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From: Takashi Yano <>
Subject: [PATCH] Cygwin: pipe: Fix raw_write() for non-cygwin pipe with size zero.
Date: Thu, 11 Nov 2021 17:19:23 +0900	[thread overview]
Message-ID: <> (raw)

- Currently, raw_write() fails to handle size zero pipe which may
  be created by non-cygwin apps (e.g. Windows native ninja). This
  patch fixes the issue.

 winsup/cygwin/ | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/winsup/cygwin/ b/winsup/cygwin/
index 13731437e..9392a28c1 100644
--- a/winsup/cygwin/
+++ b/winsup/cygwin/
@@ -449,7 +449,7 @@ fhandler_pipe_fifo::raw_write (const void *ptr, size_t len)
       return -1;
-  if (len <= pipe_buf_size)
+  if (len <= pipe_buf_size || pipe_buf_size == 0)
     chunk = len;
   else if (is_nonblocking ())
     chunk = len = pipe_buf_size;

             reply	other threads:[~2021-11-11  8:20 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-11  8:19 Takashi Yano [this message]
2021-11-11  9:10 ` Corinna Vinschen

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