I am definitely using unsafe-vector-ref (and -set!) - a lot - with contracted vectors. So, that is at least part of my problem. And, the newer code uses many of the newer unsafe operations (like unsafe-fllog). This weekend I will change all of the vector references and see how everything runs with the pre-release version
Noel and Neil, were the unsafe-flround and unsafe-fllog problems you saw just with the newer nightly builds or with the released version of Racket? [I haven't had any problems with the released versions.] Doug On Wed, Oct 20, 2010 at 5:55 PM, Neil Toronto <neil.toro...@gmail.com>wrote: > Noel Welsh wrote: > >> On Wed, Oct 20, 2010 at 3:39 PM, Doug Williams >> <m.douglas.willi...@gmail.com> wrote: >> >>> I downloaded the pre-release version this morning - 10/20 (I believe it >>> was >>> a build from 10/16). The plot package and plot extensions in the science >>> collection all work as expected. But, I am getting different numeric >>> answers >>> for some of my science collection routines (for example, the gamma >>> function) >>> and some of my newer code (for example, FFT) either fails with an error >>> message or DrRacket just dies. All of this code uses unsafe operations >>> and >>> the problem may lie there somewhere. I'll try digging more deeply this >>> evening. >>> >> >> There is a crash inducing bug in some uses of flround (at least, last >> time I tried it). I haven't previously reported it as I haven't had >> the time to narrow down the situation that causes it. My DCT package >> on Github triggers it. >> > > I've had unsafe-fllog crash DrRacket a few times. The symptoms are always > consistent for me, but the bug fixers (Vincent and Matthew in this case) > haven't been able to duplicate them. It's very context-sensitive (e.g. it > depends whether printf and/or parameters are used nearby, and whether the > unsafe-fllog comes from TR's optimizer), so it was very hard to narrow down > in the first place. > > I'm thinking this is all the same thing, and JIT-related. (Except maybe > Doug's is caused by chaperones.) > > Neil T >
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