1// RUN: %clang_cc1 -triple i686-apple-darwin9 %s -fsyntax-only -verify 2// expected-no-diagnostics 3 4#include <stddef.h> 5 6#pragma pack(4) 7 8// Baseline 9struct s0 { 10 char f0; 11 int f1; 12}; 13extern int a0[offsetof(struct s0, f1) == 4 ? 1 : -1]; 14 15#pragma pack(push, 2) 16struct s1 { 17 char f0; 18 int f1; 19}; 20extern int a1[offsetof(struct s1, f1) == 2 ? 1 : -1]; 21#pragma pack(pop) 22 23#pragma pack(1) 24struct s3_0 { 25 char f0; 26 int f1; 27}; 28#pragma pack() 29struct s3_1 { 30 char f0; 31 int f1; 32}; 33extern int a3_0[offsetof(struct s3_0, f1) == 1 ? 1 : -1]; 34extern int a3_1[offsetof(struct s3_1, f1) == 4 ? 1 : -1]; 35 36// pack(0) is like pack() 37#pragma pack(1) 38struct s4_0 { 39 char f0; 40 int f1; 41}; 42#pragma pack(0) 43struct s4_1 { 44 char f0; 45 int f1; 46}; 47extern int a4_0[offsetof(struct s4_0, f1) == 1 ? 1 : -1]; 48extern int a4_1[offsetof(struct s4_1, f1) == 4 ? 1 : -1]; 49 50void f() { 51 #pragma pack(push, 2) 52 struct s5_0 { 53 char f0; 54 struct s2_4_0 { 55 int f0; 56 } f1; 57 }; 58 #pragma pack(pop) 59 extern int s5_0[offsetof(struct s5_0, f1) == 2 ? 1 : -1]; 60} 61