1 #pragma once 2 #include <common/stddef.h> 3 4 // 当函数的返回值未被使用时，编译器抛出警告信息 5 #define __must_check __attribute__((__warn_unused_result__)) 6 #define __force __attribute__((force)) 7 // 无返回值的属性 8 #define __noreturn __attribute__((__noreturn__)) 9 /* 10 * Optional: only supported since clang >= 14.0 11 * 12 * gcc: https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-error-function-attribute 13 */ 14 #if __has_attribute(__error__) 15 #define __compiletime_error(msg) __attribute__((__error__(msg))) 16 #else 17 #define __compiletime_error(msg) 18 #endif 19 20 typedef uint8_t __attribute__((__may_alias__)) __u8_alias_t; 21 typedef uint16_t __attribute__((__may_alias__)) __u16_alias_t; 22 typedef uint32_t __attribute__((__may_alias__)) __u32_alias_t; 23 typedef uint64_t __attribute__((__may_alias__)) __u64_alias_t;