From d64343249c51a106649249de05c8d1c519b542ce Mon Sep 17 00:00:00 2001
From: KWSys Upstream <kwrobot@kitware.com>
Date: Wed, 2 Apr 2025 08:28:53 -0400
Subject: KWSys 2025-04-02 (284a7281)

Code extracted from:

    https://gitlab.kitware.com/utils/kwsys.git

at commit 284a7281f1d439bf97816dcdcb19c6fe5f146d85 (master).

Upstream Shortlog
-----------------

Brad King (1):
      d68a5d3f SystemTools: Comment why ChangeDirectory does not use UNC for long paths
---
 SystemTools.cxx | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/SystemTools.cxx b/SystemTools.cxx
index ef16256..463ff71 100644
--- a/SystemTools.cxx
+++ b/SystemTools.cxx
@@ -329,6 +329,9 @@ inline char const* Getcwd(char* buf, unsigned int len)
 }
 inline int Chdir(std::string const& dir)
 {
+  // We cannot use ToWindowsExtendedPath here because that causes a
+  // UNC path to be recorded as the process working directory, and
+  // can break child processes.
   return _wchdir(KWSYS_NAMESPACE::Encoding::ToWide(dir).c_str());
 }
 inline void Realpath(std::string const& path, std::string& resolved_path,
-- 
cgit v0.12