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my_attribute.h
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/* 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 */
