Tested x86_64-linux. Pushed to trunk.
-- >8 --
This copies the better tests from gcc-12 to trunk.
libstdc++-v3/ChangeLog:
PR libstdc++/106201
* testsuite/27_io/filesystem/iterators/106201.cc: Improve test.
* testsuite/experimental/filesystem/iterators/106201.cc: New test.
---
.../testsuite/27_io/filesystem/iterators/106201.cc | 8 +++++---
.../experimental/filesystem/iterators/106201.cc | 14 ++++++++++++++
2 files changed, 19 insertions(+), 3 deletions(-)
create mode 100644
libstdc++-v3/testsuite/experimental/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
index 4a64e675816..c5fefd9ac3f 100644
--- a/libstdc++-v3/testsuite/27_io/filesystem/iterators/106201.cc
+++ b/libstdc++-v3/testsuite/27_io/filesystem/iterators/106201.cc
@@ -5,8 +5,10 @@
// PR libstdc++/106201 constraint recursion in path(Source const&) constructor.
#include <filesystem>
-#include <ranges>
-using I = std::counted_iterator<std::filesystem::directory_iterator>;
+#include <iterator>
+#include <concepts>
+namespace fs = std::filesystem;
+using I = std::counted_iterator<fs::directory_iterator>;
static_assert( std::swappable<I> );
-using R = std::counted_iterator<std::filesystem::recursive_directory_iterator>;
+using R = std::counted_iterator<fs::recursive_directory_iterator>;
static_assert( std::swappable<R> );
diff --git a/libstdc++-v3/testsuite/experimental/filesystem/iterators/106201.cc
b/libstdc++-v3/testsuite/experimental/filesystem/iterators/106201.cc
new file mode 100644
index 00000000000..017b72ef5f6
--- /dev/null
+++ b/libstdc++-v3/testsuite/experimental/filesystem/iterators/106201.cc
@@ -0,0 +1,14 @@
+// { 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 <experimental/filesystem>
+#include <iterator>
+#include <concepts>
+namespace fs = std::experimental::filesystem;
+using I = std::counted_iterator<fs::directory_iterator>;
+static_assert( std::swappable<I> );
+using R = std::counted_iterator<fs::recursive_directory_iterator>;
+static_assert( std::swappable<R> );
--
2.38.1
