsyntax-only -verify %s
2*67e74705SXin Li // expected-no-diagnostics
3*67e74705SXin Li 
4*67e74705SXin Li namespace rdar8745206 {
5*67e74705SXin Li 
6*67e74705SXin Li struct Base {
7*67e74705SXin Li   int i;
8*67e74705SXin Li };
9*67e74705SXin Li 
10*67e74705SXin Li #pragma pack(push, 1)
11*67e74705SXin Li struct Sub : public Base {
12*67e74705SXin Li   char c;
13*67e74705SXin Li };
14*67e74705SXin Li #pragma pack(pop)
15*67e74705SXin Li 
16*67e74705SXin Li int check[sizeof(Sub) == 5 ? 1 : -1];
17*67e74705SXin Li 
18*67e74705SXin Li }
19*67e74705SXin Li 
20*67e74705SXin Li namespace check2 {
21*67e74705SXin Li 
22*67e74705SXin Li struct Base {
23*67e74705SXin Li   virtual ~Base();
24*67e74705SXin Li   int x;
25*67e74705SXin Li };
26*67e74705SXin Li 
27*67e74705SXin Li #pragma pack(push, 1)
28*67e74705SXin Li struct Sub : virtual Base {
29*67e74705SXin Li   char c;
30*67e74705SXin Li };
31*67e74705SXin Li #pragma pack(pop)
32*67e74705SXin Li 
33*67e74705SXin Li int check[sizeof(Sub) == 13 ? 1 : -1];
34*67e74705SXin Li 
35*67e74705SXin Li }
36*67e74705SXin Li 
37*67e74705SXin Li namespace llvm_support_endian {
38*67e74705SXin Li 
39*67e74705SXin Li template<typename, bool> struct X;
40*67e74705SXin Li 
41*67e74705SXin Li #pragma pack(push)
42*67e74705SXin Li #pragma pack(1)
43*67e74705SXin Li template<typename T> struct X<T, true> {
44*67e74705SXin Li   T t;
45*67e74705SXin Li };
46*67e74705SXin Li #pragma pack(pop)
47*67e74705SXin Li 
48*67e74705SXin Li #pragma pack(push)
49*67e74705SXin Li #pragma pack(2)
50*67e74705SXin Li template<> struct X<long double, true> {
51*67e74705SXin Li   long double c;
52*67e74705SXin Li };
53*67e74705SXin Li #pragma pack(pop)
54*67e74705SXin Li 
55*67e74705SXin Li int check1[__alignof(X<int, true>) == 1 ? 1 : -1];
56*67e74705SXin Li int check2[__alignof(X<long double, true>) == 2 ? 1 : -1];
57*67e74705SXin Li 
58*67e74705SXin Li }
59