cosmopolitan/libc/log/checkfail_ndebug.c

52 lines
2.9 KiB
C

/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2020 Justine Alexandra Roberts Tunney │
│ │
│ This program is free software; you can redistribute it and/or modify │
│ it under the terms of the GNU General Public License as published by │
│ the Free Software Foundation; version 2 of the License. │
│ │
│ This program is distributed in the hope that it will be useful, but │
│ WITHOUT ANY WARRANTY; without even the implied warranty of │
│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
│ General Public License for more details. │
│ │
│ You should have received a copy of the GNU General Public License │
│ along with this program; if not, write to the Free Software │
│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
│ 02110-1301 USA │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/errno.h"
#include "libc/fmt/itoa.h"
#include "libc/log/internal.h"
#include "libc/log/log.h"
#include "libc/runtime/runtime.h"
/**
* Handles failure of CHECK_xx() macros in -DNDEBUG mode.
*
* This handler (1) makes binaries smaller by not embedding source code;
* and therefore (2) less likely to leak sensitive information. This can
* still print backtraces with function names if the .com.dbg file is in
* the same folder.
*
* @see libc/log/thunks/__check_fail_ndebug.S
*/
relegated void ___check_fail_ndebug(uint64_t want, uint64_t got,
const char *opchar) {
char bx[21];
int lasterr;
lasterr = errno;
__start_fatal_ndebug();
__print_string("check failed: 0x");
__print(bx, uint64toarray_radix16(want, bx));
__print_string(" ");
__print_string(opchar);
__print_string(" 0x");
__print(bx, uint64toarray_radix16(got, bx));
__print_string(" (");
__print(bx, int64toarray_radix10(lasterr, bx));
__print_string(")\r\n");
}