Program crash: GC destroys an object unexpectedly

[eugene]

On Tuesday, 14 September 2021 at 12:53:27 UTC, Adam D Ruppe wrote:
> I had a problem just like this before because I was sending 
> objects through the pipe. And while they were in the pipe -

```rust
     pub fn msg(&self, code: u32) {
         let ptr: *const u32 = &code;
         let n = unsafe { write(self.mxfd, ptr as *const void, 4) 
};
         if -1 == n {
             panic!("write({}): {:?}", self.mxfd, 
Error::last_os_error());
         }
     }
```

I failed to implement message queue as a wrapper over double list,
rust borrow checker has beaten me :)