Nested clean-up-requiring blocks in loop (sometimes) segfault [rustc]

[marijnh]

This one does:

fn main() {
  auto i = 0;
   while (i < 20) {
     {
       auto pt2 = @i;
       auto pt = @i;
       i = *pt + 1;
    }
  }
}

[marijnh]

Here's a simpler case, no segfault, but corrupted memory

EDIT: bogus snippet that didn't reproduce the issue removed

[graydon]

That case makes sense, due to +=. But this one also crashes:

fn main() {
   if (true) {
     {
       auto pt2 = @10;
       log "hi";
    }
  }
}

I'll look closer once I'm in the office. Probably something that will jump out given a .dot CFG.

[brson]

I can't reproduce the crash with either snippet. Does anyone think this problem still exists?

[marijnh]

The compiler has changed a lot in the meantime. I guess this was fixed at some point.