[plt-dev] DrScheme definitions crash in pre-release

I tried to follow the steps with collects/drscheme/private/rep.ss and
couldn't make it fail. Specifically, I hit return on the second line
(making the buffer modified) and then check syntax; I waited until it
was in "coloring" mode (according to the status line) and then hit
cmd-s (for save) and nothing bad happened. I only tried it about 4
times, tho, so maybe I just didn't try enough?

Or possibly because I'm using a mac there is something about the way
event handling works on the mac that makes me miss the bug (because
the save button does not go away until check syntax completes).

Robby

On Fri, May 22, 2009 at 3:23 PM, David Van Horn <dvanhorn at ccs.neu.edu> wrote:
> I can consistently put DrScheme in a bad state by the following:
>
> 1) Open a fairly large file (so syntax checking takes time)
> 2) Make a change
> 3) click Check Syntax
> 4) click Save -- before checking is complete.
>
> It seems as soon as syntax checking completes, an internal error is
> signalled.  The error varies, but it always occurs.  Here are a couple:
>
> 1)
>
> sequence-contract-violation: negative: method delete cannot be called,
> except in states (unlocked), args 0 360
>
>  === context ===
> /Applications/PLT Scheme Full
> v4.1.900/collects/drscheme/private/unit.ss:529:10: after-save-file method in
> ...heme/private/unit.ss:454:8
> /Applications/PLT Scheme Full
> v4.1.900/collects/drscheme/private/unit.ss:3884:29
> /Applications/PLT Scheme Full
> v4.1.900/collects/scheme/private/more-scheme.ss:155:2:
> call-with-break-parameterization
> /Applications/PLT Scheme Full
> v4.1.900/collects/scheme/private/more-scheme.ss:271:2:
> call-with-exception-handler
>
> 2)
>
> hash-ref: expects type <hash> as 1st argument, given: #f; other arguments
> were: #(struct:object:...engine/test-tool.scm:30:6 ...)
> #<procedure:...heme/syncheck.ss:461:35>
>
>  === context ===
> /Applications/PLT Scheme Full v4.1.900/collects/drscheme/syncheck.ss:414:12:
> syncheck:add-menu method in ...drscheme/syncheck.ss:221:10
> /Applications/PLT Scheme Full v4.1.900/collects/scheme/private/map.ss:44:11:
> for-each
> /Applications/PLT Scheme Full
> v4.1.900/collects/drscheme/syncheck.ss:1671:22: at-phase
> /Applications/PLT Scheme Full v4.1.900/collects/scheme/private/map.ss:44:11:
> for-each
> /Applications/PLT Scheme Full v4.1.900/collects/scheme/private/map.ss:44:11:
> for-each
> /Applications/PLT Scheme Full v4.1.900/collects/drscheme/syncheck.ss:1489:4:
> annotate-basic
> /Applications/PLT Scheme Full
> v4.1.900/collects/drscheme/syncheck.ss:1413:14: expanded-expression
> /Applications/PLT Scheme Full v4.1.900/collects/drscheme/syncheck.ss:1247:38
> /Applications/PLT Scheme Full v4.1.900/collects/drscheme/syncheck.ss:1244:35
>
> After this, the definitions window is broken.  I cannot reposition the
> cursor, type text, etc.  I can click Save but it doesn't go away.  Run and
> the interactions window work fine.
>
> This is on 4.1.900-svn21may2009 [3m], Mac OSX, ISL/lambda.
>
> Should I be submitting bug reports, or emailing this list since this
> concerns the release candidate?
>
> David
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