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https://github.com/AuxXxilium/kmod.git
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16a62c7ab3
Since we pass -std=gnu99 to the compiler __STDC_VERSION__ is defined to 199901. Even in this case we can use _Noreturn. Delegate the testing to the configure phase with a compile test. In future we want to stop using AC_PROG_CC_99 and start using the new AC_PROG_CC from autoconf 2.70, which tries to choose the most recent standard.
74 lines
2.3 KiB
C
74 lines
2.3 KiB
C
/*
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* kmod - interface to kernel module operations
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*
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* Copyright (C) 2011-2013 ProFUSION embedded systems
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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 Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <stddef.h>
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#if defined(HAVE_STATIC_ASSERT)
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#define assert_cc(expr) \
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_Static_assert((expr), #expr)
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#else
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#define assert_cc(expr) \
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do { (void) sizeof(char [1 - 2*!(expr)]); } while(0)
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#endif
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#define check_types_match(expr1, expr2) \
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((typeof(expr1) *)0 != (typeof(expr2) *)0)
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#define container_of(member_ptr, containing_type, member) \
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((containing_type *) \
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((char *)(member_ptr) - offsetof(containing_type, member)) \
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- check_types_match(*(member_ptr), ((containing_type *)0)->member))
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/* Two gcc extensions.
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* &a[0] degrades to a pointer: a different type from an array */
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#define _array_size_chk(arr) ({ \
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assert_cc(!__builtin_types_compatible_p(typeof(arr), typeof(&(arr)[0]))); \
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0; \
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})
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#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + _array_size_chk(arr))
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#define XSTRINGIFY(x) #x
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#define STRINGIFY(x) XSTRINGIFY(x)
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/* Temporaries for importing index handling */
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#define NOFAIL(x) (x)
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#define fatal(x...) do { } while (0)
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/* Attributes */
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#define _must_check_ __attribute__((warn_unused_result))
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#define _printf_format_(a,b) __attribute__((format (printf, a, b)))
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#define _unused_ __attribute__((unused))
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#define _always_inline_ __inline__ __attribute__((always_inline))
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#define _cleanup_(x) __attribute__((cleanup(x)))
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/* Define C11 noreturn without <stdnoreturn.h> and even on older gcc
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* compiler versions */
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#ifndef noreturn
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#if defined(HAVE_NORETURN)
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#define noreturn _Noreturn
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#else
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#define noreturn __attribute__((noreturn))
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#endif
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#endif
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#define UNIQ __COUNTER__
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