| Eli Friedman | 5949a02 | 2008-05-30 09:31:38 +0000 | [diff] [blame] | 1 | // RUN: clang %s -fsyntax-only -verify -triple=i686-apple-darwin9 |
| 2 | |
| 3 | #define CHECK_SIZE(kind, name, size) extern int name##1[sizeof(kind name) == size ? 1 : -1]; |
| 4 | #define CHECK_ALIGN(kind, name, size) extern int name##2[__alignof(kind name) == size ? 1 : -1]; |
| 5 | |
| 6 | // Zero-width bit-fields |
| 7 | struct a {char x; int : 0; char y;}; |
| 8 | CHECK_SIZE(struct, a, 5) |
| 9 | CHECK_ALIGN(struct, a, 1) |
| 10 | |
| 11 | union b {char x; int : 0; char y;}; |
| 12 | CHECK_SIZE(union, b, 1) |
| 13 | CHECK_ALIGN(union, b, 1) |
| 14 | |
| 15 | // Unnamed bit-field align |
| 16 | struct c {char x; int : 20;}; |
| 17 | CHECK_SIZE(struct, c, 4) |
| 18 | CHECK_ALIGN(struct, c, 1) |
| 19 | |
| 20 | union d {char x; int : 20;}; |
| 21 | CHECK_SIZE(union, d, 3) |
| 22 | CHECK_ALIGN(union, d, 1) |
| 23 | |
| 24 | // Bit-field packing |
| 25 | struct __attribute__((packed)) e {int x : 4, y : 30, z : 30;}; |
| 26 | CHECK_SIZE(struct, e, 8) |
| 27 | CHECK_ALIGN(struct, e, 1) |
| 28 | |
| 29 | // Alignment on bit-fields |
| 30 | struct f {__attribute((aligned(8))) int x : 30, y : 30, z : 30;}; |
| 31 | CHECK_SIZE(struct, f, 24) |
| 32 | CHECK_ALIGN(struct, f, 8) |