fread函数添加接收参数，以免编译警告

target.cc

@@ -34,7 +34,7 @@ int main(int argc, char *argv[]){
   size_t file_len = ftell(fp);
   uint8_t *tmp = (uint8_t*)malloc(sizeof(uint8_t) * file_len);
   fseek(fp, 0, SEEK_SET);
-  fread(tmp, file_len, sizeof(uint8_t), fp);
+  size_t bytes_read = fread(tmp, file_len, sizeof(uint8_t), fp);
   fclose(fp);
 
   test_func(tmp, file_len);