[GHC] #7736: Parallel array enumeration causes compiler panic (enumFromToP)

[Simon Peyton-Jones]

Manuel, is this something you might look at in due course?

Simon

| -----Original Message-----
| From: ghc-tickets-bounces at haskell.org [mailto:ghc-tickets-
| bounces at haskell.org] On Behalf Of GHC
| Sent: 04 March 2013 00:17
| Cc: ghc-tickets at haskell.org
| Subject: [GHC] #7736: Parallel array enumeration causes compiler panic
| (enumFromToP)
| 
| #7736: Parallel array enumeration causes compiler panic (enumFromToP)
| -------------------------------+----------------------------------------
| -------------------------------+----
| Reporter:  amosrobinson        |          Owner:
|     Type:  bug                 |         Status:  new
| Priority:  normal              |      Component:  Compiler
|  Version:  7.6.2               |       Keywords:
|       Os:  Unknown/Multiple    |   Architecture:  Unknown/Multiple
|  Failure:  Compile-time crash  |      Blockedby:
| Blocking:                      |        Related:
| -------------------------------+----------------------------------------
| -------------------------------+----
|  Enumeration doesn't work in parallel array comprehensions:
| 
|  {{{
|  nums = [: 0 .. 100 :]
|  }}}
| 
|  causes a compiler panic. Interestingly, the panic seems to happen
| before  typechecking because if we add some nonsense:
| 
|  {{{
|  other = 5 / "bad"
|  nums = [: 0 .. 100 :]
|  }}}
| 
|  it still panics.
| 
| --
| Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7736>
| GHC <http://www.haskell.org/ghc/>
| The Glasgow Haskell Compiler
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