/*      $NetBSD: gcc_init_compound_literal.c,v 1.8 2023/07/29 07:49:15 rillig Exp $     */
# 3 "gcc_init_compound_literal.c"

/*
 * C99 says in 6.7.8p4:
 *
 *      All the expressions in an initializer for an object that has static
 *      storage duration shall be constant expressions or string literals.
 *
 * The term "constant expression" is defined in C99 6.6, where 6.6p9 allows
 * "constant expressions" in initializers to also be an "address constant".
 * Using these address constants, it is possible to reference an unnamed
 * object created by a compound literal (C99 6.5.2.5), using either an
 * explicit '&' or the implicit array-to-pointer conversion from C99 6.3.2.1.
 *
 * Before init.c 1.195 from 2021-04-17, an assertion in check_global_variable
 * failed since these temporary objects have neither storage class EXTERN nor
 * STATIC.
 */

/* lint1-extra-flags: -X 351 */

// Seen in sys/crypto/aes/aes_ccm.c.
const struct {
    const unsigned char *ctxt;
} T = {
        .ctxt = (const unsigned char[4]){
            1, 2, 3, 4
        },
};

struct node {
        int num;
        struct node *left;
        struct node *right;
};

/*
 * Initial tree for representing the decisions in the classic number guessing
 * game often used in teaching the basics of programming.
 */
/* expect+1: warning: static variable 'guess' unused [226] */
static const struct node guess = {
        50,
        &(struct node){
                25,
                &(struct node){
                        12,
                        (void *)0,
                        (void *)0,
                },
                &(struct node){
                        37,
                        (void *)0,
                        (void *)0,
                },
        },
        (void *)0
};