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This avoids the tuple-like API for std::pair in the unordered containers, removing some overly generic code. The _Select1st projection can figure out the member types of a std::pair without using decltype(std::get<0>(...)). We don't need _Select2nd because it's only needed in _NodeBuilder::_S_build, and that can just access the .second member of the pair directly. The return type of that function doesn't need to be deduced by decltype, we can just expose the __node_type typedef of the node generator. libstdc++-v3/ChangeLog: * include/bits/hashtable_policy.h (_Select1st): Replace use of std::get. (_Select2nd): Remove. (_NodeBuilder::_S_build): Use _NodeGenerator::__node_type typedef instead of deducing it. Remove unnecessary piecewise construction. (_ReuseOrAllocNode): Make __node_type public. (_Map_base): Adjust partial specialization to be able to extract the mapped_type without using tuple_element. (_Map_base::at): Define inline * testsuite/23_containers/unordered_map/requirements/53339.cc: Remove XFAIL. * testsuite/23_containers/unordered_multimap/requirements/53339.cc: Likewise. |
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| .. | ||
| 17_intro | ||
| 18_support | ||
| 19_diagnostics | ||
| 20_util | ||
| 21_strings | ||
| 22_locale | ||
| 23_containers | ||
| 24_iterators | ||
| 25_algorithms | ||
| 26_numerics | ||
| 27_io | ||
| 28_regex | ||
| 29_atomics | ||
| 30_threads | ||
| abi | ||
| backward | ||
| config | ||
| data | ||
| decimal | ||
| experimental | ||
| ext | ||
| lib | ||
| libstdc++-abi | ||
| libstdc++-dg | ||
| libstdc++-prettyprinters | ||
| libstdc++-xmethods | ||
| performance | ||
| special_functions | ||
| std | ||
| tr1 | ||
| tr2 | ||
| util | ||
| Makefile.am | ||
| Makefile.in | ||