#3833: Panic on standlone deriving without GeneralizedNewtypeDeriving
---------------------------------+------------------------------------------
Reporter: Khudyakov | Owner: igloo
Type: bug | Status: new
Priority: normal | Milestone:
Component: Compiler | Version: 6.12.1
Keywords: | Difficulty:
Os: Unknown/Multiple | Testcase:
Architecture: Unknown/Multiple | Failure: Compile-time crash
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Changes (by simonpj):
* owner: => igloo
Comment:
It turns out that the patch
{{{
Mon Dec 7 13:08:50 GMT 2009 [email protected]
* Tidy up deriving error messages
}}}
on the HEAD fixes the problem.
Attached is a 6.12-specific version of the patch. I have not applied it
because it causes a dozen test to have slightly different error message
output.
Ian, could you
* Apply the patch to the branch
* Accept the error message wibbles (if in doubt ask me)
* Add a test to the HEAD regression suite
* Close this and #3834
Thanks
Simon
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3833#comment:1>
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