1 files changed, 20 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/concepts/variadic6.C b/gcc/testsuite/g++.dg/concepts/variadic6.C
new file mode 100644
index 00000000000..0b386b0cd6d
--- /dev/null
+++ b/gcc/testsuite/g++.dg/concepts/variadic6.C
@@ -0,0 +1,20 @@
+// PR c++/105268
+// { dg-do compile { target concepts } }
+
+template<typename> concept C_one = true;
+template<typename...> concept C_many = true;
+
+template<bool B> struct S { };
+
+template<typename T = S<C_one<int>>> void f();
+template<typename T = S<C_many<int>>> void g();
+
+void
+fn (auto a = S<C_one<int>>{})
+{
+}
+
+void
+fn2 (auto a = S<C_many<int>>{})
+{
+}