[Bug c++/77912] [C++17 feature] class template deduction fails in template functions and generic lambdas

[jason at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77912

--- Comment #5 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Mon Oct 10 20:48:51 2016
New Revision: 240948

URL: https://gcc.gnu.org/viewcvs?rev=240948&root=gcc&view=rev
Log:
C++17 class deduction issues

        PR c++/77890
        PR c++/77912
        * pt.c (do_class_deduction): Set cp_unevaluated_operand.
        (tsubst) [TEMPLATE_TYPE_PARM]: Copy CLASS_PLACEHOLDER_TEMPLATE.

Added:
    trunk/gcc/testsuite/g++.dg/cpp1z/class-deduction19.C
    trunk/gcc/testsuite/g++.dg/cpp1z/class-deduction20.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/pt.c