From c8767ee9f9355a63bfeb8318df32bc39c5b0f3ad Mon Sep 17 00:00:00 2001
From: Jonathan Wakely <jwakely@redhat.com>
Date: Wed, 28 Apr 2021 18:14:05 +0100
Subject: [PATCH] libstdc++: Add testcase for std::pair as a structural type
 [PR 97930]

This PR was fixed by r12-221-ge1543e694dadf1ea70eb72325219bc0cdc914a35
(for compilers that support C++20 Concepts) so this adds the testcase.

libstdc++-v3/ChangeLog:

	PR libstdc++/97930
	* testsuite/20_util/pair/requirements/structural.cc: New test.
---
 .../testsuite/20_util/pair/requirements/structural.cc    | 9 +++++++++
 1 file changed, 9 insertions(+)
 create mode 100644 libstdc++-v3/testsuite/20_util/pair/requirements/structural.cc

diff --git a/libstdc++-v3/testsuite/20_util/pair/requirements/structural.cc b/libstdc++-v3/testsuite/20_util/pair/requirements/structural.cc
new file mode 100644
index 000000000000..d4df20197eef
--- /dev/null
+++ b/libstdc++-v3/testsuite/20_util/pair/requirements/structural.cc
@@ -0,0 +1,9 @@
+// { dg-options "-std=gnu++20" }
+// { dg-do compile { target c++20 } }
+
+#include <utility>
+
+// C++20 20.4.2 [pairs.pair]
+// pair<T, U> is a structural type (13.2) if T and U are both structural types.
+
+template<std::pair<int, int>> struct S; // PR libstdc++/97930
-- 
2.47.2