在测试程序执行期间,我总是得到一个分段错误。我无法弄清楚为什么。也许有人可以给我解释一下,我确定我把指针混在一起。指向结构和函数指针的指针 - > Seg Fault
#include <stdio.h>
struct xy {
int (*read)();
void (*write)(int);
};
struct z {
struct xy *st_xy;
};
static void write_val(int val)
{
printf("write %d\n", val);
}
static int read_val()
{
/* return something just for testing */
return 100;
}
int init(struct xy *cfg)
{
cfg->read = read_val;
cfg->write = write_val;
return 0;
}
int reset(struct z *st_z)
{
/* write something just for testing */
st_z->st_xy->write(111);
return 55;
}
int main(int argc, char **argv)
{
static struct z test;
int ret;
int ret2;
ret = init(test.st_xy);
printf("init returned with %d\n", ret);
ret2 = reset(&test);
printf("reset returned with %d\n", ret2);
return 0;
}
你还没有初始化test.st_xy – markh44
'RET =的init(test.st_xy);'st_xy是一个指向一个结构,但它从来没有初始化 – stijn
@戴维·赫弗南对不起,我忘了,接受了答案,现在我做到了。 thx的信息链接 – arge