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gcc/cp/ * class.c (add_implicitly_declared_members): A class with no explicitly declared copy or move constructor gets both declared implicitly, and similarly for operator=. (check_bases): A type with no copy ctor does not inhibit a const copy ctor in a derived class. (check_field_decl): Likewise. (check_bases_and_members): A nonexistent copy ctor/op= is non-trivial. * tree.c (type_has_nontrivial_copy_init): Adjust semantics. (trivially_copyable_p): Likewise. * call.c (convert_like_real): Use type_has_nontrivial_copy_init. * class.c (finish_struct_bits): Likewise. * tree.c (build_target_expr_with_type): Likewise. * typeck2.c (store_init_value): Likewise. libstdc++-v3/ * include/bits/unordered_map.h: Explicitly default copy constructors. * include/bits/unordered_set.h: Likewise. From-SVN: r161582
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.