#3163: GADTs should not allow polymorphism in return type
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Reporter: Scott Turner | Owner: simonpj
Type: bug | Status: closed
Priority: normal | Milestone: 6.12.1
Component: Compiler (Type checker) | Version: 6.10.1
Severity: normal | Resolution: fixed
Keywords: | Difficulty: Unknown
Testcase: gadt/T3163 | Os: Linux
Architecture: x86 |
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Changes (by simonpj):
* testcase: => gadt/T3163
* status: new => closed
* resolution: => fixed
Comment:
Done! The fix got mixed into a Template Haskell enhancement:
{{{
Wed May 27 19:12:42 BST 2009 [email protected]
* Template Haskell: allow type splices
M ./compiler/typecheck/TcMType.lhs -4 +8
}}}
Specifically there was a bug in `TcMType.check_arg_type`, which is great
to have found.
Simon
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3163#comment:5>
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