https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=7ad80b3c233c96218985e603cfcb8051e1771505
commit 7ad80b3c233c96218985e603cfcb8051e1771505 Author: Ken Brown <kbr...@cornell.edu> Date: Thu May 9 12:04:14 2019 -0400 Cygwin: FIFO: set client handler flags more accurately Reflect the fact that client handlers are only used for reading and that, after connection, they are always nonblocking. Diff: --- winsup/cygwin/fhandler_fifo.cc | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/winsup/cygwin/fhandler_fifo.cc b/winsup/cygwin/fhandler_fifo.cc index 0d4a8b8..1b1b3c7 100644 --- a/winsup/cygwin/fhandler_fifo.cc +++ b/winsup/cygwin/fhandler_fifo.cc @@ -246,7 +246,8 @@ fhandler_fifo::add_client_handler () else { fh->set_handle (ph); - fh->set_flags (get_flags ()); + fh->set_flags ((openflags & ~O_ACCMODE) | O_RDONLY); + fh->set_nonblocking (false); ret = 0; fc.fh = fh; fc_handler[nhandlers++] = fc; @@ -298,6 +299,7 @@ fhandler_fifo::record_connection (fifo_client_handler& fc) fifo_client_lock (); fc.state = fc_connected; nconnected++; + fc.fh->set_nonblocking (true); set_pipe_non_blocking (fc.fh->get_handle (), true); fifo_client_unlock (); HANDLE evt = InterlockedExchangePointer (&fc.connect_evt, NULL);