msg_102.c revision 1.5 
1/*	$NetBSD: msg_102.c,v 1.5 2023/06/30 09:21:52 rillig Exp $	*/
2# 3 "msg_102.c"
3
4// Test for message: illegal use of member '%s' [102]
5
6// Anonymous members are defined in C11 6.7.2.1p2.
7
8struct unrelated {
9	union {
10		struct {
11			unsigned bit_0:1;
12			unsigned bit_1:1;
13		};
14		unsigned bits;
15	};
16};
17
18struct bit_fields_and_bits {
19	union {
20		struct {
21			unsigned bf_bit_0:1;
22			unsigned bf_bit_1:1;
23		};
24		unsigned bf_bits;
25	};
26};
27
28static struct unrelated *u1, *u2;
29static struct bit_fields_and_bits *b1, *b2;
30
31static inline _Bool
32eq(int x)
33{
34	/*
35	 * TODO: Once this is fixed, enable lint in
36	 * external/mit/xorg/lib/dri.old/Makefile again.
37	 */
38
39	if (x == 0)
40		/* expect+2: error: illegal use of member 'bits' [102] */
41		/* expect+1: error: illegal use of member 'bits' [102] */
42		return u1->bits == u2->bits;
43
44	/*
45	 * The struct does not have a member named 'bits'.  There's another
46	 * struct with a member of that name, and in traditional C, it was
47	 * possible but discouraged to access members of other structs via
48	 * their plain name.
49	 */
50	/* expect+2: error: illegal use of member 'bits' [102] */
51	/* expect+1: error: illegal use of member 'bits' [102] */
52	return b1->bits == b2->bits;
53}
54