1 // RUN: %clang_cc1 -std=c11 -triple i386-apple-darwin9 -fsyntax-only -verify %s 2 // expected-no-diagnostics 3 4 #define STATIC_ASSERT(cond) _Static_assert(cond, #cond) 5 6 // PR3433 7 #define CHECK_ALIGNMENT(type, name, abi, pref) \ 8 type name; \ 9 STATIC_ASSERT(__alignof__(name) == pref); \ 10 STATIC_ASSERT(__alignof__(type) == pref); \ 11 STATIC_ASSERT(_Alignof(type) == abi) 12 13 CHECK_ALIGNMENT(double, g_double, 4, 8); 14 CHECK_ALIGNMENT(long long, g_longlong, 4, 8); 15 CHECK_ALIGNMENT(unsigned long long, g_ulonglong, 4, 8); 16 CHECK_ALIGNMENT(_Complex double, g_complexdouble, 4, 8); 17 18 // PR6362 19 struct __attribute__((packed)) 20 packed_struct { 21 unsigned int a; 22 }; 23 CHECK_ALIGNMENT(struct packed_struct, g_packedstruct, 1, 1); 24 STATIC_ASSERT(__alignof__(g_packedstruct.a) == 1); 25 26 typedef double arr3double[3]; 27 CHECK_ALIGNMENT(arr3double, g_arr3double, 4, 8); 28 29 enum big_enum { x = 18446744073709551615ULL }; 30 CHECK_ALIGNMENT(enum big_enum, g_bigenum, 4, 8); 31 32 // PR5637 33 34 #define ALIGNED(x) __attribute__((aligned(x))) 35 36 typedef ALIGNED(2) struct { 37 char a[3]; 38 } aligned_before_struct; 39 40 STATIC_ASSERT(sizeof(aligned_before_struct) == 3); 41 STATIC_ASSERT(sizeof(aligned_before_struct[1]) == 4); 42 STATIC_ASSERT(sizeof(aligned_before_struct[2]) == 6); 43 STATIC_ASSERT(sizeof(aligned_before_struct[2][1]) == 8); 44 STATIC_ASSERT(sizeof(aligned_before_struct[1][2]) == 6); 45 46 typedef struct ALIGNED(2) { 47 char a[3]; 48 } aligned_after_struct; 49 50 STATIC_ASSERT(sizeof(aligned_after_struct) == 4); 51 STATIC_ASSERT(sizeof(aligned_after_struct[1]) == 4); 52 STATIC_ASSERT(sizeof(aligned_after_struct[2]) == 8); 53 STATIC_ASSERT(sizeof(aligned_after_struct[2][1]) == 8); 54 STATIC_ASSERT(sizeof(aligned_after_struct[1][2]) == 8); 55