https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95036
--- Comment #9 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The trunk branch has been updated by Jason Merrill <ja...@gcc.gnu.org>: https://gcc.gnu.org/g:3ea64aad06a2b32739028bae03b9b9a5691d2d30 commit r13-6693-g3ea64aad06a2b32739028bae03b9b9a5691d2d30 Author: Jason Merrill <ja...@redhat.com> Date: Fri Mar 10 14:55:27 2023 -0500 c++: passing one ttp to another [PR108179] I kept trying to improve our choice of how many levels of outer_args to add, when really the problem was that outer_args are for PARM and for this reverse deduction we should be adding the outer arguments for ARG. I spent quite a while trying to get DECL_CONTEXT set consistently on template template parameters that have gone through reduce_template_parm_level before I realized I could just use current_scope(). PR c++/108179 PR c++/104107 PR c++/95036 gcc/cp/ChangeLog: * pt.cc (coerce_template_template_parms): Use args from DECL_CONTEXT (arg_tmpl) instead of outer_args. gcc/testsuite/ChangeLog: * g++.dg/template/ttp35.C: New test.
