| // RUN: %clang_cc1 %s -fsyntax-only -verify -triple=i686-apple-darwin9 |
| // expected-no-diagnostics |
| |
| #define CHECK_SIZE(kind, name, size) extern int name##1[sizeof(kind name) == size ? 1 : -1]; |
| #define CHECK_ALIGN(kind, name, size) extern int name##2[__alignof(kind name) == size ? 1 : -1]; |
| |
| // Zero-width bit-fields |
| struct a {char x; int : 0; char y;}; |
| CHECK_SIZE(struct, a, 5) |
| CHECK_ALIGN(struct, a, 1) |
| |
| union b {char x; int : 0; char y;}; |
| CHECK_SIZE(union, b, 1) |
| CHECK_ALIGN(union, b, 1) |
| |
| // Unnamed bit-field align |
| struct c {char x; int : 20;}; |
| CHECK_SIZE(struct, c, 4) |
| CHECK_ALIGN(struct, c, 1) |
| |
| union d {char x; int : 20;}; |
| CHECK_SIZE(union, d, 3) |
| CHECK_ALIGN(union, d, 1) |
| |
| // Bit-field packing |
| struct __attribute__((packed)) e {int x : 4, y : 30, z : 30;}; |
| CHECK_SIZE(struct, e, 8) |
| CHECK_ALIGN(struct, e, 1) |
| |
| // Alignment on bit-fields |
| struct f {__attribute((aligned(8))) int x : 30, y : 30, z : 30;}; |
| CHECK_SIZE(struct, f, 24) |
| CHECK_ALIGN(struct, f, 8) |
| |
| // Large structure (overflows i32, in bits). |
| struct s0 { |
| char a[0x32100000]; |
| int x:30, y:30; |
| }; |
| |
| CHECK_SIZE(struct, s0, 0x32100008) |
| CHECK_ALIGN(struct, s0, 4) |
| |
