Re: [Sc-devel] n_free bug

[Sciss <contact@xxxxxxxx>]

hmm, maybe you are right regarding OffsetOut. I can spot the  
difference here (see how it crashes also with n_free):

(
s.waitForBoot({ fork {
	SynthDef(\test, {
		var z;
		z = SinOsc.ar;
		Offset.ar( 0, z );	// no crash with Out instead
	}).send( s );
	s.sync;
	s.sendBundle( nil,
		[ "/g_new", 1007, 0, 0 ],
		[ "/s_new", "test", 1011, 1, 1007 ],
		[ "/n_run", 1011, 0 ]);
	s.sendMsg( "/n_free", 1007 );
}});
)

... and also i realized i was still using OffsetOut in Eisenkraut  
(since a while ago i thought that it had any precision advantage over  
Out, but i never really understood what OffsetOut was doing and why  
it would be more sample accurate than Out when not using bundle  
times). So i replaced all OffsetOut with Out in Eisenkraut, and some  
mysterious scsynth crash bugs disappeared straight away...

ciao, -sciss-



Am 04.12.2007 um 03:53 schrieb Josh Parmenter:

> I noticed Sciss's n_free bug in the bug tracker, and noticed in the  
> console output that OffsetOut's Dtor was involved. I tried a couple  
> of test cases with Dtor UGens, and they all crashed, but the  
> following example didn't:
>
> s.boot;
>
> SynthDef(\test, {
> 	Out.ar(0, SinOsc.ar(440, 0, 0.1))
> 	}).load(s)
> // now either of these:
>
> (
> s.sendBundle( nil,
> [ "/g_new", 1007, 0, 0 ],
> [ "/s_new", "test", 1011, 1, 1007 ],
> [ "/n_run", 1011, 0 ] // REQUIRED TO PRODUCE THE CRASH
> );
> s.sendMsg( "/g_deepFree", 1007 ); // Doesn't BOOOM!
> )
>
> Perhaps the bug has to do with the deepFree doing something wrong  
> with Dtors? I don't really know where to look for this... I'll poke  
> around some, but in case this rings a bell for anyone, I thought I  
> would post it!
>
> Best,
> Josh
> ******************************************
> /* Joshua D. Parmenter
> http://www.realizedsound.net/josh/
>
> “Every composer – at all times and in all cases – gives his own  
> interpretation of how modern society is structured: whether  
> actively or passively, consciously or unconsciously, he makes  
> choices in this regard. He may be conservative or he may subject  
> himself to continual renewal; or he may strive for a revolutionary,  
> historical or social palingenesis." - Luigi Nono
> */
>
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