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/* testing the correct usage of flexible array members in unions
and alone in structures. */
/* { dg-do run } */
/* { dg-options "-Wpedantic" } */
union with_fam_1 {
int a;
int b[]; /* { dg-warning "flexible array member in union is a GCC extension" } */
};
union with_fam_2 {
char a;
int b[]; /* { dg-warning "flexible array member in union is a GCC extension" } */
};
union with_fam_3 {
char a[]; /* { dg-warning "flexible array member in union is a GCC extension" } */
/* { dg-warning "in an otherwise empty" "" { target c++ } .-1 } */
int b[]; /* { dg-warning "flexible array member in union is a GCC extension" } */
};
struct only_fam {
int b[];
/* { dg-warning "in a struct with no named members" "" { target c } .-1 } */
/* { dg-warning "in an otherwise empty" "" { target c++ } .-2 } */
/* { dg-warning "forbids flexible array member" "" { target c++ } .-3 } */
};
struct only_fam_2 {
unsigned int : 2;
unsigned int : 3;
int b[];
/* { dg-warning "in a struct with no named members" "" { target c } .-1 } */
/* { dg-warning "in an otherwise empty" "" { target c++ } .-2 } */
/* { dg-warning "forbids flexible array member" "" { target c++ } .-3 } */
};
int main ()
{
if (sizeof (union with_fam_1) != sizeof (int))
__builtin_abort ();
if (sizeof (union with_fam_2) != __alignof__ (int))
__builtin_abort ();
if (sizeof (union with_fam_3) != 0)
__builtin_abort ();
if (sizeof (struct only_fam) != 0)
__builtin_abort ();
if (sizeof (struct only_fam_2) != __alignof__ (int))
__builtin_abort ();
return 0;
}
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