2016-06-20 François Dumont <fdumont@gcc.gnu.org>
PR libstdc++/71181
* include/tr1/hashtable_policy.h
(_Prime_rehash_policy::_M_next_bkt): Make past-the-end iterator
dereferenceable to avoid check on lower_bound result.
(_Prime_rehash_policy::_M_bkt_for_elements): Call latter.
(_Prime_rehash_policy::_M_need_rehash): Likewise.
* src/c++11/hashtable_c++0x.cc (_Prime_rehash_policy::_M_next_bkt):
Always return a value greater than input value. Set _M_next_resize to
max value when reaching highest prime number.
* src/shared/hashtable-aux.cc (__prime_list): Add comment about sentinel
being now useless.
* testsuite/23_containers/unordered_set/hash_policy/71181.cc: New.
* testsuite/23_containers/unordered_set/hash_policy/power2_rehash.cc
(test02): New.
* testsuite/23_containers/unordered_set/hash_policy/prime_rehash.cc: New.
* testsuite/23_containers/unordered_set/hash_policy/rehash.cc:
Fix indentation.
From-SVN: r237617
