[GHC] #11974: `default` declaration doesn't allow higher-kinded types
GHC
ghc-devs at haskell.org
Thu Aug 25 15:04:16 UTC 2016
#11974: `default` declaration doesn't allow higher-kinded types
-------------------------------------+-------------------------------------
Reporter: goldfire | Owner:
Type: bug | Status: merge
Priority: normal | Milestone: 8.0.2
Component: Compiler | Version: 8.1
Resolution: | Keywords:
Operating System: Unknown/Multiple | Architecture:
| Unknown/Multiple
Type of failure: None/Unknown | Test Case:
| typecheck/should_compile/T11974,
| typecheck/should_fail/T11974b
Blocked By: | Blocking:
Related Tickets: | Differential Rev(s): Phab:D2136
Wiki Page: |
-------------------------------------+-------------------------------------
Comment (by Ben Gamari <ben@…>):
In [changeset:"37bfc6c91f02f6696aee875fbcc8acd0f7a6317b/ghc" 37bfc6c/ghc]:
{{{
#!CommitTicketReference repository="ghc"
revision="37bfc6c91f02f6696aee875fbcc8acd0f7a6317b"
Fix #11974 by adding a more smarts to TcDefaults.
Test cases:
typecheck/should_compile/T11974
typecheck/should_fail/T11974b
(cherry picked from commit 9a34bf1985035858ece043bf38b47b6ff4b88efb)
}}}
--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11974#comment:9>
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