[racket-dev] Can't use 5.1.2 and later

From: Doug Williams (m.douglas.williams at gmail.com)
Date: Sun Aug 28 22:21:26 EDT 2011

You might try running science-test.rkt multiple times and see if it fails.
It's the simulation collection where I see the problem mostly. It uses the
differential equation solver from the science collection, which is the only
place I know of that uses boxes, but there may be others. I was using
Windows 7 64-bit today when I tried it. I'll see if science-test works for

When it does fail for me now, it is consistently with a seg fault in gc.

I'll keep checking nightly builds on my home machine in the evenings.

I'll look into the unsafe-fl* error.


On Sunday, August 28, 2011, Matthew Flatt <mflatt at cs.utah.edu> wrote:
> At Sun, 28 Aug 2011 13:18:36 -0600, Doug Williams wrote:
>> I reported a problem a few weeks back that keeps me from using 5.1.2 (and
>> now 5.1.3). Matthew believes it is due to an optimizer bug with boxes.
>> Fortunately, 5.1.1 works, but we're stuck there. I tried the latest
>> build this morning and the error is still there.
> I thought I had fixed that one with push d185c2a0df45 in the git repo.
> The line
>  (require (planet "williams/science/examples/science-test.ss"))
> works for me (Mac OS X, 32-bit Windows, 64-bit Windows). Am I trying
> the right example?
>> Anyway, the real reason for this e-mail is that the latest nightly build
>> (which was plt- gave me another problem.
When I
>> downloaded the science collection from PLaneT using the latest nightly
>> build, it gave me errors about expecting a module for some files. There
>> indeed some rkt files that are included - using include - that are not
>> modules. But, they are in the compile-omit-files in the info.rkt file. Is
>> this being deprecated in some way?
> I see that problem (i.e., errors when I use the `require' line above),
> and it's related to recent changes for `raco link'. I've pushed a
> repair in time for tonight's build.
> BTW, the bytecode optimizer notices that `unsafe-fl*' is applied to
> three arguments in "statistics.rkt". Looks like it's on line 713.
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