[newlib-cygwin] Cygwin: console: Fix the condition to interrupt select() by SIGWINCH

[Corinna Vinschen]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=3a929f27f8c3c870eb61518c9c12bf1834f84558

commit 3a929f27f8c3c870eb61518c9c12bf1834f84558
Author: Takashi Yano <takashi.yano@nifty.ne.jp>
Date:   Thu Aug 15 14:03:00 2019 +0900

    Cygwin: console: Fix the condition to interrupt select() by SIGWINCH
    
    - Add code so that select() is not interrupted by SIGWINCH if it is
      ignored (SIG_IGN or SIG_DFL).

Diff:
---
 winsup/cygwin/select.cc | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/winsup/cygwin/select.cc b/winsup/cygwin/select.cc
index 9cf8928..4e9256b 100644
--- a/winsup/cygwin/select.cc
+++ b/winsup/cygwin/select.cc
@@ -1045,7 +1045,9 @@ peek_console (select_record *me, bool)
       else if (!PeekConsoleInputW (h, &irec, 1, &events_read) || !events_read)
 	break;
       fh->acquire_input_mutex (INFINITE);
-      if (fhandler_console::input_winch == fh->process_input_message ())
+      if (fhandler_console::input_winch == fh->process_input_message ()
+	  && global_sigs[SIGWINCH].sa_handler != SIG_IGN
+	  && global_sigs[SIGWINCH].sa_handler != SIG_DFL)
 	{
 	  set_sig_errno (EINTR);
 	  fh->release_input_mutex ();