haddock: internal error: evacuate: strange closure type 19269

Here are the last few lines of make output

"rm" -f libraries/unix/dist-install/build/libHSunix-2.4.0.0_p.a
(echo   libraries/unix/dist-install/build/cbits/HsUnix.p_o libraries/unix/dist-install/build/cbits/execvpe.p_o libraries/unix/dist-install/build/cbits/dirUtils.p_o     `/usr/bin/find libraries/unix/dist-install/build -name "*_stub.p_o" -print`; /usr/bin/find libraries/unix/dist-install/build/System/Posix_p_o_split libraries/unix/dist-install/build/System/Posix/DynamicLinker/Module_p_o_split libraries/unix/dist-install/build/System/Posix/DynamicLinker/Prim_p_o_split libraries/unix/dist-install/build/System/Posix/Directory_p_o_split libraries/unix/dist-install/build/System/Posix/DynamicLinker_p_o_split libraries/unix/dist-install/build/System/Posix/Env_p_o_split libraries/unix/dist-install/build/System/Posix/Error_p_o_split libraries/unix/dist-install/build/System/Posix/Files_p_o_split libraries/unix/dist-install/build/System/Posix/IO_p_o_split libraries/unix/dist-install/build/System/Posix/Process_p_o_split libraries/unix/dist-install/build/System/Posix/Process/Internals_p_o_split libraries/unix/dist-install/build/System/Posix/Resource_p_o_split libraries/unix/dist-install/build/System/Posix/Temp_p_o_split libraries/unix/dist-install/build/System/Posix/Terminal_p_o_split libraries/unix/dist-install/build/System/Posix/Time_p_o_split libraries/unix/dist-install/build/System/Posix/Unistd_p_o_split libraries/unix/dist-install/build/System/Posix/User_p_o_split libraries/unix/dist-install/build/System/Posix/Signals_p_o_split libraries/unix/dist-install/build/System/Posix/Signals/Exts_p_o_split libraries/unix/dist-install/build/System/Posix/Semaphore_p_o_split libraries/unix/dist-install/build/System/Posix/SharedMem_p_o_split -name '*.p_o' -print) | "xargs"  "/usr/bin/ar" clqs  libraries/unix/dist-install/build/libHSunix-2.4.0.0_p.a
"inplace/bin/mkdirhier" libraries/unix/dist-install/doc/html/unix/
"inplace/bin/ghc-cabal" haddock dist-install libraries/unix --with-haddock=/Users/dbueno/Downloads/ghc-6.12.1/inplace/bin/haddock --with-ghc=/Users/dbueno/Downloads/ghc-6.12.1/inplace/bin/ghc-stage2  
Running Haddock for unix-2.4.0.0...
Preprocessing library unix-2.4.0.0...
Warning: The documentation for the following packages are not installed. No
links will be generated to these packages: ffi-1.0, rts-1.0
haddock: internal error: evacuate: strange closure type 19269
    (GHC version 6.12.1 for powerpc_apple_darwin)
    Please report this as a GHC bug:  http://www.haskell.org/ghc/reportabug
make[1]: *** [libraries/unix/dist-install/doc/html/unix/unix.haddock] Error 6
make: *** [all] Error 2

I did the following to build:

./configure --prefix=/usr/local/ghc-6.12.4
make

I'm on Darwin power-mac-g5.local 9.7.0 Darwin Kernel Version 9.7.0: Tue Mar 31 22:54:29 PDT 2009; root:xnu-1228.12.14~1/RELEASE_PPC Power Macintosh.

What other information do you need?

Trac metadata

Trac field	Value
Version	6.12.1
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Compiler
Test case
Differential revisions
BlockedBy
Related
Blocking
CC
Operating system
Architecture	powerpc64