7.10.1RC2 compile problem? ghc: internal error: PAP object entered!

Maybe this is something I shouldn't be doing, but I thought it was worth mentioning in case I have found a compiler bug. Should I file a bug for this? cabal install *--allow-newer=base* accelerate ... [10 of 10] Compiling Data.Label.Base ( src/Data/Label/Base.hs, dist/build/Data/Label/Base.o ) ghc: internal error: PAP object entered! (GHC version 7.10.0.20150123 for x86_64_apple_darwin) Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug