abort_handler_s

将实现定义的消息写入 stderr ，该消息必须包含 msg 所指向的字符串，并调用 abort() 。

指向此函数的指针可传递给 set_constraint_handler_s 以建立运行时约束违规处理程序。

与所有边界检查函数一样，只有当实现定义了 __STDC_LIB_EXT1__ 且用户在包含 <stdlib.h> 之前将 __STDC_WANT_LIB_EXT1__ 定义为整型常量 1 时，才保证 abort_handler_s 可用。

参数

返回值

无；此函数不会返回到其调用者

注释

如果从未调用 set_constraint_handler_s ，默认处理程序由实现定义：可能是 abort_handler_s 、 ignore_handler_s 或其他实现定义的处理程序。

示例

#define __STDC_WANT_LIB_EXT1__ 1
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
int main(void)
{
#ifdef __STDC_LIB_EXT1__
    char dst[2];
    set_constraint_handler_s(ignore_handler_s);
    int r = strcpy_s(dst, sizeof dst, "Too long!");
    printf("dst = \"%s\", r = %d\n", dst, r);
    set_constraint_handler_s(abort_handler_s);
    r = strcpy_s(dst, sizeof dst, "Too long!");
    printf("dst = \"%s\", r = %d\n", dst, r);
#endif
}

dst = "", r = 22
abort_handler_s was called in response to a runtime-constraint violation.
The runtime-constraint violation was caused by the following expression in strcpy_s:
(s1max <= (s2_len=strnlen_s(s2, s1max)) ) (in string_s.c:62)
Note to end users: This program was terminated as a result
of a bug present in the software. Please reach out to your
software's vendor to get more help.
Aborted

参考文献

参见