| 1 | // RUN: %clang_cc1 -w -fdump-record-layouts-simple %s > %t.layouts |
| 2 | // RUN: %clang_cc1 -w -DPACKED= -DALIGNED16= -fdump-record-layouts-simple -foverride-record-layout=%t.layouts %s > %t.after |
| 3 | // RUN: diff %t.layouts %t.after |
| 4 | // RUN: FileCheck %s < %t.after |
| 5 | |
| 6 | // If not explicitly disabled, set PACKED to the packed attribute. |
| 7 | #ifndef PACKED |
| 8 | # define PACKED __attribute__((packed)) |
| 9 | #endif |
| 10 | |
| 11 | // If not explicitly disabled, set ALIGNED16 to 16-byte alignment. |
| 12 | #ifndef ALIGNED16 |
| 13 | # define ALIGNED16 __attribute__((aligned(16))) |
| 14 | #endif |
| 15 | |
| 16 | // CHECK: Type: struct X0 |
| 17 | struct X0 { |
| 18 | int x[6] PACKED; |
| 19 | }; |
| 20 | |
| 21 | void use_X0() { struct X0 x0; x0.x[5] = sizeof(struct X0); }; |
| 22 | |
| 23 | // CHECK: Type: struct X1 |
| 24 | struct X1 { |
| 25 | char x[13]; |
| 26 | struct X0 y; |
| 27 | } PACKED; |
| 28 | |
| 29 | void use_X1() { struct X1 x1; x1.x[5] = sizeof(struct X1); }; |
| 30 | |
| 31 | // CHECK: Type: struct X2 |
| 32 | struct PACKED X2 { |
| 33 | short x; |
| 34 | int y; |
| 35 | }; |
| 36 | |
| 37 | void use_X2() { struct X2 x2; x2.y = sizeof(struct X2); }; |
| 38 | |
| 39 | // CHECK: Type: struct X3 |
| 40 | struct X3 { |
| 41 | short x PACKED; |
| 42 | int y; |
| 43 | }; |
| 44 | |
| 45 | void use_X3() { struct X3 x3; x3.y = sizeof(struct X3); }; |
| 46 | |
| 47 | #pragma pack(push,2) |
| 48 | // CHECK: Type: struct X4 |
| 49 | struct X4 { |
| 50 | int x; |
| 51 | int y; |
| 52 | }; |
| 53 | #pragma pack(pop) |
| 54 | |
| 55 | void use_X4() { struct X4 x4; x4.y = sizeof(struct X4); }; |
| 56 | |
| 57 | // CHECK: Type: struct X5 |
| 58 | struct PACKED X5 { double a[19]; signed char b; }; |
| 59 | |
| 60 | void use_X5() { struct X5 x5; x5.b = sizeof(struct X5); }; |
| 61 | |
| 62 | // CHECK: Type: struct X6 |
| 63 | struct PACKED X6 { long double a; char b; }; |
| 64 | |
| 65 | void use_X6() { struct X6 x6; x6.b = sizeof(struct X6); }; |
| 66 | |
| 67 | // CHECK: Type: struct X7 |
| 68 | struct X7 { |
| 69 | unsigned x; |
| 70 | unsigned char y; |
| 71 | } PACKED; |
| 72 | |
| 73 | void use_X7() { struct X7 x7; x7.y = x7.x = sizeof(struct X7); } |
| 74 | |
| 75 | // CHECK: Type: union X8 |
| 76 | union X8 { |
| 77 | struct X7 x; |
| 78 | unsigned y; |
| 79 | } PACKED; |
| 80 | |
| 81 | // CHECK: Type: struct X9 |
| 82 | struct X9 { |
| 83 | unsigned int x[2] PACKED; |
| 84 | unsigned int y; |
| 85 | unsigned int z PACKED; |
| 86 | }; |
| 87 | |
| 88 | // CHECK: Type: struct X10 |
| 89 | struct X10 { |
| 90 | unsigned int x[2] PACKED; |
| 91 | unsigned int y PACKED; |
| 92 | unsigned int z PACKED; |
| 93 | }; |
| 94 | |
| 95 | // CHECK: Type: struct X11 |
| 96 | struct PACKED X11 { |
| 97 | unsigned int x[2]; |
| 98 | unsigned int y; |
| 99 | unsigned int z; |
| 100 | }; |
| 101 | |
| 102 | // CHECK: Type: struct X12 |
| 103 | struct PACKED X12 { |
| 104 | int x : 24; |
| 105 | }; |
| 106 | |
| 107 | // CHECK: Type: struct X13 |
| 108 | struct PACKED X13 { |
| 109 | signed x : 10; |
| 110 | signed y : 10; |
| 111 | }; |
| 112 | |
| 113 | // CHECK: Type: union X14 |
| 114 | union PACKED X14 { |
| 115 | unsigned long long x : 3; |
| 116 | }; |
| 117 | |
| 118 | // CHECK: Type: struct X15 |
| 119 | struct X15 { |
| 120 | unsigned x : 16; |
| 121 | unsigned y : 28 PACKED; |
| 122 | }; |
| 123 | |
| 124 | // CHECK: Type: struct X16 |
| 125 | struct ALIGNED16 X16 { |
| 126 | int a, b, c; |
| 127 | int x : 5; |
| 128 | int y : 29; |
| 129 | }; |
| 130 | |
| 131 | void use_structs() { |
| 132 | union X8 x8; |
| 133 | typedef int X8array[sizeof(union X8)]; |
| 134 | x8.y = sizeof(union X8); |
| 135 | x8.x.x = x8.y; |
| 136 | |
| 137 | struct X9 x9; |
| 138 | typedef int X9array[sizeof(struct X9)]; |
| 139 | x9.y = sizeof(struct X9); |
| 140 | |
| 141 | struct X10 x10; |
| 142 | typedef int X10array[sizeof(struct X10)]; |
| 143 | x10.y = sizeof(struct X10); |
| 144 | |
| 145 | struct X11 x11; |
| 146 | typedef int X11array[sizeof(struct X11)]; |
| 147 | x11.y = sizeof(struct X11); |
| 148 | |
| 149 | struct X12 x12; |
| 150 | x12.x = sizeof(struct X12); |
| 151 | |
| 152 | struct X13 x13; |
| 153 | x13.x = sizeof(struct X13); |
| 154 | |
| 155 | union X14 x14; |
| 156 | x14.x = sizeof(union X14); |
| 157 | |
| 158 | struct X15 x15; |
| 159 | x15.x = sizeof(struct X15); |
| 160 | |
| 161 | struct X16 x16; |
| 162 | x16.x = sizeof(struct X16); |
| 163 | } |
| 164 | |