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48dcd0ba84
The terminal output etc is not visible in a core file. The new libc-internal variable __abort_msg will point to a string with the message which has been printed before the abort in case abort is called from inside libc. BZ #10217
83 lines
2.4 KiB
C
83 lines
2.4 KiB
C
/* Copyright (C) 1994-1998,2001,2002,2005,2009 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <assert.h>
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#include <atomic.h>
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#include <libintl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sysdep.h>
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#include <unistd.h>
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extern const char *__progname;
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#ifdef USE_IN_LIBIO
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# include <wchar.h>
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# include <libio/iolibio.h>
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# define fflush(s) INTUSE(_IO_fflush) (s)
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#endif
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/* This function, when passed an error number, a filename, and a line
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number, prints a message on the standard error stream of the form:
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a.c:10: foobar: Unexpected error: Computer bought the farm
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It then aborts program execution via a call to `abort'. */
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#ifdef FATAL_PREPARE_INCLUDE
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# include FATAL_PREPARE_INCLUDE
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#endif
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void
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__assert_perror_fail (int errnum,
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const char *file, unsigned int line,
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const char *function)
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{
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char errbuf[1024];
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char *buf;
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#ifdef FATAL_PREPARE
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FATAL_PREPARE;
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#endif
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if (__asprintf (&buf, _("%s%s%s:%u: %s%sUnexpected error: %s.\n"),
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__progname, __progname[0] ? ": " : "",
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file, line,
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function ? function : "", function ? ": " : "",
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__strerror_r (errnum, errbuf, sizeof errbuf)) >= 0)
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{
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/* Print the message. */
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(void) __fxprintf (NULL, "%s", buf);
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(void) fflush (stderr);
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/* We have to free the old buffer since the application might
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catch the SIGABRT signal. */
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char *old = atomic_exchange_acq (&__abort_msg, buf);
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free (old);
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}
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else
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{
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/* At least print a minimal message. */
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static const char errstr[] = "Unexpected error.\n";
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__libc_write (STDERR_FILENO, errstr, sizeof (errstr) - 1);
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}
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abort ();
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}
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libc_hidden_def (__assert_perror_fail)
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