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Cygwin: pipe: Fix raw_write() for non-cygwin pipe with size zero.

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- 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.

Addresses:
  https://cygwin.com/pipermail/cygwin/2021-November/249844.html
This commit is contained in:
Takashi Yano 2021-11-11 12:30:24 +09:00
parent 24491c1251
commit 576ace1f2f
1 changed files with 1 additions and 1 deletions
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2
winsup/cygwin/fhandler_pipe.cc
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@ -449,7 +449,7 @@ fhandler_pipe_fifo::raw_write (const void *ptr, size_t len)
return -1; return -1;
} }
if (len <= pipe_buf_size) if (len <= pipe_buf_size || pipe_buf_size == 0)
chunk = len; chunk = len;
else if (is_nonblocking ()) else if (is_nonblocking ())
chunk = len = pipe_buf_size; chunk = len = pipe_buf_size;