From 6b859736bb1e707778627b2e58ef6088e475a54c Mon Sep 17 00:00:00 2001
From: Jonathan Wakely <jwakely@redhat.com>
Date: Tue, 22 Nov 2022 12:17:27 +0000
Subject: [PATCH] libstdc++: Add testcase for fs::path constraint recursion
[PR106201]
libstdc++-v3/ChangeLog:
PR libstdc++/106201
* testsuite/27_io/filesystem/iterators/106201.cc: New test.
---
.../testsuite/27_io/filesystem/iterators/106201.cc | 12 ++++++++++++
1 file changed, 12 insertions(+)
create mode 100644 libstdc++-v3/testsuite/27_io/filesystem/iterators/106201.cc
diff --git a/libstdc++-v3/testsuite/27_io/filesystem/iterators/106201.cc b/libstdc++-v3/testsuite/27_io/filesystem/iterators/106201.cc
new file mode 100644
index 000000000000..4a64e675816f
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/filesystem/iterators/106201.cc
@@ -0,0 +1,12 @@
+// { dg-options "-std=gnu++20" }
+// { dg-do compile { target c++20 } }
+// { dg-require-filesystem-ts "" }
+
+// PR libstdc++/106201 constraint recursion in path(Source const&) constructor.
+
+#include <filesystem>
+#include <ranges>
+using I = std::counted_iterator<std::filesystem::directory_iterator>;
+static_assert( std::swappable<I> );
+using R = std::counted_iterator<std::filesystem::recursive_directory_iterator>;
+static_assert( std::swappable<R> );
--
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