/* Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA */
/*
Helper macros used for setting different __attributes__
on functions in a portable fashion
*/
#ifndef _my_attribute_h
#define _my_attribute_h
#if defined(__GNUC__)
# ifndef GCC_VERSION
# define GCC_VERSION (__GNUC__ * 1000 + __GNUC_MINOR__)
# endif
#endif
/*
Disable __attribute__() on gcc < 2.7, g++ < 3.4, and non-gcc compilers.
Some forms of __attribute__ are actually supported in earlier versions of
g++, but we just disable them all because we only use them to generate
compilation warnings.
*/
#ifndef __attribute__
# if !defined(__GNUC__) && !defined(__clang__)
# define __attribute__(A)
# elif defined(__GNUC__)
# ifndef GCC_VERSION
# define GCC_VERSION (__GNUC__ * 1000 + __GNUC_MINOR__)
# endif
# if GCC_VERSION < 2008
# define __attribute__(A)
# elif defined(__cplusplus) && GCC_VERSION < 3004
# define __attribute__(A)
# endif
# endif
#endif
/*
__attribute__((format(...))) is only supported in gcc >= 2.8 and g++ >= 3.4
But that's already covered by the __attribute__ tests above, so this is
just a convenience macro.
*/
#ifndef ATTRIBUTE_FORMAT
# define ATTRIBUTE_FORMAT(style, m, n) __attribute__((format(style, m, n)))
#endif
/*
__attribute__((format(...))) on a function pointer is not supported
until gcc 3.1
*/
#ifndef ATTRIBUTE_FORMAT_FPTR
# if (GCC_VERSION >= 3001)
# define ATTRIBUTE_FORMAT_FPTR(style, m, n) ATTRIBUTE_FORMAT(style, m, n)
# else
# define ATTRIBUTE_FORMAT_FPTR(style, m, n)
# endif /* GNUC >= 3.1 */
#endif
/* gcc 7.5.0 does not support __attribute__((no_sanitize("undefined")) */
#ifndef ATTRIBUTE_NO_UBSAN
# if (GCC_VERSION >= 8000) || defined(__clang__)
# define ATTRIBUTE_NO_UBSAN __attribute__((no_sanitize("undefined")))
# elif (GCC_VERSION >= 6001)
# define ATTRIBUTE_NO_UBSAN __attribute__((no_sanitize_undefined))
# else
# define ATTRIBUTE_NO_UBSAN
# endif
#endif
/* Define pragmas to disable warnings for stack frame checking */
#ifdef __GNUC__
#define PRAGMA_DISABLE_CHECK_STACK_FRAME \
_Pragma("GCC diagnostic push") \
_Pragma("GCC diagnostic ignored \"-Wframe-larger-than=\"")
#define PRAGMA_REENABLE_CHECK_STACK_FRAME \
_Pragma("GCC diagnostic pop")
/*
The following check is for older gcc version that allocates
a lot of stack during startup that does not need to be checked
*/
#if !defined(__clang__) && __GNUC__ < 13
#define PRAGMA_DISABLE_CHECK_STACK_FRAME_EXTRA PRAGMA_DISABLE_CHECK_STACK_FRAME
#else
#define PRAGMA_DISABLE_CHECK_STACK_FRAME_EXTRA
#endif /* !defined(__clang__) && __GNUC__ < 13 */
#else /*! __GNUC__ */
#define PRAGMA_DISABLE_CHECK_STACK_FRAME
#define PRAGMA_REENABLE_CHECK_STACK_FRAME
#define PRAGMA_DISABLE_CHECK_STACK_FRAME
#define PRAGMA_DISABLE_CHECK_STACK_FRAME_EXTRA
#endif /* __GNUC__ */
#endif /* _my_attribute_h */
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