1 // RUN: %clang_cc1 -triple i686-apple-darwin9 %s -fsyntax-only -verify 2 3 // Stack: [], Alignment: 8 4 5 #pragma pack(push, 1) 6 // Stack: [8], Alignment: 1 7 8 #pragma pack(push, 4) 9 // Stack: [8, 1], Alignment: 4 10 11 // Note that this differs from gcc; pack() in gcc appears to pop the 12 // top stack entry and resets the current alignment. This is both 13 // inconsistent with MSVC, and the gcc documentation. In other cases, 14 // for example changing this to pack(8), I don't even understand what gcc 15 // is doing. 16 17 #pragma pack() 18 // Stack: [8, 1], Alignment: 8 19 20 #pragma pack(pop) 21 // Stack: [8], Alignment: 1 22 struct s0 { 23 char f0; 24 short f1; 25 }; 26 int a[sizeof(struct s0) == 3 ? 1 : -1]; 27 28 #pragma pack(pop) 29 // Stack: [], Alignment: 8 30 struct s1 { 31 char f0; 32 short f1; 33 }; 34 int b[sizeof(struct s1) == 4 ? 1 : -1]; 35