diff --git a/lldb/test/API/commands/expression/import-std-module/deque-basic/TestDequeFromStdModule.py b/lldb/test/API/commands/expression/import-std-module/deque-basic/TestDequeFromStdModule.py
--- a/lldb/test/API/commands/expression/import-std-module/deque-basic/TestDequeFromStdModule.py
+++ b/lldb/test/API/commands/expression/import-std-module/deque-basic/TestDequeFromStdModule.py
@@ -10,7 +10,6 @@
 class TestBasicDeque(TestBase):
 
     @add_test_categories(["libc++"])
-    @expectedFailureDarwin # FIXME: May need to force system libcxx here.
     @skipIf(compiler=no_match("clang"))
     def test(self):
         self.build()
@@ -31,7 +30,7 @@
         ]
         riterator = "reverse_iterator"
         riterator_children = [
-            ValueCheck(name="__t"),
+            ValueCheck(), # Deprecated __t_ member; no need to check
             ValueCheck(name="current")
         ]
 
diff --git a/lldb/test/API/commands/expression/import-std-module/deque-dbg-info-content/TestDbgInfoContentDequeFromStdModule.py b/lldb/test/API/commands/expression/import-std-module/deque-dbg-info-content/TestDbgInfoContentDequeFromStdModule.py
--- a/lldb/test/API/commands/expression/import-std-module/deque-dbg-info-content/TestDbgInfoContentDequeFromStdModule.py
+++ b/lldb/test/API/commands/expression/import-std-module/deque-dbg-info-content/TestDbgInfoContentDequeFromStdModule.py
@@ -10,7 +10,6 @@
 class TestDbgInfoContentDeque(TestBase):
 
     @add_test_categories(["libc++"])
-    @expectedFailureDarwin # FIXME: May need to force system libcxx here.
     @skipIf(compiler=no_match("clang"))
     def test(self):
         self.build()
@@ -33,7 +32,7 @@
 
         riterator_type = "reverse_iterator"
         riterator_children = [
-            ValueCheck(name="__t"),
+            ValueCheck(), # Deprecated __t_ member; no need to check
             ValueCheck(name="current")
         ]
 
diff --git a/lldb/test/API/commands/expression/import-std-module/vector-dbg-info-content/TestDbgInfoContentVectorFromStdModule.py b/lldb/test/API/commands/expression/import-std-module/vector-dbg-info-content/TestDbgInfoContentVectorFromStdModule.py
--- a/lldb/test/API/commands/expression/import-std-module/vector-dbg-info-content/TestDbgInfoContentVectorFromStdModule.py
+++ b/lldb/test/API/commands/expression/import-std-module/vector-dbg-info-content/TestDbgInfoContentVectorFromStdModule.py
@@ -11,7 +11,6 @@
 class TestDbgInfoContentVector(TestBase):
 
     @add_test_categories(["libc++"])
-    @expectedFailureDarwin # FIXME: May need to force system libcxx here.
     @skipIf(compiler=no_match("clang"))
     def test(self):
         self.build()
@@ -30,7 +29,7 @@
         iterator_children = [ValueCheck(name="item")]
         riterator = "reverse_iterator"
         riterator_children = [
-            ValueCheck(name="__t"),
+            ValueCheck(), # Deprecated __t_ member; no need to check
             ValueCheck(name="current")
         ]
 
diff --git a/lldb/test/API/commands/expression/import-std-module/vector/TestVectorFromStdModule.py b/lldb/test/API/commands/expression/import-std-module/vector/TestVectorFromStdModule.py
--- a/lldb/test/API/commands/expression/import-std-module/vector/TestVectorFromStdModule.py
+++ b/lldb/test/API/commands/expression/import-std-module/vector/TestVectorFromStdModule.py
@@ -10,7 +10,6 @@
 class TestBasicVector(TestBase):
 
     @add_test_categories(["libc++"])
-    @expectedFailureDarwin # FIXME: May need to force system libcxx here.
     @skipIf(compiler=no_match("clang"))
     def test(self):
         self.build()
@@ -29,7 +28,7 @@
         iterator_children = [ValueCheck(name="item")]
         riterator = "reverse_iterator"
         riterator_children = [
-            ValueCheck(name="__t"),
+            ValueCheck(), # Deprecated __t_ member; no need to check
             ValueCheck(name="current")
         ]