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