[GHC] #14779: Compiling with -g fails -lint-core checks

GHC ghc-devs at haskell.org
Thu Feb 8 14:39:52 UTC 2018


#14779: Compiling with -g fails -lint-core checks
-------------------------------------+-------------------------------------
        Reporter:  niteria           |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:
  (Debugging)                        |
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Compile-time      |  Unknown/Multiple
  crash or panic                     |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #14122, #14123,   |  Differential Rev(s):
  #8472, #14406                      |
       Wiki Page:                    |
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Comment (by simonpj):

 I think this is something to do with GHC's rules about top-level bindings.
 There's a special case for
 {{{
 x :: Addr#
 x = "flbha"#
 }}}
 which is allowed.

 But here we have
 {{{
 str_s2UI = src<Data.Fixed.hs:78:31-39> "MkFixed"#
 }}}
 One of two things should be true:

 * That is bad, and we should not allow it. In which case whichever code is
 generating it needs to be fixed.

 * That is ok, and Lint should accept it.

 I'm not sure which, because I'm not sure of the semantics of `src<blah>`
 ticks.  (A long-standing issue.)

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14779#comment:1>
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