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[Bug libstdc++/51608] [4.7 Regression][C++11] Unordered containers end(size_type) isn't constant time
- From: "fdumont at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Thu, 29 Dec 2011 17:58:57 +0000
- Subject: [Bug libstdc++/51608] [4.7 Regression][C++11] Unordered containers end(size_type) isn't constant time
- Auto-submitted: auto-generated
- References: <bug-51608-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51608
--- Comment #1 from FranÃois Dumont <fdumont at gcc dot gnu.org> 2011-12-29 17:58:57 UTC ---
Author: fdumont
Date: Thu Dec 29 17:58:51 2011
New Revision: 182727
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=182727
Log:
2011-12-29 FranÃois Dumont <fdumont@gcc.gnu.org>
PR libstdc++/51608
* include/bits/hashtable_policy.h (_Equal_helper<>): New, change the
way the _Equal functor is used depending on whether hash code is
cached or not.
(_Ebo_helper<>): New helper type to introduce EBO when possible.
(_Hash_code_base): Use _Ebo_helper to limit memory footprint. Move
_Equal functor management...
(_Hashtable_base): ...here, new, use _Equal_helper.
(_Local_iterator_base<>, _Locale_iterator<>, _Locale_const_iterator<>):
New, use _Hash_code_base, implementation of...
* include/bits/hashtable.h (_Hashtable<>::local_iterator,
_Hashtable<>::const_local_iterator): ...those. Add static assertions
checking that some functors are empty depending on whether hash code
is cache or not.
(_Hashtable<>::_M_bucket_index): New overloads using current bucket
count, use through out the _Hastable<> implementation.
* include/bits/unordered_set.h (__unordered_set<>,
__unordered_multiset<>): Cache hash code iff hash functor is not
empty and not final.
* include/bits/unordered_map.h (__unordered_map<>,
__unordered_multimap<>): Likewise.
* include/debug/unordered_map
(unordered_map<>::_S_to_local, unordered_multimap<>::_S_to_local):
Adapt to match new local iterator implementation.
* include/debug/unordered_set (unordered_set<>::_S_to_local,
unordered_multiset<>::_S_to_local): Likewise.
* include/profile/unordered_map (unordered_map<>::_M_profile_destruct,
unordered_multimap<>::_M_profile_destruct): Enhance thanks to usage of
local iterators.
* include/profile/unordered_set (unordered_set<>::_M_profile_destruct,
unordered_multiset<>::_M_profile_destruct): Likewise.
* testsuite_files/23_containers/unordered_set/instantiation_neg.cc:
Fix error line.
* testsuite_files/23_containers/unordered_set/final_hash.cc: New.
* testsuite_files/23_containers/unordered_multiset/final_hash.cc: New.
* testsuite_files/23_containers/unordered_map/final_hash.cc: New.
* testsuite_files/23_containers/unordered_multimap/final_hash.cc: New.
Added:
trunk/libstdc++-v3/testsuite/23_containers/unordered_map/final_hash.cc
trunk/libstdc++-v3/testsuite/23_containers/unordered_multimap/final_hash.cc
trunk/libstdc++-v3/testsuite/23_containers/unordered_multiset/final_hash.cc
trunk/libstdc++-v3/testsuite/23_containers/unordered_set/final_hash.cc
Modified:
trunk/libstdc++-v3/ChangeLog
trunk/libstdc++-v3/include/bits/hashtable.h
trunk/libstdc++-v3/include/bits/hashtable_policy.h
trunk/libstdc++-v3/include/bits/unordered_map.h
trunk/libstdc++-v3/include/bits/unordered_set.h
trunk/libstdc++-v3/include/debug/unordered_map
trunk/libstdc++-v3/include/debug/unordered_set
trunk/libstdc++-v3/include/profile/unordered_map
trunk/libstdc++-v3/include/profile/unordered_set
trunk/libstdc++-v3/testsuite/23_containers/unordered_set/instantiation_neg.cc