1 /* Check if the @defs() construct preserves the correct
2 layout of bitfields. */
3 /* Contributed by Ziemowit Laski <zlaski@apple.com>. */
4 /* { dg-options "-lobjc -Wpadded" } */
8 #include <objc/Object.h>
10 extern void abort(void);
11 extern int strcmp(const char *str1, const char *str2);
12 #define CHECK_IF(expr) if(!(expr)) abort()
14 enum Enum { one, two, three, four };
16 @interface Base: Object {
21 } /* { dg-warning "padding struct size to alignment boundary" } */
24 @interface Derived: Base {
28 } /* { dg-warning "padding struct size to alignment boundary" } */
31 /* Note that the semicolon after @defs(...) is optional. */
33 typedef struct { @defs(Base) } Base_t; /* { dg-warning "padding struct size to alignment boundary" } */
34 typedef struct { @defs(Derived); } Derived_t; /* { dg-warning "padding struct size to alignment boundary" } */
38 CHECK_IF(sizeof(Base_t) == sizeof(Base));
39 CHECK_IF(sizeof(Derived_t) == sizeof(Derived));
41 #ifdef __NEXT_RUNTIME__
42 CHECK_IF(!strcmp(@encode(Base), "{Base=#b2b3b4b5}"));
43 CHECK_IF(!strcmp(@encode(Derived), "{Derived=#b2b3b4b5b5b4b3}"));
45 CHECK_IF(!strcmp(@encode(Base_t), "{?=#b2b3b4b5}"));
46 CHECK_IF(!strcmp(@encode(Derived_t), "{?=#b2b3b4b5b5b4b3}"));
47 #endif /* __NEXT_RUNTIME__ */