From c9597ae2314b2e3f36139081f389b394203ea92c Mon Sep 17 00:00:00 2001
From: Christopher Faylor <me@cgf.cx>
Date: Wed, 14 Nov 2001 04:13:10 +0000
Subject: * syscalls.cc (_write): Allow zero length as per SUSv2.

---
 winsup/cygwin/syscalls.cc | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/winsup/cygwin/syscalls.cc b/winsup/cygwin/syscalls.cc
index 3b2104d..f181852 100644
--- a/winsup/cygwin/syscalls.cc
+++ b/winsup/cygwin/syscalls.cc
@@ -355,6 +355,9 @@ _read (int fd, void *ptr, size_t len)
 extern "C" ssize_t
 _write (int fd, const void *ptr, size_t len)
 {
+  if (len == 0)
+    return 0;
+
   if (__check_invalid_read_ptr_errno (ptr, len))
     return -1;
 
-- 
cgit v1.1