1 files changed, 19 insertions, 0 deletions
diff --git a/clang/test/Parser/cxx2a-abbreviated-templates.cpp b/clang/test/Parser/cxx2a-abbreviated-templates.cpp
new file mode 100644
index 00000000000..e2b3803c807
--- /dev/null
+++ b/clang/test/Parser/cxx2a-abbreviated-templates.cpp
@@ -0,0 +1,19 @@
+// RUN: %clang_cc1 -std=c++2a -x c++ %s -verify
+// expected-no-diagnostics
+
+template<typename T, typename U=void>
+concept C = true;
+
+namespace ns {
+  template<typename T, typename U=void>
+  concept D = true;
+}
+
+void foo(C auto a,
+         C<int> auto b,
+         ns::D auto c,
+         ns::D<int> auto d,
+         const C auto e,
+         const C<int> auto f,
+         const ns::D auto g,
+         const ns::D<int> auto h);
+\ No newline at end of file