1/* Check if the @defs() construct preserves the correct
2   layout of bitfields.  */
3/* Contributed by Ziemowit Laski <zlaski@apple.com>.  */
4/* { dg-do run } */
5/* { dg-options "-Wpadded" } */
6
7#include "../objc-obj-c++-shared/TestsuiteObject.m"
8
9#include <stdlib.h>
10#include <string.h>
11
12#define CHECK_IF(expr) if(!(expr)) abort()
13
14enum Enum { one, two, three, four };
15
16@interface Base: TestsuiteObject {
17  unsigned a: 2;
18  int b: 3;
19  enum Enum c: 4;
20  unsigned d: 5;
21} /* { dg-warning "padding struct size to alignment boundary" } */
22@end
23
24@interface Derived: Base {
25  signed e: 5;
26  int f: 4;
27  enum Enum g: 3;
28} /* { dg-line interface_Derived } */
29@end
30
31/* Note that the semicolon after @defs(...) is optional.  */
32
33typedef struct { @defs(Base) } Base_t;  /* { dg-warning "padding struct size to alignment boundary" } */
34typedef struct { @defs(Derived); } Derived_t; /* { dg-line Derived_t_def } */
35
36int main(void)
37{
38  CHECK_IF(sizeof(Base_t) == sizeof(Base));
39  CHECK_IF(sizeof(Derived_t) == sizeof(Derived));
40
41#ifdef __NEXT_RUNTIME__
42  CHECK_IF(!strcmp(@encode(Base), "{Base=#b2b3b4b5}"));
43  CHECK_IF(!strcmp(@encode(Derived), "{Derived=#b2b3b4b5b5b4b3}"));
44
45  CHECK_IF(!strcmp(@encode(Base_t), "{?=#b2b3b4b5}"));
46  CHECK_IF(!strcmp(@encode(Derived_t), "{?=#b2b3b4b5b5b4b3}"));
47#endif /* __NEXT_RUNTIME__ */
48
49  return 0;
50}
51
52/* { dg-prune-output "In file included from" }  Ignore this message.  */
53/* { dg-bogus "padding struct to align" "PR23610" { target *-*-* } 0 } */
54
55/* { dg-bogus "padding struct size" "PR23610" { xfail lp64 } interface_Derived } */
56/* { dg-bogus "padding struct size" "PR23610" { xfail lp64 } Derived_t_def } */
57