[gcc r17-1915] libstdc++: Test fs::status and fs::symlink_status with dir symlink

[Jonathan Wakely]

https://gcc.gnu.org/g:4c05f6e10358f379a6da28151b832509f0a3f485

commit r17-1915-g4c05f6e10358f379a6da28151b832509f0a3f485
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Fri Jun 26 12:30:57 2026 +0100

    libstdc++: Test fs::status and fs::symlink_status with dir symlink
    
    I realized that we didn't test that filesystem::status and
    filesystem::symlink_status work correctly for directory symlinks.
    
    For POSIX there's no reason it wouldn't Just Work, but for Windows
    symlinks to directories and symlinks to regular files require different
    handling. These tests will ensure that we get it right when Windows
    symlinks are supported.
    
    libstdc++-v3/ChangeLog:
    
            * testsuite/27_io/filesystem/operations/status.cc: Check
            handling of directory symlink.
            * testsuite/27_io/filesystem/operations/symlink_status.cc:
            Likewise.

Diff:
---
 .../27_io/filesystem/operations/status.cc          | 22 ++++++++++++++++++++++
 .../27_io/filesystem/operations/symlink_status.cc  | 22 ++++++++++++++++++++++
 2 files changed, 44 insertions(+)

diff --git a/libstdc++-v3/testsuite/27_io/filesystem/operations/status.cc b/libstdc++-v3/testsuite/27_io/filesystem/operations/status.cc
index f4321414e070..51737b19b2d4 100644
--- a/libstdc++-v3/testsuite/27_io/filesystem/operations/status.cc
+++ b/libstdc++-v3/testsuite/27_io/filesystem/operations/status.cc
@@ -99,6 +99,27 @@ test04()
   VERIFY( is_directory(st) );
 }
 
+void
+test05()
+{
+#ifndef NO_SYMLINKS
+  struct scoped_dir
+  {
+    scoped_dir() { fs::create_directory(d); }
+    ~scoped_dir() { remove_all(d); }
+    fs::path d = __gnu_test::nonexistent_path();
+    fs::path operator/(const char* p) const { return d/p; }
+  };
+  const scoped_dir d;
+  fs::create_directory(d/"dir");
+  const fs::path link = d/"link";
+  fs::create_directory_symlink("dir", link);
+  auto st = fs::status(link);
+  VERIFY( is_directory(st) );
+  VERIFY( ! is_symlink(st) );
+#endif
+}
+
 int
 main()
 {
@@ -106,4 +127,5 @@ main()
   test02();
   test03();
   test04();
+  test05();
 }
diff --git a/libstdc++-v3/testsuite/27_io/filesystem/operations/symlink_status.cc b/libstdc++-v3/testsuite/27_io/filesystem/operations/symlink_status.cc
index 06a5467d3e80..c542ac46cdc4 100644
--- a/libstdc++-v3/testsuite/27_io/filesystem/operations/symlink_status.cc
+++ b/libstdc++-v3/testsuite/27_io/filesystem/operations/symlink_status.cc
@@ -125,6 +125,27 @@ test04()
   VERIFY( is_directory(st) );
 }
 
+void
+test05()
+{
+#ifndef NO_SYMLINKS
+  struct scoped_dir
+  {
+    scoped_dir() { fs::create_directory(d); }
+    ~scoped_dir() { remove_all(d); }
+    fs::path d = __gnu_test::nonexistent_path();
+    fs::path operator/(const char* p) const { return d/p; }
+  };
+  const scoped_dir d;
+  fs::create_directory(d/"dir");
+  const fs::path link = d/"link";
+  fs::create_directory_symlink("dir", link);
+  auto st = fs::symlink_status(link);
+  VERIFY( ! is_directory(st) );
+  VERIFY( is_symlink(st) );
+#endif
+}
+
 int
 main()
 {
@@ -132,4 +153,5 @@ main()
   test02();
   test03();
   test04();
+  test05();
 }