tools/include/linux/compiler-gcc.h

Source file repositories/reference/linux-study-clean/tools/include/linux/compiler-gcc.h

File Facts

System
Linux kernel
Corpus path
tools/include/linux/compiler-gcc.h
Extension
.h
Size
1252 bytes
Lines
43
Domain
Support Tooling And Documentation
Bucket
tools
Inferred role
Support Tooling And Documentation: implementation source
Status
source implementation candidate

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

#ifndef _TOOLS_LINUX_COMPILER_H_
#error "Please do not include <linux/compiler-gcc.h> directly, include <linux/compiler.h> instead."
#endif

/*
 * Common definitions for all gcc versions go here.
 */
#ifndef GCC_VERSION
#define GCC_VERSION (__GNUC__ * 10000		\
		     + __GNUC_MINOR__ * 100	\
		     + __GNUC_PATCHLEVEL__)
#endif

#if __has_attribute(__fallthrough__)
# define fallthrough                    __attribute__((__fallthrough__))
#else
# define fallthrough                    do {} while (0)  /* fallthrough */
#endif

#if __has_attribute(__error__)
# define __compiletime_error(message) __attribute__((error(message)))
#endif

/* &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)))

Annotation

Implementation Notes