相关疑难解决方法(0)

我正在学习Pthreads.我的代码按照我想要的方式执行,我可以使用它.但它给了我一个关于编译的警告.

我编译使用:

gcc test.c -o test -pthread

与GCC 4.8.1.我得到了警告

test.c: In function ‘main’:
test.c:39:46: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
     pthread_create(&(tid[i]), &attr, runner, (void *) i);
                                              ^
test.c: In function ‘runner’:
test.c:54:22: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
   int threadnumber = (int) param;
                      ^

此错误来自以下代码:

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

#define MAX_THREADS 10

int sum; /* this data is shared by the thread(s) */
void *runner(void * param);

int main(int argc, …