Cygwin: pty: Fix Ctrl-C behaviour in latest GDB.

- In the latest GDB (11.2-1), Ctrl-C behaviour is broken a bit for
  non-cygwin inferior. For example, Ctrl-C on GDB prompt is not sent
  to GDB but to the inferior. This patch fixes the issue.

diff --git a/winsup/cygwin/fhandler_termios.cc b/winsup/cygwin/fhandler_termios.cc
index 5cd44d7bffbd654a7729f56021b244d8683122d3..4eff5eab30ecd13d01e393b54784746199c8f47f 100644 (file)
--- a/winsup/cygwin/fhandler_termios.cc
+++ b/winsup/cygwin/fhandler_termios.cc
@@ -350,7 +350,8 @@ fhandler_termios::process_sigs (char c, tty* ttyp, fhandler_termios *fh)
                         cygwin apps started from non-cygwin shell. */
       if (c == '\003' && p && p->ctty == ttyp->ntty && p->pgid == pgid
          && ((p->process_state & PID_NOTCYGWIN)
-             || (p->exec_dwProcessId == p->dwProcessId)
+             || ((p->exec_dwProcessId == p->dwProcessId)
+                 && ttyp->pty_input_state_eq (tty::to_nat))
              || !(p->process_state & PID_CYGPARENT)))
        {
          /* Ctrl-C event will be sent only to the processes attaching
@@ -406,6 +407,7 @@ fhandler_termios::process_sigs (char c, tty* ttyp, fhandler_termios *fh)
            with_debugger = true; /* inferior is cygwin app */
          if (!(p->process_state & PID_NOTCYGWIN)
              && (p->exec_dwProcessId == p->dwProcessId) /* Check marker */
+             && ttyp->pty_input_state_eq (tty::to_nat)
              && p->pid == pgid)
            with_debugger_nat = true; /* inferior is non-cygwin app */
        }