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PR libstdc++/77864 * include/bits/stl_map.h (map::map()): Use nothrow constructibility of comparison function in conditional noexcept. * include/bits/stl_multimap.h (multimap::multimap()): Likewise. * include/bits/stl_multiset.h (multiset::multiset()): Likewise. * include/bits/stl_set.h (set::set()): Likewise. * testsuite/23_containers/map/cons/noexcept_default_construct.cc: New test. * testsuite/23_containers/multimap/cons/noexcept_default_construct.cc: Likewise. * testsuite/23_containers/multiset/cons/noexcept_default_construct.cc: Likewise. * testsuite/23_containers/set/cons/noexcept_default_construct.cc: Likewise. From-SVN: r240780
file: libstdc++-v3/README New users may wish to point their web browsers to the file index.html in the 'doc/html' subdirectory. It contains brief building instructions and notes on how to configure the library in interesting ways.