1 /* Test diagnostics for bad or doubtful casts. Test with
2 -pedantic. */
3 /* Origin: Joseph Myers <joseph@codesourcery.com> */
4 /* { dg-do compile } */
5 /* { dg-options "-std=gnu99 -pedantic" } */
6
7 struct s { int a; } sv;
8 union u { int a; } uv;
9 int i;
10 long l;
11 char c;
12 void *p;
13 float fv;
14
15 void
f(void)16 f (void)
17 {
18 (int []) p; /* { dg-error "cast specifies array type" } */
19 (int ()) p; /* { dg-error "cast specifies function type" } */
20 (struct s) sv; /* { dg-warning "ISO C forbids casting nonscalar to the same type" } */
21 (union u) uv; /* { dg-warning "ISO C forbids casting nonscalar to the same type" } */
22 (struct s) i; /* { dg-error "conversion to non-scalar type requested" } */
23 (union u) i; /* { dg-warning "ISO C forbids casts to union type" } */
24 (union u) l; /* { dg-error "cast to union type from type not present in union" } */
25 (int) sv; /* { dg-error "aggregate value used where an integer was expected" } */
26 (int) uv; /* { dg-error "aggregate value used where an integer was expected" } */
27 (float) sv; /* { dg-error "aggregate value used where a float was expected" } */
28 (float) uv; /* { dg-error "aggregate value used where a float was expected" } */
29 (_Complex double) sv; /* { dg-error "aggregate value used where a complex was expected" } */
30 (_Complex double) uv; /* { dg-error "aggregate value used where a complex was expected" } */
31 (void *) sv; /* { dg-error "cannot convert to a pointer type" } */
32 (void *) uv; /* { dg-error "cannot convert to a pointer type" } */
33 (_Bool) sv; /* { dg-error "used struct type value where scalar is required" } */
34 (_Bool) uv; /* { dg-error "used union type value where scalar is required" } */
35 (void) sv;
36 (const void) uv;
37 (void *) c; /* { dg-warning "cast to pointer from integer of different size" } */
38 (void *) (char) 1;
39 (char) p; /* { dg-warning "cast from pointer to integer of different size" } */
40 (char) (void *) 1; /* { dg-warning "cast from pointer to integer of different size" } */
41 }
42