/cp
2018-04-03 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/84768
* pt.c (rewrite_template_parm): If the first argument is
error_mark_node return it immediately.
(build_deduction_guide): Check the return value of the
latter for error_mark_node.
(do_class_deduction): Check the return value of the latter.
/testsuite
2018-04-03 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/84768
* g++.dg/cpp1z/class-deduction52.C: New.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@259049 138bc75d-0d04-0410-961f-82ee72b054a4