[GHC] #13499: "Panic: no skolem info" with StaticPointers and typed hole

[GHC]

#13499: "Panic: no skolem info" with StaticPointers and typed hole
-------------------------------------+-------------------------------------
        Reporter:  Otini             |                Owner:  (none)
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.0.1
      Resolution:                    |             Keywords:
                                     |  StaticPointers, TypedHoles
Operating System:  Linux             |         Architecture:  x86_64
 Type of failure:  Compile-time      |  (amd64)
  crash or panic                     |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:  #15035            |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by sighingnow):

 I have noticed another interesting behavior, when compile the program in
 description with

 {{{
 inplace/bin/ghc-stage2.exe --make T.hs
 }}}

 The ghc-stage2.exe panics within 5 seconds. However, if I dump the tc
 trace,

 {{{
 inplace/bin/ghc-stage2.exe --make T.hs -ddump-tc-trace
 }}}

 The ghc-stage2.exe runs into infinite loop and continues to produce a huge
 dump file.

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13499#comment:4>
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