1// RUN: %clang_cc1 -triple i686-apple-darwin9 %s -fsyntax-only -verify
2// expected-no-diagnostics
3
4// Stack: [], Alignment: 8
5
6#pragma pack(push, 1)
7// Stack: [8], Alignment: 1
8
9#pragma pack(push, 4)
10// Stack: [8, 1], Alignment: 4
11
12// Note that this differs from gcc; pack() in gcc appears to pop the
13// top stack entry and resets the current alignment. This is both
14// inconsistent with MSVC, and the gcc documentation. In other cases,
15// for example changing this to pack(8), I don't even understand what gcc
16// is doing.
17
18#pragma pack()
19// Stack: [8, 1], Alignment: 8
20
21#pragma pack(pop)
22// Stack: [8], Alignment: 1
23struct s0 {
24  char f0;
25  short f1;
26};
27int a[sizeof(struct s0) == 3 ? 1 : -1];
28
29#pragma pack(pop)
30// Stack: [], Alignment: 8
31struct s1 {
32  char f0;
33  short f1;
34};
35int b[sizeof(struct s1) == 4 ? 1 : -1];
36