llvm/libcxx/test/std/ranges/range.adaptors/range.adaptor.object/ Source Tree

../
range_adaptor_closure.pass.cpp Foo callable is_range main negate_fn not_callable_1 not_callable_2 not_derived_from_1 not_derived_from_2 not_derived_from_3 not_derived_from_4 plus_1_fn