mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-20 14:57:39 +07:00
531b014e7a
reallocarray() is a safer variant of realloc which checks for multiplication overflow in case of array allocation. Since it's not available in Glibc < 2.26 import kernel's overflow.h and add a static inline implementation when needed. Use feature detection to probe for existence of reallocarray. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com> Reviewed-by: Jiong Wang <jiong.wang@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
43 lines
1.2 KiB
C
43 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef _TOOLS_LINUX_COMPILER_H_
|
|
#error "Please don't include <linux/compiler-gcc.h> directly, include <linux/compiler.h> instead."
|
|
#endif
|
|
|
|
/*
|
|
* Common definitions for all gcc versions go here.
|
|
*/
|
|
#define GCC_VERSION (__GNUC__ * 10000 \
|
|
+ __GNUC_MINOR__ * 100 \
|
|
+ __GNUC_PATCHLEVEL__)
|
|
|
|
#if GCC_VERSION >= 70000 && !defined(__CHECKER__)
|
|
# define __fallthrough __attribute__ ((fallthrough))
|
|
#endif
|
|
|
|
#if GCC_VERSION >= 40300
|
|
# define __compiletime_error(message) __attribute__((error(message)))
|
|
#endif /* GCC_VERSION >= 40300 */
|
|
|
|
/* &a[0] degrades to a pointer: a different type from an array */
|
|
#define __must_be_array(a) BUILD_BUG_ON_ZERO(__same_type((a), &(a)[0]))
|
|
|
|
#ifndef __pure
|
|
#define __pure __attribute__((pure))
|
|
#endif
|
|
#define noinline __attribute__((noinline))
|
|
#ifndef __packed
|
|
#define __packed __attribute__((packed))
|
|
#endif
|
|
#ifndef __noreturn
|
|
#define __noreturn __attribute__((noreturn))
|
|
#endif
|
|
#ifndef __aligned
|
|
#define __aligned(x) __attribute__((aligned(x)))
|
|
#endif
|
|
#define __printf(a, b) __attribute__((format(printf, a, b)))
|
|
#define __scanf(a, b) __attribute__((format(scanf, a, b)))
|
|
|
|
#if GCC_VERSION >= 50100
|
|
#define COMPILER_HAS_GENERIC_BUILTIN_OVERFLOW 1
|
|
#endif
|