id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	os	architecture	failure	difficulty	testcase	blockedby	blocking	related
6151	typePrimRep: UbxTupleRep	simonmar		"A handful of new failures appeared in the nightly build recently, perhaps as a result of the changes to unboxed tuple handling.  The failures are all with GHCi.

e.g.

{{{
'/64playpen/simonmar/nightly/HEAD-cam-04-unx/x86_64-unknown-linux/inplace/bin/ghc-stage2' -fforce-recomp -dcore-lint -dcmm-lint -dno-debug-output -no-user-package-conf -rtsopts  -fno-ghci-history cgrun064.hs --interactive -ignore-dot-ghci +RTS -I0.1 -RTS    
GHCi, version 7.5.20120607: http://www.haskell.org/ghc/  :? for help
Loading package ghc-prim ... linking ... done.
Loading package integer-gmp ... linking ... done.
Loading package base ... linking ... done.
[1 of 1] Compiling Main             ( cgrun064.hs, interpreted )
ghc-stage2: panic! (the 'impossible' happened)
  (GHC version 7.5.20120607 for x86_64-unknown-linux):
        typePrimRep: UbxTupleRep
    (# ghc-prim:GHC.Prim.State#{(w) tc 32q} s{tv v} [tv],
       ghc-prim:GHC.Prim.MutableArray#{(w) tc 31m}
         s{tv v} [tv] a{tv u} [tv] #)
}}}


The full set of failures is:

{{{
   array/should_run                        arr020 [bad stdout or stderr] (ghci)
   codeGen/should_run                      cgrun064 [bad stdout or stderr] (ghci)
   codeGen/should_run                      cgrun065 [bad stdout or stderr] (ghci)
   codeGen/should_run                      cgrun068 [bad stdout or stderr] (ghci)
   codeGen/should_run                      cgrun070 [bad stdout or stderr] (ghci)
}}}
"	bug	closed	highest	7.6.1	Compiler	7.5	fixed			Unknown/Multiple	Unknown/Multiple	None/Unknown	Unknown