On Tue, 17 Jan 2012 23:03:29 +0100 Robin Gareus <robin@xxxxxxxxxx> wrote: > On 01/17/2012 10:27 PM, Renato wrote: > > Hi, I'm getting a consistent crash in ams I'd like to report, but > > for it to be useful I think I have to provide a backtrace, right? > > > > How do I compile ams to get that? I don't see any "debug" option or > > similar in ./configure --help... > > > > Hi Renato, > > You need to compile the program with gcc's '-g' option in order to > produce useful backtraces. Some software has this flag turned on by > default (check the output of `make`) but duplicating it does not hurt. > > With most autotools' configured projects you can that with environment > variables: > CFLAGS=-g CXXFLAGS=-g ./configure > > (Custom configure scripts often accept '--with-cflags=-g' or similar > options - usually documented in ./INSTALL) > > > Next run the program under the GNU debugger: > > gdb --args ./path/to/binary [options] > ## inside gdb: > run > ## wait until it crashes, then type > thread apply all bt > ## and send the output upstream. > > > gdb slows things down. If the application-under-test is a jack-client: > It may cause jack-timeouts and eventually jackd may kick out the > client (You should not be running jackd with realtime privileges at > the same time as jack-client under gdb). An Alternative to running > the program inside the debugger is to create core-dump of the crash, > and later analyze the dump with gdb: > > ulimit -c unlimited > ./my/bad/program > ## crash > ls -l core.XXXXX > gdb ./my/bad/program core.XXXXX > thread apply all bt > > > HTH, > robin thanks Robin, hopefully tomorrow I'll have some time to try these things. BTW the crash has to do with creating feedback lines in ams... I even tried inserting a delay in the feedback line (suggestion I found in a youtube comment so that says it all ;) but it seemed reasonable) but still this sort of thing seems to make ams extremely unstable. best wishes, renato _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
