c11_atomic.c revision 1.3 
1/*	$NetBSD: c11_atomic.c,v 1.3 2023/01/21 13:48:40 rillig Exp $	*/
2# 3 "c11_atomic.c"
3
4/*
5 * The keyword '_Atomic' was added in C11.  This test ensures that in C11
6 * mode, '_Atomic' can be used as both type qualifier and type specifier.
7 *
8 * See also:
9 *	C11 6.7.3 Type qualifiers
10 *	C11 6.7.2.4 Atomic type specifiers
11 */
12
13/* lint1-extra-flags: -Ac11 */
14
15/* C11 6.7.3 "Type qualifiers" */
16typedef _Atomic int atomic_int;
17
18typedef _Atomic struct {
19	int field;
20} atomic_struct;
21
22/* C11 6.7.2.4 "Atomic type specifiers" */
23double *
24atomic_ptr_cmpexch(_Atomic(double *)*ptr_var, _Atomic(double *) new_value)
25{
26	double *old = *ptr_var;
27	*ptr_var = new_value;
28	return old;
29}
30