blob: 8c51d82403a28b76ce759d14948fddb90a9d2382 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
|
/* PR c/25682 */
/* { dg-do compile } */
/* { dg-options "-ansi" } */
/* Test whether we don't ICE on questionable constructs where offsetof
should have been used instead. */
struct S
{
char a[4];
int b;
};
char c[(char *) &((struct S *) 0)->b - (char *) 0]; /* { dg-warning "variably modified" } */
char d[(__SIZE_TYPE__) &((struct S *) 8)->b]; /* { dg-warning "variably modified" } */
char e[sizeof (c) == __builtin_offsetof (struct S, b) ? 1 : -1];
char f[sizeof (d) == __builtin_offsetof (struct S, b) + 8 ? 1 : -1];
extern void bar (char *, char *);
void
foo (void)
{
char g[(char *) &((struct S *) 0)->b - (char *) 0];
char h[(__SIZE_TYPE__) &((struct S *) 8)->b];
char i[sizeof (g) == __builtin_offsetof (struct S, b) ? 1 : -1];
char j[sizeof (h) == __builtin_offsetof (struct S, b) + 8 ? 1 : -1];
bar (g, h);
}
|
