* Crossposted in OS2.PROG.GER
* Crossposted in OS2NET.PROGRAMMIERUNG.GER
* Crossposted in OS2PROG

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From: Eberhard Mattes 


Dave Ulrick writes:

> I'm developing an OS/2 text-mode program with emx 0.9b
> [...] and I'm attempting to use the tcsetattr
> function to switch the keyboard into a get one key at a time with no
> echo mode. [...]
> *However*, when I run my program in single-step mode inside gdb, I
> frequently see error messages which indicate that gdb was unable to set
> breakpoint 0.  The output of such gdb commands such as "info stack" or
> "frame" shows that gdb has lost track of my program's stack frames.

tcsetattr() starts a new thread.  emx.dll 0.9b and GDB of emx 0.9b
cannot be used to debug multithread programs.  Upgrade to emx 0.9c.

> (Curiously, the gdb "info terminal" command shows no change in the
> termios fields after I invoke tcsetattr, although the keyboard's
> behavior *definitely* changes (as desired) after the call.)

In my port of GDB, `info terminal' applies to GDB's terminal, not to
the debuggee's terminal.

Eberhard Mattes 
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