https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111284
--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Created attachment 57648 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=57648&action=edit gcc14-pr111284.patch So, I've tried to fix this by constexpr evaluating the arguments passed to PARM_DECLs with TREE_ADDRESSABLE types in the caller as lvalues rather than rvaluea and later, if we try to evaluate the PARM_DECL in the callee as lval, lookup the value and use that, if it is rval constexpr evaluate again as rvalue. There is a complication for qualified type, say if the argument is const in the callee and caller is passing reference to non-const, adjust_temp_type can't handle that when it isn't a rvalue.
