On Sep 19 2016, François Dumont <frs.dum...@gmail.com> wrote: > diff --git > a/libstdc++-v3/testsuite/23_containers/vector/debug/mutex_association.cc > b/libstdc++-v3/testsuite/23_containers/vector/debug/mutex_association.cc > new file mode 100644 > index 0000000..a3c56e2 > --- /dev/null > +++ b/libstdc++-v3/testsuite/23_containers/vector/debug/mutex_association.cc > @@ -0,0 +1,42 @@ > +// Copyright (C) 2016 Free Software Foundation, Inc. > +// > +// This file is part of the GNU ISO C++ Library. This library is free > +// software; you can redistribute it and/or modify it under the > +// terms of the GNU General Public License as published by the > +// Free Software Foundation; either version 3, or (at your option) > +// any later version. > +// > +// This library is distributed in the hope that it will be useful, > +// but WITHOUT ANY WARRANTY; without even the implied warranty of > +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the > +// GNU General Public License for more details. > +// > +// You should have received a copy of the GNU General Public License along > +// with this library; see the file COPYING3. If not see > +// <http://www.gnu.org/licenses/>. > +// > + > +#include <set> > +#include <debug/vector> > + > +#include <testsuite_hooks.h> > + > +class container : public __gnu_debug::_Safe_sequence<container> > +{ > +public: > + __gnu_cxx::__mutex& > + get_mutex() > + { return this->_M_get_mutex(); } > +}; > + > +int > +main() > +{ > + std::set<__gnu_cxx::__mutex*> mutexes; > + container conts[17]; > + > + for (int i = 0; i != 16; ++i) > + VERIFY( mutexes.insert(&conts[i].get_mutex()).second );
There will be less than 16 unique mutexes, if sizeof(container) has more trailing zero bits than alignof(__gnu_debug::vector<int>). Andreas. -- Andreas Schwab, sch...@linux-m68k.org GPG Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5 "And now for something completely different."
