/* $NetBSD: gcc_builtin_alloca.c,v 1.6 2025/04/12 15:49:49 rillig Exp $ */

/* $NetBSD: gcc_builtin_alloca.c,v 1.6 2025/04/12 15:49:49 rillig Exp $ */
# 3 "gcc_builtin_alloca.c"

/*
* Test for the GCC builtin functions __builtin_alloca*, which unlike most
* other builtin functions return a pointer instead of int.
*
* https://gcc.gnu.org/onlinedocs/gcc/Other-Builtins.html
*/

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

void
example(void)
{
char *ptr = __builtin_alloca(8);
ptr[4] = '4';

char *aligned_ptr = __builtin_alloca_with_align(8, 64);
aligned_ptr[0] = '\0';

/* expect+1: warning: invalid combination of pointer 'pointer to char' and integer 'int' for 'init' [183] */
char *unknown = __builtin_allocate(8);
unknown[0] = '\0';
}