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/* { dg-options "-Warray-bounds" } */
/* { dg-do compile } */
struct A
{
int i;
char p[1];
};
struct B
{
struct A a;
int i;
};
struct C
{
int i;
struct A a;
};
union D
{
char p[1];
struct A a;
struct B b;
struct C c;
};
struct E
{
int i;
union D d;
};
struct F
{
union D d;
int i;
};
union G
{
int i;
union D d;
};
void
f0 ()
{
__builtin_offsetof (struct A, p[4]); /* OK */
__builtin_offsetof (struct B, a.p[4]); /* { dg-warning "greater than size" } */
__builtin_offsetof (struct C, a.p[4]); /* OK */
__builtin_offsetof (union D, p[4]); /* OK */
__builtin_offsetof (union D, a.p[4]); /* OK */
__builtin_offsetof (union D, b.a.p[4]); /* { dg-warning "greater than size" } */
__builtin_offsetof (union D, c.a.p[4]); /* OK */
__builtin_offsetof (struct E, d.p[4]); /* OK */
__builtin_offsetof (struct E, d.a.p[4]); /* OK */
__builtin_offsetof (struct E, d.b.a.p[4]); /* { dg-warning "greater than size" } */
__builtin_offsetof (struct E, d.c.a.p[4]); /* OK */
__builtin_offsetof (struct F, d.p[4]); /* { dg-warning "greater than size" } */
__builtin_offsetof (struct F, d.a.p[4]); /* { dg-warning "greater than size" } */
__builtin_offsetof (struct F, d.b.a.p[4]); /* { dg-warning "greater than size" } */
__builtin_offsetof (struct F, d.c.a.p[4]); /* { dg-warning "greater than size" } */
__builtin_offsetof (union G, d.p[4]); /* OK */
__builtin_offsetof (union G, d.a.p[4]); /* OK */
__builtin_offsetof (union G, d.b.a.p[4]); /* { dg-warning "greater than size" } */
__builtin_offsetof (union G, d.c.a.p[4]); /* OK */
}
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