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68 lines
2 KiB
C
68 lines
2 KiB
C
/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2012, 2013.
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This file is part of the Sortix C Library.
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The Sortix C Library is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 3 of the License, or (at your
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option) any later version.
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The Sortix C Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
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assert.h
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Verify program assertion.
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*******************************************************************************/
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#ifndef INCLUDE_ASSERT_H
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#define INCLUDE_ASSERT_H
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#include <sys/cdefs.h>
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__BEGIN_DECLS
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/* Determine how the value should be cast to void. */
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#if defined __cplusplus
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#define __ASSERT_VOID_CAST(x) static_cast<void>(x)
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#else
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#define __ASSERT_VOID_CAST(x) (void) x
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#endif
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/* The C11 static_assert macro expands to the _Static_assert keyword. */
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#if defined(__STDC_VERSION__) && 201112L <= __STDC_VERSION__
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#define static_assert _Static_assert
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#endif
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/* The actual implementation of assert. */
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__attribute__((noreturn))
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void __assert(const char*, unsigned long, const char*, const char*);
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__END_DECLS
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#endif
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/* Rid ourselves of any previous declaration of assert. */
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#ifdef assert
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#undef assert
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#endif
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/* If not debugging, we'll declare a no-operation assert macro. */
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#if defined(NDEBUG)
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#define assert(ignore) (__ASSERT_VOID_CAST(0))
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#endif
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/* Otherwise, declare the normal assert macro. */
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#if !defined(NDEBUG)
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#define assert(invariant) \
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((invariant) \
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? __ASSERT_VOID_CAST(0) \
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: __assert(__FILE__, __LINE__, __PRETTY_FUNCTION__, #invariant))
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#endif
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