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99 lines
3 KiB
C
99 lines
3 KiB
C
/* Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved.
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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; version 2 of the License.
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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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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA */
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/*
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Helper macros used for setting different __attributes__
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on functions in a portable fashion
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*/
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#ifndef _my_attribute_h
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#define _my_attribute_h
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#if defined(__GNUC__)
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# ifndef GCC_VERSION
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# define GCC_VERSION (__GNUC__ * 1000 + __GNUC_MINOR__)
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# endif
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#endif
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/*
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Disable __attribute__() on gcc < 2.7, g++ < 3.4, and non-gcc compilers.
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Some forms of __attribute__ are actually supported in earlier versions of
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g++, but we just disable them all because we only use them to generate
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compilation warnings.
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*/
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#ifndef __attribute__
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# if !defined(__GNUC__) && !defined(__clang__)
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# define __attribute__(A)
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# elif defined(__GNUC__)
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# ifndef GCC_VERSION
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# define GCC_VERSION (__GNUC__ * 1000 + __GNUC_MINOR__)
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# endif
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# if GCC_VERSION < 2008
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# define __attribute__(A)
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# elif defined(__cplusplus) && GCC_VERSION < 3004
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# define __attribute__(A)
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# endif
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# endif
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#endif
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/*
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__attribute__((format(...))) is only supported in gcc >= 2.8 and g++ >= 3.4
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But that's already covered by the __attribute__ tests above, so this is
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just a convenience macro.
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*/
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#ifndef ATTRIBUTE_FORMAT
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# define ATTRIBUTE_FORMAT(style, m, n) __attribute__((format(style, m, n)))
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#endif
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/*
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__attribute__((format(...))) on a function pointer is not supported
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until gcc 3.1
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*/
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#ifndef ATTRIBUTE_FORMAT_FPTR
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# if (GCC_VERSION >= 3001)
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# define ATTRIBUTE_FORMAT_FPTR(style, m, n) ATTRIBUTE_FORMAT(style, m, n)
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# else
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# define ATTRIBUTE_FORMAT_FPTR(style, m, n)
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# endif /* GNUC >= 3.1 */
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#endif
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/* gcc 7.5.0 does not support __attribute__((no_sanitize("undefined")) */
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#ifndef ATTRIBUTE_NO_UBSAN
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# if (GCC_VERSION >= 8000) || defined(__clang__)
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# define ATTRIBUTE_NO_UBSAN __attribute__((no_sanitize("undefined")))
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# elif (GCC_VERSION >= 6001)
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# define ATTRIBUTE_NO_UBSAN __attribute__((no_sanitize_undefined))
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# else
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# define ATTRIBUTE_NO_UBSAN
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# endif
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#endif
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/* Define pragmas to disable warnings for stack frame checking */
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#if defined(__clang__)
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#define PRAGMA_DISABLE_CHECK_STACK_FRAME \
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_Pragma("clang diagnostic push") \
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_Pragma("clang diagnostic ignored \"-Wframe-larger-than=\"")
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#define PRAGMA_REENABLE_CHECK_STACK_FRAME \
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_Pragma("clang diagnostic pop")
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#else
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#define PRAGMA_DISABLE_CHECK_STACK_FRAME
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#define PRAGMA_REENABLE_CHECK_STACK_FRAME
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#endif
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#endif /* _my_attribute_h */
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