ckane@best.com said:
> I am having a problem compiling libstdc++ from -current sources while
> doing "make build".
> [...]
> /usr/include/g++/function.h:141: warning: to refer to a type member of a template parameter,

No propblem for me.
It seems that your /usr/include/g++ includes are
out of date - the current "function.h" has only 93 lines
while the old gcc one matches the error output you cited.

best regards
Matthias