GHC-6.12.1-RC2-20091121 build fails when using stage-1 compiler

When trying to build RC2 (20091121) under Solaris 10, I encountered the following error when building the ghc-prim with the stage-1 compiler:

1. .. previous output containing many of these:

/bin/sh: syntax error at line 1:;' unexpected`

Then

"inplace/bin/ghc-stage1"   -H32m -O    -package-name ghc-prim-0.2.0.0 
-hide-all-packages -i -ilibraries/ghc-prim/. -ilibraries/ghc-prim/dist-install/build 
-ilibraries/ghc-prim/dist-install/build/autogen -Ilibraries/ghc-prim/dist-install/build
 -Ilibraries/ghc-prim/dist-install/build/autogen -Ilibraries/ghc-prim/.  
  -optP-include -optPlibraries/ghc-prim/dist-install/build/autogen/cabal_macros.h 
-package rts-1.0 -split-objs -package-name ghc-prim -XCPP -XMagicHash 
-XForeignFunctionInterface -XUnliftedFFITypes -XUnboxedTuples -XEmptyDataDecls 
-XNoImplicitPrelude -O2 -XGenerics -fno-warn-deprecated-flags    
 -odir libraries/ghc-prim/dist-install/build 
-hidir libraries/ghc-prim/dist-install/build 
-stubdir libraries/ghc-prim/dist-install/build -hisuf hi -osuf  o -hcsuf hc 
-c libraries/ghc-prim/./GHC/Types.hs -o libraries/ghc-prim/dist-install/build/GHC/Types.o
ghc-stage1: panic! (the 'impossible' happened)
  (GHC version 6.12.0.20091121 for sparc-sun-solaris2):
	Error in array index

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

make[1]: *** [libraries/ghc-prim/dist-install/build/GHC/Types.o] Error 1
make: *** [all] Error 2

Additional information: To get this far, I built from source and installed the following libraries (in custom locations): gcc-4.1.2, gmp-4.3.1, autoconf-2.64, automake-1.11, libiconv-1.11, m4-1.4.12, make-3.81, ncurses-5.7, readline-5.2, sed-4.2.1. Before installing the sed-4.2.1, I hit another error, described in [/trac/ghc/ticket/3683] . This ticket also describes the messages about the ';' unexpected.

Before failing on GHC/Types.hs, the stage-1 compiler compiled one file, GHC/Generics.hs, and generated dependencies in various packages.

Trac metadata

Trac field	Value
Version	6.12.1 RC1
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Compiler
Test case
Differential revisions
BlockedBy
Related
Blocking
CC	berthold@diku.dk
Operating system
Architecture