1*67e74705SXin Li // RUN: %clang_cc1 %s -fsyntax-only -verify -triple=x86_64-apple-darwin10 2*67e74705SXin Li 3*67e74705SXin Li #define CHECK_SIZE(name, size) extern int name##1[sizeof(name) == size ? 1 : -1]; 4*67e74705SXin Li #define CHECK_ALIGN(name, size) extern int name##2[__alignof(name) == size ? 1 : -1]; 5*67e74705SXin Li 6*67e74705SXin Li // Simple tests. 7*67e74705SXin Li struct Test1 { 8*67e74705SXin Li char c : 9; // expected-warning {{width of bit-field 'c' (9 bits) exceeds the width of its type; value will be truncated to 8 bits}} 9*67e74705SXin Li }; 10*67e74705SXin Li CHECK_SIZE(Test1, 2); 11*67e74705SXin Li CHECK_ALIGN(Test1, 1); 12*67e74705SXin Li 13*67e74705SXin Li struct Test2 { 14*67e74705SXin Li char c : 16; // expected-warning {{width of bit-field 'c' (16 bits) exceeds the width of its type; value will be truncated to 8 bits}} 15*67e74705SXin Li }; 16*67e74705SXin Li CHECK_SIZE(Test2, 2); 17*67e74705SXin Li CHECK_ALIGN(Test2, 2); 18*67e74705SXin Li 19*67e74705SXin Li struct Test3 { 20*67e74705SXin Li char c : 32; // expected-warning {{width of bit-field 'c' (32 bits) exceeds the width of its type; value will be truncated to 8 bits}} 21*67e74705SXin Li }; 22*67e74705SXin Li CHECK_SIZE(Test3, 4); 23*67e74705SXin Li CHECK_ALIGN(Test3, 4); 24*67e74705SXin Li 25*67e74705SXin Li struct Test4 { 26*67e74705SXin Li char c : 64; // expected-warning {{width of bit-field 'c' (64 bits) exceeds the width of its type; value will be truncated to 8 bits}} 27*67e74705SXin Li }; 28*67e74705SXin Li CHECK_SIZE(Test4, 8); 29*67e74705SXin Li CHECK_ALIGN(Test4, 8); 30*67e74705SXin Li 31