调用pthread_join（）之后出现分段错误

#include<stdio.h>
#include<stdlib.h>
#include<pthread.h>

pthread_t pid1,pid2;

void *test(void *arg)
{
void **end;
printf(\"\\nNew Thread ID: 0x%x\\n\",(unsigned int)pid2);
pthread_join(pid1,end);
printf(\"\\nNew Thread going to go off\\n\");
printf(\"\\nNew Thread ID: 0x%x\\n\",(unsigned int)pid2);
return ((void *)NULL);
}    

int main()
{
pid1 = pthread_self();
pthread_create(&pid2,NULL,test,NULL);
printf(\"\\nMain Thread ID: 0x%x\\n\",(unsigned int)pid1);
sleep(2);
printf(\"\\nI am going off\\n\");
pthread_exit(0);
}