1 /* { dg-do run { target { pcc_bitfield_type_matters || default_packed } } } */
2
3 /* Check bitfields and non-bitfields are aligned & sized similarly.
4
5 Copyright (C) 2002 Free Software Foundation Inc
6 Contributed by Nathan Sidwell <nathan@codesourcery.com>
7 */
8
9 #include <limits.h>
10 #include <stdio.h>
11
12 static int fail;
13
14 #define CHECK1(N, T) do { \
15 typedef struct Field_##N { char c; T f; } Field_##N; \
16 typedef struct BitField_##N { char c; T f : sizeof (T) * CHAR_BIT; } BitField_##N; \
17 if (sizeof (Field_##N) != sizeof (BitField_##N)) { \
18 fail = 1; printf ("sizeof %s failed\n", #T); \
19 } \
20 if (__alignof__ (Field_##N) != __alignof__ (BitField_##N)) { \
21 fail = 1; printf ("__alignof__ %s failed\n", #T); \
22 } \
23 } while (0)
24
25 #define CHECK(N, T) do { \
26 CHECK1(N, T); \
27 CHECK1 (s##N, signed T); \
28 CHECK1 (u##N, unsigned T); \
29 } while (0)
30
main()31 int main ()
32 {
33
34 CHECK (c, char);
35 CHECK (s, short);
36 CHECK (i, int);
37 CHECK (l, long);
38 CHECK (ll, long long);
39
40 return fail;
41 }
42