C语言编译报错：incompatible pointer type [-Wincompatible-pointer-types]（传参类型不匹配）

Posted 2022-01-04 Dontla

代码：

  //arnold add 20211213
  size_t save_video_box_buffer_size = 1920*1080*3/2;
  char* save_video_box_buffer = (char*)malloc(save_video_box_buffer_size); //开辟一块内存用来存储即将做编码推流的buffer（这先不用队列，看看写视频的速度怎么样先，不行再用队列）

  pthread_t main_stream_thread;	//
  //pthread_create(&main_stream_thread, NULL, MainStream, NULL); 	//origin
  pthread_create(&main_stream_thread, NULL, MainStream, save_video_box_buffer);

警告：

ky_ai_camera_engine_origin.c:1519:45: warning: passing argument 3 of ‘pthread_create’ from incompatible pointer type [-Wincompatible-pointer-types]
   pthread_create(&main_stream_thread, NULL, MainStream, save_video_box_buffer);
                                             ^~~~~~~~~~
In file included from /home/yg/rv/sdk/rv1.8/rv1126_rv1109/buildroot/output/rockchip_rv1126_rv1109/build/ky_ai_camera_engine_origin/src/ky_ai_camera_engine_origin.c:7:
/home/yg/rv/sdk/rv1.8/rv1126_rv1109/buildroot/output/rockchip_rv1126_rv1109/host/arm-buildroot-linux-gnueabihf/sysroot/usr/include/pthread.h:236:15: note: expected ‘void * (*)(void *)’ but argument is of type ‘void * (*)(char *)’
       void *(*__start_routine) (void *),
       ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

原因是pthread_create()传参类型不一致！传的是void*，需要的是char*

可以统统都改成void*，包括malloc