crashes building on Darwin using GCC trunk

[David Edelsohn]

	The GCC trunk has been broken on PowerPC since the beginning of
May.  This has been reported a few times.

	No one knows who broke it (is Geoff's regression tester testing
the gcc-3.0 branch or the trunk?) and no one has stepped up to fix it,
although gcc-3.0 release should be everyone's primary focus.

David