test case for -xc incompleteness

[Ian Lynagh]

On Mon, Jan 15, 2007 at 03:43:47PM +0000, Frederik Eaton wrote:
> 
> Here is a test case showing poor results with '+RTS -xc'.

Excellent, thanks!

> The program dies with error message:
> 
> <Wrappers.unsingleton,Main.CAF>sparse-test: Wrappers.hs:218:4-9: Assertion failed
> 
> Clearly, the 'stack trace' is incomplete, since Wrappers is not
> imported directly by the main module (so I think there should be a few
> intervening levels as well).

This sounds like it could be the same problem as
http://hackage.haskell.org/trac/ghc/ticket/948

I've added your instructions to the bug log so we can check that your
case is also fixed when the bug is looked at.


Thanks
Ian