libmisc/intercept.c


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30

/* libmisc/intercept.c - Interceptable ("weak") functions
 *
 * Copyright (C) 2024-2025  Luke T. Shumaker <lukeshu@lukeshu.com>
 * SPDX-License-Identifier: AGPL-3.0-or-later
 */

#include <stdarg.h> /* for va_list, va_start(), va_end() */
#include <stdio.h>  /* for vprintf(), putchar() */
#include <stdlib.h> /* for abort() */

#include <libmisc/_intercept.h>

[[gnu::weak]]
size_t __lm_printf(const char *format, ...) {
	va_list va;
	va_start(va, format);
	size_t ret = (size_t) vprintf(format, va);
	va_end(va);
	return ret;
}

[[gnu::weak]]
void __lm_putchar(unsigned char c) {
	(void) putchar(c);
}

[[gnu::weak]]
void __lm_abort(void) {
	abort();
}