1 files changed, 11 insertions, 0 deletions
diff --git a/clang/test/SemaTemplate/GH161657.cpp b/clang/test/SemaTemplate/GH161657.cpp
new file mode 100644
index 0000000..5ad4dde
--- /dev/null
+++ b/clang/test/SemaTemplate/GH161657.cpp
@@ -0,0 +1,11 @@
+// RUN: %clang_cc1 -triple=x86_64 -fsyntax-only -std=c++20 -ffp-exception-behavior=strict -verify %s
+// expected-no-diagnostics
+
+template <class T> struct S {
+  template <class U> using type1 = decltype([] { return U{}; });
+};
+
+void foo() {
+  using T1 = S<int>::type1<int>;
+  int x = T1()();
+}