diff --git a/lldb/source/Plugins/TypeSystem/Clang/TypeSystemClang.cpp b/lldb/source/Plugins/TypeSystem/Clang/TypeSystemClang.cpp
--- a/lldb/source/Plugins/TypeSystem/Clang/TypeSystemClang.cpp
+++ b/lldb/source/Plugins/TypeSystem/Clang/TypeSystemClang.cpp
@@ -2499,6 +2499,7 @@
     case clang::Type::Decltype:
     case clang::Type::Elaborated:
     case clang::Type::Paren:
+    case clang::Type::SubstTemplateTypeParm:
     case clang::Type::TemplateSpecialization:
     case clang::Type::Typedef:
     case clang::Type::TypeOf:
diff --git a/lldb/test/API/lang/cpp/subst_template_type_param/TestSubstTemplateTypeParam.py b/lldb/test/API/lang/cpp/subst_template_type_param/TestSubstTemplateTypeParam.py
new file mode 100644
--- /dev/null
+++ b/lldb/test/API/lang/cpp/subst_template_type_param/TestSubstTemplateTypeParam.py
@@ -0,0 +1,34 @@
+"""
+Test SubstTemplateTypeParam types which are produced as type sugar
+when template type parameters are used for example as field types.
+"""
+
+import lldb
+import lldbsuite.test.lldbutil as lldbutil
+from lldbsuite.test.lldbtest import *
+from lldbsuite.test import decorators
+
+class TestCase(TestBase):
+
+    mydir = TestBase.compute_mydir(__file__)
+
+    def test_typedef(self):
+        target = self.dbg.GetDummyTarget()
+
+        # Declare a template class with a field that uses the template type
+        # parameter.
+        opts = lldb.SBExpressionOptions()
+        opts.SetTopLevel(True)
+        result = target.EvaluateExpression("template <typename T> struct X { T f; };", opts)
+        # FIXME: This fails with "Couldn't find $__lldb_expr() in the module"
+        # but it should succeed. The fact that this code has nothing to run
+        # shouldn't be an error.
+        # self.assertSuccess(result.GetError())
+
+        # Instantiate and produce a value with that template as the type.
+        # The field in the value will have a SubstTemplateTypeParam that
+        # should behave like a normal field.
+        result = target.EvaluateExpression("X<int> x; x.f = 123; x")
+        self.assertEqual(result.GetNumChildren(), 1)
+        self.assertEqual(result.GetChildAtIndex(0).GetTypeName(), "int")
+        self.assertEqual(result.GetChildAtIndex(0).GetValue(), "123")