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PR libstdc++/80285 * include/bits/shared_ptr_base.h (_Sp_make_shared_tag::_S_ti): Define function to get unique fake std::type_info reference. (_Sp_counted_ptr_inplace::_M_get_deleter) [!__cpp_rtti]: Compare to _S_ti() fake reference. (__shared_ptr(_Sp_make_shared_tag, const Alloc&, Args&&...)): Share single implementation with or without RTTI enable. [!__cpp_rtti]: Pass fake reference to _M_get_deleter. * testsuite/20_util/shared_ptr/creation/alloc.cc: Change expected allocation and deallocation counts. * testsuite/20_util/shared_ptr/creation/single_allocation.cc: New. * testsuite/20_util/shared_ptr/creation/single_allocation_no_rtti.cc: New. From-SVN: r247905
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