// RUN: %clang_cc1 %s -fsyntax-only -verify -triple=i686-apple-darwin9 #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)