[GHC] #15601: Unexpected compile error on type level lists with a single element
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Tue Sep 4 00:42:10 UTC 2018
#15601: Unexpected compile error on type level lists with a single element
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Reporter: erikd | Owner: (none)
Type: bug | Status: closed
Priority: normal | Milestone: 8.6.1
Component: Compiler | Version: 8.4.3
Resolution: invalid | Keywords:
Operating System: Unknown/Multiple | Architecture:
Type of failure: Incorrect | Unknown/Multiple
error/warning at compile-time | Test Case:
Blocked By: | Blocking:
Related Tickets: | Differential Rev(s):
Wiki Page: |
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Comment (by erikd):
Ok, thanks.
The solution for single element lists is to use:
{{{
type TypeList5 = TypeList2 :++ '[ 'F]
}}}
where bot the list and the constructor are ticked *and* there is a space
between the open square bracket and the first ticked constructor.
--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15601#comment:2>
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