re PR c++/42634 (ICE with -g -O2 -std=c++0x in copy_fn_p, at cp/decl.c:9973)
Fix PR c++/42634
gcc/cp/ChangeLog:
PR c++/42634
* error.c (dump_template_parms): Use innermost template
arguments before calling count_non_default_template_args.
(count_non_default_template_args): We are being called with
template innermost arguments now. There is no need to ensure
that again.
gcc/testsuite/ChangeLog:
PR c++/42634
* g++.dg/template/error45.C: New test.