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bd27ea43e9
This generates a warning on gcc versions before 7.0. Signed-off-by: David Lamparter <equinox@diac24.net>
92 lines
2.9 KiB
C
92 lines
2.9 KiB
C
/*
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* Copyright (c) 2015-2017 David Lamparter, for NetDEF, Inc.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef _FRR_COMPILER_H
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#define _FRR_COMPILER_H
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/* function attributes, use like
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* void prototype(void) __attribute__((_CONSTRUCTOR(100)));
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*/
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#if defined(__clang__)
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#if __clang_major__ > 3 || (__clang_major__ == 3 && __clang_minor__ >= 5)
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# define _RET_NONNULL , returns_nonnull
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#endif
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#if __has_attribute(fallthrough)
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# define _FALLTHROUGH __attribute__((fallthrough));
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#endif
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# define _CONSTRUCTOR(x) constructor(x)
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#elif defined(__GNUC__)
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#if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 9)
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# define _RET_NONNULL , returns_nonnull
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#endif
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#if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)
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# define _CONSTRUCTOR(x) constructor(x)
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# define _DESTRUCTOR(x) destructor(x)
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# define _ALLOC_SIZE(x) alloc_size(x)
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#endif
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#if __GNUC__ >= 7
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# define _FALLTHROUGH __attribute__((fallthrough));
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#endif
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#endif
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#ifdef __sun
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/* Solaris doesn't do constructor priorities due to linker restrictions */
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#undef _CONSTRUCTOR
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#undef _DESTRUCTOR
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#endif
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/* fallback versions */
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#ifndef _RET_NONNULL
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# define _RET_NONNULL
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#endif
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#ifndef _CONSTRUCTOR
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# define _CONSTRUCTOR(x) constructor
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#endif
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#ifndef _DESTRUCTOR
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# define _DESTRUCTOR(x) destructor
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#endif
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#ifndef _ALLOC_SIZE
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# define _ALLOC_SIZE(x)
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#endif
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#ifndef _FALLTHROUGH
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#define _FALLTHROUGH
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#endif
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/*
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* for warnings on macros, put in the macro content like this:
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* #define MACRO BLA CPP_WARN("MACRO has been deprecated")
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*/
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#define CPP_STR(X) #X
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#if defined(__ICC)
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#define CPP_NOTICE(text) _Pragma(CPP_STR(message __FILE__ ": " text))
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#define CPP_WARN(text) CPP_NOTICE(text)
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#elif (defined(__GNUC__) \
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&& (__GNUC__ >= 5 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8))) \
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|| (defined(__clang__) \
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&& (__clang_major__ >= 4 \
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|| (__clang_major__ == 3 && __clang_minor__ >= 5)))
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#define CPP_WARN(text) _Pragma(CPP_STR(GCC warning text))
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#define CPP_NOTICE(text) _Pragma(CPP_STR(message text))
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#else
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#define CPP_WARN(text)
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#define CPP_NOTICE(text)
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#endif
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#endif /* _FRR_COMPILER_H */
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