[llvm] [LIT][Cygwin] Mark `ulimit -f` unsupported for Cygwin (PR #165849)

[Tomohiro Kashiwada via llvm-commits]

https://github.com/kikairoya created https://github.com/llvm/llvm-project/pull/165849

Cygwin doesn't support `ulimit -f` because Windows doesn't provide such functionality.

>From f309f3c52db49ca6d788855c823d69dbaae4ac00 Mon Sep 17 00:00:00 2001
From: kikairoya <kikairoya at gmail.com>
Date: Fri, 31 Oct 2025 18:46:48 +0900
Subject: [PATCH] [LIT][Cygwin] Mark `ulimit -f` unsupported for Cygwin

Cygwin doesn't support `ulimit -f` because Windows doesn't provide such functionality.
---
 llvm/utils/lit/tests/shtest-ulimit-nondarwin.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/llvm/utils/lit/tests/shtest-ulimit-nondarwin.py b/llvm/utils/lit/tests/shtest-ulimit-nondarwin.py
index 286fd3d7e173e..d81cde0159792 100644
--- a/llvm/utils/lit/tests/shtest-ulimit-nondarwin.py
+++ b/llvm/utils/lit/tests/shtest-ulimit-nondarwin.py
@@ -2,7 +2,7 @@
 
 # ulimit does not work on non-POSIX platforms.
 # These tests are specific to options that Darwin does not support.
-# UNSUPPORTED: system-windows, system-darwin, system-aix, system-solaris
+# UNSUPPORTED: system-windows, system-cygwin, system-darwin, system-aix, system-solaris
 
 # RUN: not %{lit} -a -v %{inputs}/shtest-ulimit-nondarwin | FileCheck %s