[Discuss-gnuradio] Re: debugging

[Eric Blossom]

On Fri, Oct 28, 2005 at 12:15:53PM -0400, Lee Patton wrote:
> Eric -
> 
> I've attached the gdb back trace you asked for.

Thanks!  I really appreciate it when others jump in.

> (gdb) c
> Continuing.
> [New Thread -179336272 (LWP 11020)]
> [New Thread -190067792 (LWP 11021)]
> [Thread -190067792 (LWP 11021) exited]
> 
> Program received signal SIGABRT, Aborted.
> [Switching to Thread -151095616 (LWP 11015)]
> 0x004717a2 in _dl_sysinfo_int80 () from /lib/ld-linux.so.2
> (gdb) bt
> #0  0x004717a2 in _dl_sysinfo_int80 () from /lib/ld-linux.so.2
> #1  0x004b1955 in raise () from /lib/tls/libc.so.6
> #2  0x004b3319 in abort () from /lib/tls/libc.so.6
> #3  0x004eaa1b in malloc_printerr () from /lib/tls/libc.so.6
> #4  0x004eb4ba in free () from /lib/tls/libc.so.6
> #5  0x06a99445 in operator delete () from /usr/lib/libstdc++.so.6
> #6  0x06a99491 in operator delete[] () from /usr/lib/libstdc++.so.6
> #7  0xf68f9f80 in ~gr_oscope_guts (this=0xa0d0080) at gr_oscope_guts.cc:87
> #8  0xf68fb877 in ~gr_oscope_sink_x (this=0xa0a4b18) at gr_oscope_sink_x.cc:42
> #9  0xf68fab4f in ~gr_oscope_sink_f (this=0xa0a4b18) at gr_oscope_sink_f.cc:60
> #10 0xf6b1a1e1 in boost::detail::sp_counted_base_impl<gr_oscope_sink_f*, 
> boost::checked_deleter<gr_oscope_sink_f> >::dispose (this=0x0)
>     at checked_delete.hpp:36
> #11 0xf6ac1b95 in _wrap_delete_gr_oscope_sink_f_sptr (args=0xf55875ec) at 
> shared_count.hpp:148


Fixed in CVS.  Problem was that ~gr_oscope_sink_f was deleting an
instance variable that belonged to the superclass.  Hence the double free.

Thanks,
Eric