[Bug c++/84593] [6/7/8 Regression] internal compiler error: Segmentation fault (non_type_check())

[aoliva at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84593

--- Comment #3 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
Author: aoliva
Date: Tue Mar  6 06:24:53 2018
New Revision: 258270

URL: https://gcc.gnu.org/viewcvs?rev=258270&root=gcc&view=rev
Log:
[PR c++/84593] ice on braced init with uninit ref field

If an initializer expr is to be NULL in a ctor initializer list, we
ICE in picflag_from_initializer and elsewhere.

If we're missing an initializer for a reference field, we report the
error, but then build a zero initializer to avoid the ICE.

for  gcc/cp/ChangeLog

        PR c++/84593
        * init.c (build_zero_init_1): Zero-initialize references.

for  gcc/testsuite/ChangeLog

        PR c++/84593
        * g++.dg/cpp1y/pr84593.C: New.

Added:
    trunk/gcc/testsuite/g++.dg/cpp1y/pr84593.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/init.c
    trunk/gcc/testsuite/ChangeLog