[Bug c++/79592] incomplete diagnostic "is not usable as a constexpr function because:"

[nathan at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79592

--- Comment #8 from Nathan Sidwell <nathan at gcc dot gnu.org> ---
Author: nathan
Date: Mon Jan  6 15:22:54 2020
New Revision: 279903

URL: https://gcc.gnu.org/viewcvs?rev=279903&root=gcc&view=rev
Log:
PR c++/79592

        * g++.dg/ubsan/vptr-4.C: Add expected error.

Modified:
    branches/c++-modules/gcc/testsuite/g++.dg/ubsan/vptr-4.C