id,summary,reporter,owner,description,type,status,priority,milestone,component,version,resolution,keywords,cc,os,architecture,failure,difficulty,testcase,blockedby,blocking,related
5564,Panic in ghci name suggestion,judahj,simonmar,"From a plain invocation of ghci:
{{{
$ ghci
GHCi, version 7.2.1: http://www.haskell.org/ghc/  :? for help
Loading package ghc-prim ... linking ... done.
Loading package integer-gmp ... linking ... done.
Loading package base ... linking ... done.
Loading package ffi-1.0 ... linking ... done.
Prelude> 2
2
Prelude> fit

<interactive>:0:1:ghc: panic! (the 'impossible' happened)
  (GHC version 7.2.1 for x86_64-apple-darwin):
	unknownNameSuggestErr UnhelpfulSpan

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

Prelude>
}}}

Presumably, ghci wants to suggest the `it` variable but is getting confused because that variable wasn't defined in a source file.

Note that this doesn't actually crash ghci; the prompt resumes as normal after the error message is printed out.",bug,closed,high,7.4.1,GHCi,7.2.1,fixed,,,Unknown/Multiple,Unknown/Multiple,None/Unknown,,,,,