[Bug libstdc++/64650] std::experimental::bad_optional_access is not default constructible

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64650

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Tue Jan 20 11:51:03 2015
New Revision: 219889

URL: https://gcc.gnu.org/viewcvs?rev=219889&root=gcc&view=rev
Log:
    PR libstdc++/64650
    * include/experimental/optional (bad_optional_access): Add default
    constructor.
    * testsuite/experimental/optional/requirements.cc: Test for default
    constructor.

Modified:
    trunk/libstdc++-v3/ChangeLog
    trunk/libstdc++-v3/include/experimental/optional
    trunk/libstdc++-v3/testsuite/experimental/optional/requirements.cc