Viewing file:  anon-struct-11.c (1.98 KB) -rw-r--r--
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/* { dg-do compile } */
/* No special options--in particular, turn off the default
-pedantic-errors option. */
/* { dg-options "" } */
/* When not using -fplan9-extensions, we don't support automatic
conversion of pointer types, and we don't support referring to a
typedef name directly. */
extern void exit (int);
extern void abort (void);
struct A { char a; };
struct B {
char b;
struct A; /* { dg-warning "does not declare anything" } */
char c;
};
void
f1 (struct A *p) /* { dg-message "expected" } */
{
p->a = 1;
}
void
test1 (void)
{
struct B b;
struct A *p;
b.b = 2;
b.c = 3;
f1 (&b); /* { dg-warning "incompatible pointer type" } */
if (b.a != 1) /* { dg-error "no member" } */
abort ();
if (b.b != 2 || b.c != 3)
abort ();
p = &b; /* { dg-warning "incompatible pointer type" } */
if (p->a != 1)
abort ();
}
typedef struct { char d; } D;
struct E {
char b;
struct F { char f; }; /* { dg-warning "does not declare anything" } */
char c;
union {
D; /* { dg-warning "does not declare anything" } */
};
char e;
};
void
f2 (struct F *p) /* { dg-message "expected" } */
{
p->f = 6;
}
void
f3 (D *p) /* { dg-message "expected" } */
{
p->d = 4;
}
void
f4 (D d)
{
}
void
test2 (void)
{
struct E e;
struct F *pf;
D *pd;
D d;
e.b = 2;
e.c = 3;
e.e = 5;
f2 (&e); /* { dg-warning "incompatible pointer type" } */
f3 (&e); /* { dg-warning "incompatible pointer type" } */
if (e.d != 4) /* { dg-error "no member" } */
abort ();
if (e.f != 6) /* { dg-error "no member" } */
abort ();
if (e.b != 2 || e.c != 3 || e.e != 5)
abort ();
pf = &e; /* { dg-warning "incompatible pointer type" } */
if (pf->f != 6)
abort ();
pd = &e; /* { dg-warning "incompatible pointer type" } */
if (pd->d != 4)
abort ();
d = e.D; /* { dg-error "no member" } */
f3 (&e.D); /* { dg-error "no member" } */
f4 (e.D); /* { dg-error "no member" } */
}
int
main ()
{
test1 ();
test2 ();
exit (0);
}
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