/* Check if the @defs() construct preserves the correct
layout of bitfields. */
/* Contributed by Ziemowit Laski <zlaski@apple.com>. */
/* { dg-options "-Wpadded" } */
/* { dg-do run } */

#include "../objc-obj-c++-shared/TestsuiteObject.m"

extern void abort(void);
extern int strcmp(const char *str1, const char *str2);
#define CHECK_IF(expr) if(!(expr)) abort()

enum Enum { one, two, three, four };

@interface Base: TestsuiteObject {
unsigned a: 2;
int b: 3;
enum Enum c: 4;
unsigned d: 5;
} /* { dg-warning "padding struct size to alignment boundary" } */
@end

@interface Derived: Base {
signed e: 5;
int f: 4;
enum Enum g: 3;
} /* { dg-warning "padding struct size to alignment boundary" } */
@end

/* Note that the semicolon after @defs(...) is optional. */

typedef struct { @defs(Base) } Base_t; /* { dg-warning "padding struct size to alignment boundary" } */
typedef struct { @defs(Derived); } Derived_t; /* { dg-warning "padding struct size to alignment boundary" } */

int main(void)
{
CHECK_IF(sizeof(Base_t) == sizeof(Base));
CHECK_IF(sizeof(Derived_t) == sizeof(Derived));

#ifdef __NEXT_RUNTIME__
CHECK_IF(!strcmp(@encode(Base), "{Base=#b2b3b4b5}"));
CHECK_IF(!strcmp(@encode(Derived), "{Derived=#b2b3b4b5b5b4b3}"));

CHECK_IF(!strcmp(@encode(Base_t), "{?=#b2b3b4b5}"));
CHECK_IF(!strcmp(@encode(Derived_t), "{?=#b2b3b4b5b5b4b3}"));
#endif /* __NEXT_RUNTIME__ */

return 0;
}