[英]How to correct warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
[英]pthread_exit() throws warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] warning
我一直在學習pthread庫,並創建了一個簡單的代碼來將兩個數字相乘,但是我無法擺脫這個警告。 附言。 代碼工作正常。
#include <stdio.h>
#include <pthread.h>
struct numbers {
int num1,num2;
};
void *mult(void *param) {
struct numbers *data = param;
int res = data->num1 * data->num2;
pthread_exit((void *)res);
}
int main(){
pthread_t tid;
struct numbers n;
n.num1 = 2;
n.num2 = 3;
pthread_create(&tid, NULL,mult, (void*)&n);
int res;
pthread_join(tid, (void *)&res);
printf("%d\n",(int)res);
return 0;
}
這是警告:
1.c: In function ‘mult’:
1.c:12:17: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
12 | pthread_exit((void *)res);
任何見解將不勝感激。
改變
pthread_exit((void *)res);
至
pthread_exit((void *)&res);
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