mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-27 11:43:34 +08:00
105 lines
2.9 KiB
C
105 lines
2.9 KiB
C
/* Copyright (C) 1991-2017 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include <assert.h>
|
|
#include <atomic.h>
|
|
#include <ldsodefs.h>
|
|
#include <libintl.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <sysdep.h>
|
|
#include <unistd.h>
|
|
#include <sys/mman.h>
|
|
|
|
|
|
extern const char *__progname;
|
|
|
|
#include <wchar.h>
|
|
#include <libio/iolibio.h>
|
|
#define fflush(s) _IO_fflush (s)
|
|
|
|
/* This function, when passed a string containing an asserted
|
|
expression, a filename, and a line number, prints a message
|
|
on the standard error stream of the form:
|
|
a.c:10: foobar: Assertion `a == b' failed.
|
|
It then aborts program execution via a call to `abort'. */
|
|
|
|
#ifdef FATAL_PREPARE_INCLUDE
|
|
# include FATAL_PREPARE_INCLUDE
|
|
#endif
|
|
|
|
|
|
void
|
|
__assert_fail_base (const char *fmt, const char *assertion, const char *file,
|
|
unsigned int line, const char *function)
|
|
{
|
|
char *str;
|
|
|
|
#ifdef FATAL_PREPARE
|
|
FATAL_PREPARE;
|
|
#endif
|
|
|
|
int total;
|
|
if (__asprintf (&str, fmt,
|
|
__progname, __progname[0] ? ": " : "",
|
|
file, line,
|
|
function ? function : "", function ? ": " : "",
|
|
assertion, &total) >= 0)
|
|
{
|
|
/* Print the message. */
|
|
(void) __fxprintf (NULL, "%s", str);
|
|
(void) fflush (stderr);
|
|
|
|
total = (total + 1 + GLRO(dl_pagesize) - 1) & ~(GLRO(dl_pagesize) - 1);
|
|
struct abort_msg_s *buf = __mmap (NULL, total, PROT_READ | PROT_WRITE,
|
|
MAP_ANON | MAP_PRIVATE, -1, 0);
|
|
if (__glibc_likely (buf != MAP_FAILED))
|
|
{
|
|
buf->size = total;
|
|
strcpy (buf->msg, str);
|
|
|
|
/* We have to free the old buffer since the application might
|
|
catch the SIGABRT signal. */
|
|
struct abort_msg_s *old = atomic_exchange_acq (&__abort_msg, buf);
|
|
|
|
if (old != NULL)
|
|
__munmap (old, old->size);
|
|
}
|
|
|
|
free (str);
|
|
}
|
|
else
|
|
{
|
|
/* At least print a minimal message. */
|
|
static const char errstr[] = "Unexpected error.\n";
|
|
__libc_write (STDERR_FILENO, errstr, sizeof (errstr) - 1);
|
|
}
|
|
|
|
abort ();
|
|
}
|
|
|
|
|
|
#undef __assert_fail
|
|
void
|
|
__assert_fail (const char *assertion, const char *file, unsigned int line,
|
|
const char *function)
|
|
{
|
|
__assert_fail_base (_("%s%s%s:%u: %s%sAssertion `%s' failed.\n%n"),
|
|
assertion, file, line, function);
|
|
}
|
|
hidden_def(__assert_fail)
|