Cygwin: pty: Fix Ctrl-C handling for non-cygwin apps in background.

- With pseudo console enabled, if the non-cygwin app is started in
  the background and put it into the foreground, the process cannot
  be stopped by Ctrl-C. This patch fixes the issue.

diff --git a/winsup/cygwin/fhandler_tty.cc b/winsup/cygwin/fhandler_tty.cc
index 4f135839df250b728fe9a7bc3a62ef7543d6d132..37e27f34a83fd131ab40e8eb1ed6c3c533cedb78 100644 (file)
--- a/winsup/cygwin/fhandler_tty.cc
+++ b/winsup/cygwin/fhandler_tty.cc
@@ -2249,9 +2249,12 @@ fhandler_pty_master::write (const void *ptr, size_t len)
                          &mbp);
        }
 
-      if ((ti.c_lflag & ISIG) && !(ti.c_lflag & NOFLSH)
-         && memchr (buf, '\003', nlen))
-       get_ttyp ()->discard_input = true;
+      if ((ti.c_lflag & ISIG) && memchr (buf, '\003', nlen))
+       {
+         get_ttyp ()->kill_pgrp (SIGINT);
+         if (!(ti.c_lflag & NOFLSH))
+           get_ttyp ()->discard_input = true;
+       }
       DWORD n;
       WriteFile (to_slave_nat, buf, nlen, &n, NULL);
       ReleaseMutex (input_mutex);