[Bug libstdc++/45133] [c++0x] std::future will crash with NULL deref if get() is called twice

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45133

--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> 2010-12-14 
23:27:20 UTC ---
Author: redi
Date: Tue Dec 14 23:27:17 2010
New Revision: 167823

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=167823
Log:
2010-12-14  Jonathan Wakely  <jwakely....@gmail.com>

    PR libstdc++/45133
    * include/std/future (__basic_future::wait): Throw if not valid.
    (__basic_future::wait_for): Likewise.
    (__basic_future::wait_until): Likewise.
    (__basic_future::_M_get_result): Likewise.
    * testsuite/30_threads/future/members/45133.cc: New.
    * testsuite/30_threads/shared_future/members/45133.cc: New.

Added:
    trunk/libstdc++-v3/testsuite/30_threads/future/members/45133.cc
    trunk/libstdc++-v3/testsuite/30_threads/shared_future/members/45133.cc
Modified:
    trunk/libstdc++-v3/ChangeLog
    trunk/libstdc++-v3/include/std/future