[GHC] #10620: Primitive chars and strings aren't handled by Template Haskell's quasiquoter

8 Jul 2015

      #10620: Primitive chars and strings aren't handled by Template Haskell's
quasiquoter
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              Reporter:              |             Owner:  RyanGlScott
  RyanGlScott                        |            Status:  new
                  Type:  bug         |         Milestone:
              Priority:  normal      |           Version:  7.10.1
             Component:  Template    |  Operating System:  Unknown/Multiple
  Haskell                            |   Type of failure:  GHC rejects
              Keywords:              |  valid program
          Architecture:              |        Blocked By:
  Unknown/Multiple                   |   Related Tickets:
             Test Case:              |
              Blocking:              |
Differential Revisions:              |
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 Currently, Template Haskell can't quasiquote {{{Char#}}} or {{{Addr#}}}
 values:

 {{{
 $ ghci -XTemplateHaskell -XMagicHash
 GHCi, version 7.10.1: http://www.haskell.org/ghc/  :? for help
 λ> import Language.Haskell.TH
 λ> $([| 'a'# |])

 <interactive>:3:6:
     Exotic literal not (yet) handled by Template Haskell 'a'#
 λ> $([| "a"# |])

 <interactive>:4:6:
     Exotic literal not (yet) handled by Template Haskell "a"##
 }}}

 To fix this, we'd need to change the API of {{{template-haskell}}} a bit,
 since {{{Lit}}} has a {{{StringPrimL}}} but not a {{{CharPrimL}}}
 constructor.

--
Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10620
GHC http://www.haskell.org/ghc/
The Glasgow Haskell Compiler