Reviewed By: #libc, ldionne Spies: mgorny, var-const, ormris, philnik, miscco, hiraditya, steven_wu, jkorous, ldionne, christof, libcxx-commits Differential Revision: https://reviews.llvm.org/D68365
Add test coverage for `vector<bool>::reference` Reviewed By: Quuxplusone, ldionne, #libc Spies: libcxx-commits Differential Revision: https://reviews.llvm.org/D117780