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67 lines
2.1 KiB
C
67 lines
2.1 KiB
C
/* Copyright (C) 2002 Manuel Novoa III
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* An __assert() function compatible with the modified glibc assert.h
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* that is used by uClibc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This 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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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the Free
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* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/* Oct 28, 2002
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*
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* ANSI/ISO C99 requires assert() to write to stderr. This means that
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* writing to STDERR_FILENO is insufficient, as the user could freopen
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* stderr. It is also insufficient to output to fileno(stderr) since
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* this would fail in the custom stream case. I didn't remove the
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* old code though, as it doesn't use stdio stream functionality
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* and is useful in debugging the stdio code.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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/* Get the prototype from assert.h as a double-check. */
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#undef NDEBUG
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#include <assert.h>
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#undef assert
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#define ASSERT_SHOW_PROGNAME 1
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static smallint in_assert; /* bss inits to 0. */
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void __assert(const char *assertion, const char * filename,
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unsigned int linenumber, register const char * function)
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{
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if (!in_assert) {
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in_assert = 1;
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fprintf(stderr,
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#ifdef ASSERT_SHOW_PROGNAME
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"%s: %s: %d: %s: Assertion `%s' failed.\n", __uclibc_progname,
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#else
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"%s: %d: %s: Assertion `%s' failed.\n",
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#endif
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filename,
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linenumber,
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/* Function name isn't available with some compilers. */
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((function == NULL) ? "?function?" : function),
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assertion
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);
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}
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/* shouldn't we? fflush(stderr); */
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abort();
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}
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libc_hidden_def(__assert)
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