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Fix Trac #3823, plus warning police in TcRnDriver
authorsimonpj@microsoft.com <unknown>
Wed, 20 Jan 2010 09:42:21 +0000 (09:42 +0000)
committersimonpj@microsoft.com <unknown>
Wed, 20 Jan 2010 09:42:21 +0000 (09:42 +0000)
The immediate reason for this patch is to fix #3823. This was
rather easy: all the work was being done but I was returning
type_env2 rather than type_env3.

An unused-veriable warning would have shown this up, so I fixed all
the other warnings in TcRnDriver.  Doing so showed up at least two
genuine lurking bugs.  Hurrah.


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Glasgow Haskell Compiler with heterogeneous metaprogramming (generalized arrows and modal types)