gcc-4.0.1: ICE in write_template_arg_literal, at cp/mangle.c:2203

[Daniel Kegel]

I ran into a template-y ICE building a real app with gcc-4.0.1:

my-callback-specializations.h: At global scope:
my-callback-specializations.h: In instantiation of 
'_MemberResultCallback_0_1<true, void, MyFlow, MyScheduler::Status>':
my-flow.cc:894:   instantiated from here
my-callback-specializations.h:2064: internal compiler error: in 
write_template_arg_literal, at cp/mangle.c:2203

I'm trying to find a reduced testcase, but it might
take a while.  I'm posting this in case it rings a bell
for anybody; maybe the ICE message is enough by itself
for them to see what's wrong...?