[pushed] c++: add fixed test [PR109095]

[Marek Polacek]

Tested x86_64-pc-linux-gnu, applying to trunk.

-- >8 --
Fixed by r13-6693.

        PR c++/109095

gcc/testsuite/ChangeLog:

        * g++.dg/cpp2a/nontype-class66.C: New test.
---
 gcc/testsuite/g++.dg/cpp2a/nontype-class66.C | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 gcc/testsuite/g++.dg/cpp2a/nontype-class66.C

diff --git a/gcc/testsuite/g++.dg/cpp2a/nontype-class66.C 
b/gcc/testsuite/g++.dg/cpp2a/nontype-class66.C
new file mode 100644
index 00000000000..385b290521f
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp2a/nontype-class66.C
@@ -0,0 +1,19 @@
+// PR c++/109095
+// { dg-do compile { target c++20 } }
+
+template< typename T >
+struct bar
+{};
+
+template< int X >
+struct baz
+{};
+
+template< auto N, template< auto N2 > typename TT >
+struct foo;
+
+template< typename T, bar< T > B, template< T N2 > typename TT >
+struct foo< B, TT >
+{};
+
+foo< bar< int >{}, baz > x;

base-commit: f0ab3de6ec0e3540f2e57f3f5628005f0a4e3fa5
-- 
2.46.0