[GHC] #13417: piResultTys1

[GHC]

#13417: piResultTys1
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        Reporter:  ralf              |                Owner:  (none)
            Type:  bug               |               Status:  merge
        Priority:  normal            |            Milestone:  8.0.3
       Component:  Compiler          |              Version:  8.0.2
      Resolution:                    |             Keywords:
Operating System:  Linux             |         Architecture:  x86_64
 Type of failure:  Compile-time      |  (amd64)
  crash or panic                     |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Changes (by bgamari):

 * milestone:   => 8.0.3


Old description:

> Error provoked by attached H98 program (which is generated by a program);
> compiles fine without optimizations; compilation with -O2 crashes:
>
> $ ghc --make -O2 FactorialSequ.lhs
> [1 of 1] Compiling FactorialSequ    ( FactorialSequ.lhs, FactorialSequ.o
> )
> ghc: panic! (the 'impossible' happened)
>   (GHC version 8.0.2 for x86_64-unknown-linux):
>         piResultTys1
>   Sequ7 t_a2zl
>   [a_a2zm]

New description:

 Error provoked by attached H98 program (which is generated by a program);
 compiles fine without optimizations; compilation with -O2 crashes:

 {{{
 $ ghc --make -O2 FactorialSequ.lhs
 [1 of 1] Compiling FactorialSequ    ( FactorialSequ.lhs, FactorialSequ.o )
 ghc: panic! (the 'impossible' happened)
   (GHC version 8.0.2 for x86_64-unknown-linux):
         piResultTys1
   Sequ7 t_a2zl
   [a_a2zm]
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13417#comment:11>
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