1*67e74705SXin Li // RUN: %clang_cc1 -triple i686-apple-darwin9 %s -fsyntax-only -verify 2*67e74705SXin Li // expected-no-diagnostics 3*67e74705SXin Li 4*67e74705SXin Li // Stack: [], Alignment: 8 5*67e74705SXin Li 6*67e74705SXin Li #pragma pack(push, 1) 7*67e74705SXin Li // Stack: [8], Alignment: 1 8*67e74705SXin Li 9*67e74705SXin Li #pragma pack(push, 4) 10*67e74705SXin Li // Stack: [8, 1], Alignment: 4 11*67e74705SXin Li 12*67e74705SXin Li // Note that this differs from gcc; pack() in gcc appears to pop the 13*67e74705SXin Li // top stack entry and resets the current alignment. This is both 14*67e74705SXin Li // inconsistent with MSVC, and the gcc documentation. In other cases, 15*67e74705SXin Li // for example changing this to pack(8), I don't even understand what gcc 16*67e74705SXin Li // is doing. 17*67e74705SXin Li 18*67e74705SXin Li #pragma pack() 19*67e74705SXin Li // Stack: [8, 1], Alignment: 8 20*67e74705SXin Li 21*67e74705SXin Li #pragma pack(pop) 22*67e74705SXin Li // Stack: [8], Alignment: 1 23*67e74705SXin Li struct s0 { 24*67e74705SXin Li char f0; 25*67e74705SXin Li short f1; 26*67e74705SXin Li }; 27*67e74705SXin Li int a[sizeof(struct s0) == 3 ? 1 : -1]; 28*67e74705SXin Li 29*67e74705SXin Li #pragma pack(pop) 30*67e74705SXin Li // Stack: [], Alignment: 8 31*67e74705SXin Li struct s1 { 32*67e74705SXin Li char f0; 33*67e74705SXin Li short f1; 34*67e74705SXin Li }; 35*67e74705SXin Li int b[sizeof(struct s1) == 4 ? 1 : -1]; 36