Opened 3 years ago

Closed 3 years ago

#7003 closed bug (invalid)

'impossible' compile time error, when using `runStream'.

Reported by: dbanas Owned by:
Priority: normal Milestone:
Component: Compiler Version: 7.0.3
Keywords: Cc:
Operating System: Linux Architecture: x86
Type of failure: Compile-time crash Test Case:
Blocked By: Blocking:
Related Tickets: Differential Revisions:

Description (last modified by simonpj)

ghc: panic! (the 'impossible' happened)
  (GHC version 7.0.3 for i386-unknown-linux):
	addTickHsExpr
    (|/\(@ a{tv aZE} [sk]).
      (arrows-0.4.4.0:Control.Arrow.Transformer.Stream.runStream{v rfV} [gid])
      @ t{tv aZY} [sk]
      @ a{tv aZE} [sk]
      @ t{tv a102} [sk]
      @ t{tv aZZ} [sk]
        $dArrowLoop{v aZF} [lid]
        ((\ ((x{v aZc} [lid] :: t{tv a102} [sk]))
            -> {49:30-52}
               ((base:Control.Arrow.loop{v 020} [gid[ClassOp]])
                @ (arrows-0.4.4.0:Control.Arrow.Transformer.Stream.StreamArrow{tc rgp}
                     t{tv aZY} [sk])
                  $dArrowLoop{v aZG} [lid])
               @ (t{tv a101} [sk], t{tv a102} [sk])
               @ d{tv a100} [sk]
               @ t{tv aZZ} [sk]
                 (((base:Control.Arrow.arr{v 01V} [gid[ClassOp]])
                   @ (arrows-0.4.4.0:Control.Arrow.Transformer.Stream.StreamArrow{tc rgp}
                        t{tv aZY} [sk])
                     $dArrow{v aZI} [lid])
                  @ ((t{tv a101} [sk], t{tv a102} [sk]), d{tv a100} [sk])
                  @ (t{tv aZZ} [sk], d{tv a100} [sk])
                    k{v aZ9} [lid]) -< (s0{v aZa} [lid], x{v aZc} [lid])))|)

Please report this as a GHC bug:  http://www.haskell.org/ghc/reportabug

Change History (4)

comment:1 Changed 3 years ago by guest

@dbananas: Please give source giving the error. Also the error says that's 7.0.3; can you upgrade to 7.4.2 and see if it still happens?

comment:2 Changed 3 years ago by simonpj

  • Description modified (diff)
  • difficulty set to Unknown

comment:3 Changed 3 years ago by simonmar

  • Status changed from new to infoneeded
  • Version changed from 7.4.2 to 7.0.3

Please tell us how to reproduce the error.

comment:4 Changed 3 years ago by igloo

  • Resolution set to invalid
  • Status changed from infoneeded to closed

No response from submitter, so closing

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