| /* Copyright (C) 1991-2014 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/>. */ |
| |
| /* |
| * ISO C99 Standard: 7.2 Diagnostics <assert.h> |
| */ |
| |
| #ifdef _ASSERT_H |
| |
| # undef _ASSERT_H |
| # undef assert |
| # undef __ASSERT_VOID_CAST |
| |
| # ifdef __USE_GNU |
| # undef assert_perror |
| # endif |
| |
| #endif /* assert.h */ |
| |
| #define _ASSERT_H 1 |
| #include <features.h> |
| |
| #if defined __cplusplus && __GNUC_PREREQ (2,95) |
| # define __ASSERT_VOID_CAST static_cast<void> |
| #else |
| # define __ASSERT_VOID_CAST (void) |
| #endif |
| |
| /* 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) (__ASSERT_VOID_CAST (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) (__ASSERT_VOID_CAST (0)) |
| # endif |
| |
| #else /* Not NDEBUG. */ |
| |
| __BEGIN_DECLS |
| |
| /* This prints an "Assertion failed" message and aborts. */ |
| extern void __assert_fail (const char *__assertion, const char *__file, |
| unsigned int __line, const char *__function) |
| __THROW __attribute__ ((__noreturn__)); |
| |
| /* Likewise, but prints the error text for ERRNUM. */ |
| extern void __assert_perror_fail (int __errnum, const char *__file, |
| unsigned int __line, const char *__function) |
| __THROW __attribute__ ((__noreturn__)); |
| |
| |
| /* The following is not at all used here but needed for standard |
| compliance. */ |
| extern void __assert (const char *__assertion, const char *__file, int __line) |
| __THROW __attribute__ ((__noreturn__)); |
| |
| |
| __END_DECLS |
| |
| # define assert(expr) \ |
| ((expr) \ |
| ? __ASSERT_VOID_CAST (0) \ |
| : __assert_fail (__STRING(expr), __FILE__, __LINE__, __ASSERT_FUNCTION)) |
| |
| # ifdef __USE_GNU |
| # define assert_perror(errnum) \ |
| (!(errnum) \ |
| ? __ASSERT_VOID_CAST (0) \ |
| : __assert_perror_fail ((errnum), __FILE__, __LINE__, __ASSERT_FUNCTION)) |
| # 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. |
| C9x has a similar variable called __func__, but prefer the GCC one since |
| it demangles C++ function names. */ |
| # if defined __cplusplus ? __GNUC_PREREQ (2, 6) : __GNUC_PREREQ (2, 4) |
| # define __ASSERT_FUNCTION __PRETTY_FUNCTION__ |
| # else |
| # if defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L |
| # define __ASSERT_FUNCTION __func__ |
| # else |
| # define __ASSERT_FUNCTION ((const char *) 0) |
| # endif |
| # endif |
| |
| #endif /* NDEBUG. */ |
| |
| |
| #if defined __USE_ISOC11 && !defined __cplusplus |
| /* Static assertion. Requires support in the compiler. */ |
| # undef static_assert |
| # define static_assert _Static_assert |
| #endif |