mintty crashes on Windows 7

[Takashi Yano]

On Wed, 4 May 2022 16:27:43 +0300
Orgad Shaneh  wrote:
> On Wed, May 4, 2022 at 2:16 PM Takashi Yano <takashi.yano@nifty.ne.jp> wrote:
> >
> > > Reduced the revert to this:
> > > @@ -979,16 +979,10 @@ fhandler_pty_slave::open (int flags, mode_t)
> > >         code does not work as expected because it calls Win32
> > >         API directly rather than cygwin read()/write(). Due to
> > >         this behaviour, protection based on attach_mutex does
> > >         not take effect. */
> > >      get_ttyp ()->need_invisible_console = true;
> > > -  else if (_major (myself->ctty) != DEV_CONS_MAJOR
> > > -    && (!get_ttyp ()->invisible_console_pid
> > > -        || !pinfo (get_ttyp ()->invisible_console_pid)))
> > > -    /* Create a new invisible console for each pty to isolate
> > > -       CTRL_C_EVENTs between ptys. */
> > > -    get_ttyp ()->need_invisible_console = true;
> > >    else
> > >      {
> > >        acquire_attach_mutex (mutex_timeout);
> > >        fhandler_console::need_invisible ();
> > >        release_attach_mutex ();
> >
> > A few things about this.
> >
> > 1) bash exits with exit code 127 for 'mintty bash'
> > 2) 'mintty bash' does not work, but 'mintty ash' and 'mintty tcsh' work.
> 
> Right. mintty dash also works.
> 
> Notice that I did *not* set enable_pcon (not supported on Win7 anyway).

Even without that commit (and also with msys2 3.3.4 release),
something wrong with msys2 in Windows 7.

If you run script command (/usr/bin/script), bash crashes in
similar way. typescript file generated by script command is
as follows.

Script started on 2022-05-05 10:12:28+09:00 [TERM="cygwin" TTY="/dev/cons0" COLUMNS="80" LINES="25"]

Script done on 2022-05-05 10:12:29+09:00 [COMMAND_EXIT_CODE="127"]

bash also exited with exit code 127.

-- 
Takashi Yano <takashi.yano@nifty.ne.jp>