[Bug c++/89900] [9 Regression] ICE: Segmentation fault (in check_instantiated_arg)

[paolo at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89900

--- Comment #8 from paolo at gcc dot gnu.org <paolo at gcc dot gnu.org> ---
Author: paolo
Date: Fri Apr 19 15:36:20 2019
New Revision: 270459

URL: https://gcc.gnu.org/viewcvs?rev=270459&root=gcc&view=rev
Log:
/cp
2019-04-19  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/89900
        * pt.c (fn_type_unification): When handling null explicit
        arguments do not special case non-parameter packs.

/testsuite
2019-04-19  Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/89900
        * g++.dg/cpp0x/pr89900-1.C: New.
        * g++.dg/cpp0x/pr89900-2.C: Likewise.
        * g++.dg/cpp0x/pr89900-3.C: Likewise.
        * g++.dg/cpp0x/pr89900-4.C: Likewise.

Added:
    trunk/gcc/testsuite/g++.dg/cpp0x/pr89900-1.C
    trunk/gcc/testsuite/g++.dg/cpp0x/pr89900-2.C
    trunk/gcc/testsuite/g++.dg/cpp0x/pr89900-3.C
    trunk/gcc/testsuite/g++.dg/cpp0x/pr89900-4.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/pt.c
    trunk/gcc/testsuite/ChangeLog