Re: Bug: GHC hangs rather than reporting an occurs check error

On Thu, Mar 20, 2008 at 2:38 AM, Bryan Donlan wrote:

Hi all,

I've found a case where GHC will hang (consuming more and more memory) when it should report an occurs check error. The test case is at http://fushizen.net/~bd/kaos-ghc.loop.tgz - the error in question is that the arguments in the StateT instance for HOLift are reversed like so:

Forgot to mention this, but I'm using GHC 6.8.2 on ubuntu hardy.