GUB error with unpure-pure-container.cc

[Phil Holmes]

I accidentally mucked up some of my GUB set up, so have been essentially 
rebuilding from scratch.  In doing so, I get this error:

/home/gub/gub/target/darwin-ppc/src/lilypond-git.sv.gnu.org--lilypond.git-release-unstable/lily/unpure-pure-container.cc:140: 
error:   initializing argument 2 of 'void scm_set_smob_apply(scm_t_bits, 
scm_unused_struct* (*)(...), unsigned int, unsigned int, unsigned int)'

and GUB fails.  I don't understand why it should fail on GUB and not on a 
normal make, but there you go.  It looks like 
4961143c8c79984852c575e2b2b3922e5f7540ce is the change causing the problem. 
Can't build a new release until this is attended to, so help is required, 
please.

--
Phil Holmes