From b48a497cf0c575900f7a56c55752c8b4cecc6914 Mon Sep 17 00:00:00 2001
From: Takashi Yano <takashi.yano@nifty.ne.jp>
Date: Tue, 5 Sep 2023 16:59:51 +0900
Subject: [PATCH] Cygwin: dps: Fix a bug that read() could not return -1 on
 error.

---
 winsup/cygwin/fhandler/dsp.cc | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/winsup/cygwin/fhandler/dsp.cc b/winsup/cygwin/fhandler/dsp.cc
index d930328ce..dbe27905a 100644
--- a/winsup/cygwin/fhandler/dsp.cc
+++ b/winsup/cygwin/fhandler/dsp.cc
@@ -1188,7 +1188,9 @@ fhandler_dev_dsp::_read (void *ptr, size_t& len)
       return;
     }
 
-  audio_in_->read ((char *)ptr, (int&)len);
+  int res = len;
+  audio_in_->read ((char *)ptr, res);
+  len = (size_t)res;
 }
 
 void
-- 
2.43.5