https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89164
--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> --- Author: redi Date: Fri Aug 30 13:54:49 2019 New Revision: 275177 URL: https://gcc.gnu.org/viewcvs?rev=275177&root=gcc&view=rev Log: PR libstdc++/89164 enforce constraints for uninitialized algos The memmove optimizations for std::uninitialized_copy/fill/_n will compile even if the type is not copy constructible, because std::copy doesn't require copy construction to work. But the uninitialized algorithms do require it. This adds explicit static assertions to ensure we don't allow ill-formed initializations. PR libstdc++/89164 * include/bits/stl_algobase.h (__copy_move): Give descriptive names to template parameters. * include/bits/stl_uninitialized.h (uninitialized_copy) (uninitialized_fill, uninitialized_fill_n): Add static assertions to diagnose invalid uses. * testsuite/20_util/specialized_algorithms/uninitialized_copy/1.cc: Adjust expected error. * testsuite/20_util/specialized_algorithms/uninitialized_copy/89164.cc: New test. * testsuite/20_util/specialized_algorithms/uninitialized_copy_n/ 89164.cc: New test. * testsuite/20_util/specialized_algorithms/uninitialized_fill/89164.cc: New test. * testsuite/20_util/specialized_algorithms/uninitialized_fill_n/ 89164.cc: New test. * testsuite/23_containers/vector/cons/89164.cc: New test. * testsuite/23_containers/vector/cons/89164_c++17.cc: New test. Added: trunk/libstdc++-v3/testsuite/20_util/specialized_algorithms/uninitialized_copy/89164.cc - copied, changed from r275063, trunk/libstdc++-v3/testsuite/20_util/specialized_algorithms/uninitialized_copy/1.cc trunk/libstdc++-v3/testsuite/20_util/specialized_algorithms/uninitialized_copy_n/89164.cc - copied, changed from r275063, trunk/libstdc++-v3/testsuite/20_util/specialized_algorithms/uninitialized_copy/1.cc trunk/libstdc++-v3/testsuite/20_util/specialized_algorithms/uninitialized_fill/89164.cc - copied, changed from r275063, trunk/libstdc++-v3/testsuite/20_util/specialized_algorithms/uninitialized_copy/1.cc trunk/libstdc++-v3/testsuite/20_util/specialized_algorithms/uninitialized_fill_n/89164.cc - copied, changed from r275063, trunk/libstdc++-v3/testsuite/20_util/specialized_algorithms/uninitialized_copy/1.cc trunk/libstdc++-v3/testsuite/23_containers/vector/cons/89164.cc - copied, changed from r275063, trunk/libstdc++-v3/testsuite/20_util/specialized_algorithms/uninitialized_copy/1.cc trunk/libstdc++-v3/testsuite/23_containers/vector/cons/89164_c++17.cc Modified: trunk/libstdc++-v3/ChangeLog trunk/libstdc++-v3/include/bits/stl_algobase.h trunk/libstdc++-v3/include/bits/stl_uninitialized.h trunk/libstdc++-v3/testsuite/20_util/specialized_algorithms/uninitialized_copy/1.cc
