Problems compiling Mozilla with GCC 4.5

[Ehren Metcalfe]

I've recently come across a couple of issues trying to compile Firefox
trunk with 4.5 (I have a very simple plugin that I need to run on
mozilla-central). I've posted two bugs here
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42139 and here
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42171

I''m not particularly concerned about the first, which can be bypassed
by disabling optimization on the problem file, but the second, a link
error, is a show stopper. Can anyone think of a way to sidestep the
problem? I'm not even sure I've addressed the bug to the right place,
but it would seem that if the same version of ld chokes during a 4.5
compile, but does fine with an earlier version of gcc, then it's
really not a binutils issue. I'm a bit out of my element here though
so any suggestions would be welcome.

Ehren