--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/clang/test/SemaTemplate/typo-dependent-name.cpp	Thu Feb 13 15:10:13 2020 +0900
@@ -0,0 +1,45 @@
+// RUN: %clang_cc1 -std=c++14 -fsyntax-only -verify %s
+
+using nullptr_t = decltype(nullptr);
+
+template<typename T>
+struct Base {
+  T inner;
+};
+
+int z;
+
+template<typename T>
+struct X : Base<T> {
+  static int z;
+
+  template<int U>
+  struct Inner {
+  };
+
+  bool f(T other) {
+    // A pair of comparisons; 'inner' is a dependent name so can't be assumed
+    // to be a template.
+    return this->inner < other > ::z;
+  }
+};
+
+void use_x(X<int> x) { x.f(0); }
+
+template<typename T>
+struct Y {
+  static int z;
+
+  template<int U>
+  struct Inner : Y { // expected-note {{declared here}}
+  };
+
+  bool f(T other) {
+    // We can determine that 'inner' does not exist at parse time, so can
+    // perform typo correction in this case.
+    return this->inner<other>::z; // expected-error {{no template named 'inner' in 'Y<T>'; did you mean 'Inner'?}}
+  }
+};
+
+struct Q { constexpr operator int() { return 0; } };
+void use_y(Y<Q> x) { x.f(Q()); }