| // RUN: %clang_cc1 %s -fsyntax-only -verify -triple=x86_64-apple-darwin10 |
| |
| #define CHECK_SIZE(name, size) extern int name##1[sizeof(name) == size ? 1 : -1]; |
| #define CHECK_ALIGN(name, size) extern int name##2[__alignof(name) == size ? 1 : -1]; |
| |
| // Simple tests. |
| struct Test1 { |
| 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}} |
| }; |
| CHECK_SIZE(Test1, 2); |
| CHECK_ALIGN(Test1, 1); |
| |
| struct Test1a { |
| char : 9; // no warning (there's no value to truncate here) |
| }; |
| CHECK_SIZE(Test1a, 2); |
| CHECK_ALIGN(Test1a, 1); |
| |
| struct Test2 { |
| 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}} |
| }; |
| CHECK_SIZE(Test2, 2); |
| CHECK_ALIGN(Test2, 2); |
| |
| struct Test3 { |
| 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}} |
| }; |
| CHECK_SIZE(Test3, 4); |
| CHECK_ALIGN(Test3, 4); |
| |
| struct Test4 { |
| 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}} |
| }; |
| CHECK_SIZE(Test4, 8); |
| CHECK_ALIGN(Test4, 8); |
| |
| struct Test5 { |
| char c : 0x100000001; // expected-warning {{width of bit-field 'c' (4294967297 bits) exceeds the width of its type; value will be truncated to 8 bits}} |
| }; |
| // Size and align don't really matter here, just make sure we don't crash. |
| CHECK_SIZE(Test5, 1); |
| CHECK_ALIGN(Test5, 1); |
| |
| struct Test6 { |
| char c : (unsigned __int128)0xffffffffffffffff + 2; // expected-error {{bit-field 'c' is too wide (18446744073709551617 bits)}} |
| }; |
| // Size and align don't really matter here, just make sure we don't crash. |
| CHECK_SIZE(Test6, 1); |
| CHECK_ALIGN(Test6, 1); |