ICE/Segmentation fault with user types, use only and modules

[Martin Reinecke]

Hi Paul!

> By updating to today's trunk, I find both these regressions have gone; 
> or rather, I can no longer reproduce them on 32bit or 64bit machines.
> 
> Could you confirm this, please?

Sorry, I just recompiled and still see the segfault on x86_64, both with
my test package and with Martin Tee's testcase :(

Cheers,
  Martin

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