Douglas Gregor | 453dbcb | 2012-01-26 07:55:45 +0000 | [diff] [blame] | 1 | // RUN: %clang_cc1 -fdump-record-layouts-simple %s 2> %t.layouts |
| 2 | // RUN: %clang_cc1 -fdump-record-layouts-simple %s > %t.before 2>&1 |
| 3 | // RUN: %clang_cc1 -DPACKED= -DALIGNED16= -fdump-record-layouts-simple -foverride-record-layout=%t.layouts %s > %t.after 2>&1 |
| 4 | // RUN: diff %t.before %t.after |
| 5 | // RUN: FileCheck %s < %t.after |
| 6 | |
| 7 | // If not explicitly disabled, set PACKED to the packed attribute. |
| 8 | #ifndef PACKED |
| 9 | # define PACKED __attribute__((packed)) |
| 10 | #endif |
| 11 | |
| 12 | struct Empty1 { }; |
| 13 | struct Empty2 { }; |
| 14 | |
| 15 | // CHECK: Type: struct X0 |
| 16 | struct X0 : public Empty1 { |
| 17 | int x[6] PACKED; |
| 18 | }; |
| 19 | |
| 20 | // CHECK: Type: struct X1 |
| 21 | struct X1 : public X0, public Empty2 { |
| 22 | char x[13]; |
| 23 | struct X0 y; |
| 24 | } PACKED; |
| 25 | |
| 26 | // CHECK: Type: struct X2 |
| 27 | struct PACKED X2 : public X1, public X0, public Empty1 { |
| 28 | short x; |
| 29 | int y; |
| 30 | }; |
| 31 | |
| 32 | // CHECK: Type: struct X3 |
| 33 | struct PACKED X3 : virtual public X1, public X0 { |
| 34 | short x; |
| 35 | int y; |
| 36 | }; |
| 37 | |
Douglas Gregor | 285c607 | 2012-02-03 19:31:51 +0000 | [diff] [blame] | 38 | // CHECK: Type: struct X4 |
| 39 | struct PACKED X4 { |
| 40 | unsigned int a : 1; |
| 41 | unsigned int b : 1; |
| 42 | unsigned int c : 1; |
| 43 | unsigned int d : 1; |
| 44 | unsigned int e : 1; |
| 45 | unsigned int f : 1; |
| 46 | unsigned int g : 1; |
| 47 | unsigned int h : 1; |
| 48 | unsigned int i : 1; |
| 49 | unsigned int j : 1; |
| 50 | unsigned int k : 1; |
| 51 | unsigned int l : 1; |
| 52 | unsigned int m : 1; |
| 53 | unsigned int n : 1; |
| 54 | X4(); |
| 55 | }; |
| 56 | |
Douglas Gregor | 453dbcb | 2012-01-26 07:55:45 +0000 | [diff] [blame] | 57 | void use_structs() { |
Douglas Gregor | 285c607 | 2012-02-03 19:31:51 +0000 | [diff] [blame] | 58 | X0 x0s[sizeof(X0)]; |
| 59 | X1 x1s[sizeof(X1)]; |
| 60 | X2 x2s[sizeof(X2)]; |
| 61 | X3 x3s[sizeof(X3)]; |
| 62 | X4 x4s[sizeof(X4)]; |
| 63 | x4s[1].a = 1; |
Douglas Gregor | 453dbcb | 2012-01-26 07:55:45 +0000 | [diff] [blame] | 64 | } |