id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	os	architecture	failure	difficulty	testcase	blockedby	blocking	related
7538	Panic on Irrefutable Pattern Failure	eli_sennesh		"{{{
esennesh@lap282:~/Programs$ ghc herps.hs 
[1 of 1] Compiling Herps            ( herps.hs, herps.o )
ghc: panic! (the 'impossible' happened)
  (GHC version 7.4.2 for x86_64-unknown-linux):
	compiler/rename/RnSource.lhs:430:14-81: Irrefutable pattern failed for pattern Data.Maybe.Just (inst_tyvars,
                                                        _,
                                                        SrcLoc.L _ cls,
                                                        _)


Please report this as a GHC bug:  http://www.haskell.org/ghc/reportabug
}}}
"	bug	closed	normal		Compiler	7.4.2	duplicate			Linux	x86_64 (amd64)	Runtime crash