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RE: [PATCH] btrace: initiate teardown when closing record btrace target


> -----Original Message-----
> From: gdb-patches-owner@sourceware.org [mailto:gdb-patches-
> owner@sourceware.org] On Behalf Of Jan Kratochvil
> Sent: Tuesday, January 21, 2014 3:17 PM


> On Mon, 20 Jan 2014 10:00:21 +0100, Markus Metzger wrote:
> > In the remote case, the remote target that provides to_teardown_btrace
> > to free the GDB side resources has already been unpushed when threads
> > are destroyed.  This results in a complaint "You can't do this ..." and
> > in a few bytes of memory leaked for each thread.
> 
> Could you provide an example when this error happens?
> 
> I can reproduce it with plain gdb+gdbserver but not with btrace functionality.

It happens with a simple hello-world.

$ gdbserver :2001 hello
$ gdb hello
(gdb) target remote :2001
...
(gdb) rec b
(gdb) kill
Kill the program being debugged? (y or n) y
You can't do that when your target is 'exec'.
(gdb)

When I set a breakpoint at tcomplain and go up, I'm in taret_teardown_btrace.

Regards,
Markus.

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