[Bug c++/82336] [6/7/8 Regression] GCC requires but does not emit defaulted constructors in certain cases

[jason at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82336

--- Comment #6 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Wed Mar 14 01:03:13 2018
New Revision: 258512

URL: https://gcc.gnu.org/viewcvs?rev=258512&root=gcc&view=rev
Log:
        PR c++/82336 - link error with list-init default argument.

        * decl.c (check_default_argument): Unshare an initializer list.

Added:
    trunk/gcc/testsuite/g++.dg/cpp0x/initlist-defarg2.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/decl.c