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Date: Mon, 07 Apr 2014 18:25:00 -0000
From: Eli Zaretskii <eliz@gnu.org>
Subject: Re: [PATCH] Fix "PC register is not available" issue
In-reply-to: <5342DBBC.4090500@redhat.com>
To: Pedro Alves <palves@redhat.com>
Cc: brobecker@adacore.com, gdb-patches@sourceware.org
Reply-to: Eli Zaretskii <eliz@gnu.org>
Message-id: <83lhvh6lqi.fsf@gnu.org>
References: <83txawa9wk.fsf@gnu.org> <20140318161608.GD4282@adacore.com> <83pplja2h9.fsf@gnu.org> <20140318165413.GE4282@adacore.com> <834n2kztfw.fsf@gnu.org> <53358C37.9050907@redhat.com> <83a9cafcpz.fsf@gnu.org> <5335B619.6040605@redhat.com> <8361myfa6l.fsf@gnu.org> <83ioqucrkw.fsf@gnu.org> <5342DBBC.4090500@redhat.com>
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> Date: Mon, 07 Apr 2014 18:09:16 +0100
> From: Pedro Alves <palves@redhat.com>
> CC: brobecker@adacore.com, gdb-patches@sourceware.org
> 
> > Funnily enough, I cannot get GDBserver to emit similar warnings in the
> > same situation.  I don't understand the reasons for that, since the
> > code is very similar, and with a single exception, we do check the
> > return values of calls to GetThreadContext, SetThreadContext, and
> > SuspendThread in GDBserver.  But the fact remains that no warnings
> > about these threads are ever seen when debugging remotely.  I do see
> > the extra threads under GDBserver as well.
> 
> GDBserver's warnings are guarded by 'if (debug_threads)' (see OUTMSG2).

But the warnings I was talking about are output with OUTMSG, which
doesn't depend on debug_threads.  Here's an example:

  static void
  suspend_one_thread (struct inferior_list_entry *entry)
  {
    struct thread_info *thread = (struct thread_info *) entry;
    win32_thread_info *th = inferior_target_data (thread);

    if (!th->suspended)
      {
	if (SuspendThread (th->h) == (DWORD) -1)
	  {
	    DWORD err = GetLastError ();
	    OUTMSG (("warning: SuspendThread failed in suspend_one_thread, "
		     "(error %d): %s\n", (int) err, strwinerror (err)));

Did I miss something?