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47 lines
1.5 KiB
C
47 lines
1.5 KiB
C
/* function-attributes.h - Provides compiler abstractions for
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* function attributes
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*
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* Copyright (c) 2012 Justus Winter <4winter@informatik.uni-hamburg.de>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see https://www.gnu.org/licenses/ .
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*/
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#ifndef FUNCTION_ATTRIBUTES_H
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#define FUNCTION_ATTRIBUTES_H
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/* clang provides this macro to test for support for function
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* attributes. If it isn't defined, this provides a compatibility
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* macro for other compilers.
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*/
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#ifndef __has_attribute
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#define __has_attribute(x) 0
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#endif
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/* Provide a NORETURN_ATTRIBUTE macro similar to PRINTF_ATTRIBUTE from
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* talloc.
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*
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* This attribute is understood by gcc since version 2.5. clang
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* provides support for testing for function attributes.
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*/
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#ifndef NORETURN_ATTRIBUTE
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#if (__GNUC__ >= 3 || \
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(__GNUC__ == 2 && __GNUC_MINOR__ >= 5) || \
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__has_attribute (noreturn))
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#define NORETURN_ATTRIBUTE __attribute__ ((noreturn))
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#else
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#define NORETURN_ATTRIBUTE
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#endif
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#endif
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#endif
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