diff --git a/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.absolute/absolute.pass.cpp b/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.absolute/absolute.pass.cpp
--- a/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.absolute/absolute.pass.cpp
+++ b/libcxx/test/std/input.output/filesystems/fs.op.funcs/fs.op.absolute/absolute.pass.cpp
@@ -42,15 +42,16 @@
     } TestCases [] = {
         {"", cwd / ""},
         {"foo", cwd / "foo"},
-        {"foo/", cwd / "foo" / ""},
-        {"/already_absolute", cwd.root_path() / "already_absolute"}
+        {"foo/", cwd / "foo/"},
+        {"/already_absolute", cwd.root_name() / "/already_absolute"}
     };
     for (auto& TC : TestCases) {
         std::error_code ec = GetTestEC();
         const path ret = absolute(TC.input, ec);
         TEST_CHECK(!ec);
         TEST_CHECK(ret.is_absolute());
-        TEST_CHECK(PathEq(ret, TC.expect));
+        TEST_CHECK(PathEqIgnoreSep(ret, TC.expect));
+        LIBCPP_ONLY(TEST_CHECK(PathEq(ret, TC.expect)));
     }
 }
 
diff --git a/libcxx/test/support/filesystem_test_helper.h b/libcxx/test/support/filesystem_test_helper.h
--- a/libcxx/test/support/filesystem_test_helper.h
+++ b/libcxx/test/support/filesystem_test_helper.h
@@ -591,6 +591,12 @@
   return LHS.native() == RHS.native();
 }
 
+inline bool PathEqIgnoreSep(fs::path LHS, fs::path RHS) {
+  LHS.make_preferred();
+  RHS.make_preferred();
+  return LHS.native() == RHS.native();
+}
+
 struct ExceptionChecker {
   std::errc expected_err;
   fs::path expected_path1;