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Preserve message printed before abort.

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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
This commit is contained in:
Ulrich Drepper
2009-06-15 16:17:09 -07:00
parent 6355c99740
commit 48dcd0ba84
8 changed files with 67 additions and 11 deletions
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10
assert/assert-perr.c
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@@ -1,4 +1,4 @@
/* Copyright (C) 1994-1998,2001,2002,2005 Free Software Foundation, Inc.
/* Copyright (C) 1994-1998,2001,2002,2005,2009 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
@@ -17,6 +17,7 @@
02111-1307 USA. */
#include <assert.h>
#include <atomic.h>
#include <libintl.h>
#include <stdio.h>
#include <stdlib.h>
@@ -64,9 +65,10 @@ __assert_perror_fail (int errnum,
(void) __fxprintf (NULL, "%s", buf);
(void) fflush (stderr);
/* We have to free the buffer since the appplication might catch the
SIGABRT. */
free (buf);
/* We have to free the old buffer since the application might
catch the SIGABRT signal. */
char *old = atomic_exchange_acq (&__abort_msg, buf);
free (old);
}
else
{