c - while ... readdir 导致段错误

Question

在 main 中，我使用 deletefolder() 调用以下函数:

void deletefolder(){

   struct dirent *next_file;
   DIR *folder;

   char filepath[256];

   folder = opendir("./game/wow");

   while((next_file = readdir(folder)) != NULL){ //this is causing the segmentation fault. I don't know why?


      sprintf(filepath, "%s/%s", "./game/wow", next_file->d_name);
      remove(filepath);
   }
}

我不明白为什么会发生这种情况？

Answer 1

while((next_file = readdir(folder)) != NULL){ //this is causing the segmentation fault. i dont know why??

我怀疑打开目录时出错。添加一些错误检查代码。

folder = opendir("./game/wow");
if ( folder == NULL )
{
   perror("Unable to open folder.");
   return;
}

while((next_file = readdir(folder)) != NULL){ ...