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author | Roland McGrath <roland@gnu.org> | 1995-02-18 01:27:10 +0000 |
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committer | Roland McGrath <roland@gnu.org> | 1995-02-18 01:27:10 +0000 |
commit | 28f540f45bbacd939bfd07f213bcad2bf730b1bf (patch) | |
tree | 15f07c4c43d635959c6afee96bde71fb1b3614ee /assert/assert.h | |
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initial import
Diffstat (limited to 'assert/assert.h')
-rw-r--r-- | assert/assert.h | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/assert/assert.h b/assert/assert.h new file mode 100644 index 0000000000..7f7fc7f733 --- /dev/null +++ b/assert/assert.h @@ -0,0 +1,98 @@ +/* Copyright (C) 1991, 1992, 1994, 1995 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 Library General Public License as +published by the Free Software Foundation; either version 2 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 +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the, 1992 Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +/* + * ANSI Standard: 4.2 DIAGNOSTICS <assert.h> + */ + +#ifdef _ASSERT_H + +#undef _ASSERT_H +#undef assert + +#endif /* assert.h */ + +#define _ASSERT_H 1 +#include <features.h> + +/* void assert (int expression); + + If NDEBUG is defined, do nothing. + If not, and EXPRESSION is zero, print an error message and abort. */ + +#ifdef NDEBUG + +#define assert(expr) ((void) 0) + +/* void assert_perror (int errnum); + + If NDEBUG is defined, do nothing. If not, and ERRNUM is not zero, print an + error message with the error text for ERRNUM and abort. + (This is a GNU extension.) */ + +#ifdef __USE_GNU +#define assert_perror(errnum) ((void) 0) +#endif + +#else /* Not NDEBUG. */ + +#include <sys/cdefs.h> + +__BEGIN_DECLS + +/* This prints an "Assertion failed" message and aborts. */ +extern void __assert_fail __P ((__const char *__assertion, + __const char *__file, + unsigned int __line, + __const char *__function)) + __attribute__ ((__noreturn__)); + +/* Likewise, but prints the error text for ERRNUM. */ +extern void __assert_perror_fail __P ((int __errnum, + __const char *__file, + unsigned int __line, + __const char *__function)) + __attribute__ ((__noreturn__)); + +__END_DECLS + +#define assert(expr) \ + ((void) ((expr) || \ + (__assert_fail (__STRING(expr), \ + __FILE__, __LINE__, __ASSERT_FUNCTION), 0))) + +#ifdef __USE_GNU +#define assert_perror(errnum) \ + ((void) ((errnum) && (__assert_perror_fail ((errnum), \ + __FILE__, __LINE__, \ + __ASSERT_FUNCTION), 0))) +#endif + +/* Version 2.4 and later of GCC define a magical variable `__PRETTY_FUNCTION__' + which contains the name of the function currently being defined. + This is broken in G++ before version 2.6. */ +#if (!defined (__GNUC__) || __GNUC__ < 2 || \ + __GNUC_MINOR__ < (defined (__cplusplus) ? 6 : 4)) +#define __ASSERT_FUNCTION ((__const char *) 0) +#else +#define __ASSERT_FUNCTION __PRETTY_FUNCTION__ +#endif + + +#endif /* NDEBUG. */ + |