On Thu, Aug 30, 2012 at 8:47 AM, Sam Tobin-Hochstadt wrote:
> I've been unable to replicate the error from revision 6039e35, which
> is right before you fixed the bugs in `delay/*`.
>
> Jay, is there something DrDr is doing when it runs the command that I
> should change to try to replicate this?
Hello Racketeers! Shriram and I are running a course this fall with a
significant online component
(http://www.cs.brown.edu/courses/cs173/2012/OnLine/). We'll start
distributing course software to well over a thousand students next
Friday.
We're (of course) writing the course software in Racket.
On Wed, Aug 29, 2012 at 1:14 PM, Robby Findler
wrote:
> On Wed, Aug 29, 2012 at 5:26 AM, Antonio Leitao wrote:
>> On Tue, Aug 28, 2012 at 7:17 PM, Robby Findler
>> wrote:
>>> Well, here's an example of it working. I don't know what to suggest
>>> but to ask if you could make a small program that
On 2012-08-30 10:09:30 -0400, Matthias Felleisen wrote:
> We implemented amb before abort and abort handlers were around.
> Does this library use them for convenience or does it add some
> functionality to amb? -- Matthias
It's a fancy `amb` that has nice features like `for/amb` and `in-amb`.
Che
On 2012-08-30 06:53:58 -0600, Matthew Flatt wrote:
> I think this combination of replacing both `call/cc' and `dynamic-wind'
> would be equivalent to a smaller change to the semantics of `call/cc',
> which is that it behaves as it does now if there's a shared
> `dynamic-wind' between the source and
On Wed, Aug 29, 2012 at 11:23 AM, Sam Tobin-Hochstadt wrote:
> On Wed, Aug 29, 2012 at 11:17 AM, Matthew Flatt wrote:
>> At Wed, 29 Aug 2012 10:34:02 -0400, Sam Tobin-Hochstadt wrote:
>>> On Wed, Aug 29, 2012 at 9:20 AM, Matthew Flatt wrote:
>>> > At Mon, 27 Aug 2012 17:36:42 -0400, Sam Tobin-Ho
Thanks. If you don't need places, compiling with places disabled (i.e.,
`configure --disable-places') would likely work around the bug for now.
At Thu, 30 Aug 2012 16:18:15 +0200, Tobias Hammer wrote:
> It uses only a single place. The system is 32bit Linux:
> Linux 2.6.32.59-0.7-pae #1 SMP 2012-0
It uses only a single place. The system is 32bit Linux:
Linux 2.6.32.59-0.7-pae #1 SMP 2012-07-13 15:50:56 +0200 i686 i686 i386
GNU/Linux
Tobias
On Thu, 30 Aug 2012 15:17:05 +0200, Matthew Flatt
wrote:
It looks like we still have problems with the `subprocess'
implementation that coope
On Aug 30, 2012, at 9:59 AM, Matthew Flatt wrote:
>>
>> The example that would break uses `call/cc` and delimiters to implement
>> `amb`. [...]
>> The abort handler here isn't prepared to deal with thunks that it would
>> receive from an emulated `call/cc`.
>
> Ok, it makes sense that we'd have
Here's something different to try:
In "src/racket/gc2/sighand.c", change to initialize_signal_handler() to
set `gc->generations_available = 0' and return install of installing
signal handlers. That should disable generational GC and the associated
write barrier.
At Thu, 30 Aug 2012 13:39:52 +0100
At Thu, 30 Aug 2012 09:34:09 -0400, Asumu Takikawa wrote:
> On 2012-08-30 06:53:58 -0600, Matthew Flatt wrote:
> > That variant is called `call/cc-via-composable' in the tests. It's
> > meant for use with `call-with-continuation-prompt-for-composable',
> > which is why there is an extra `call-with-
On 2012-08-30 06:53:58 -0600, Matthew Flatt wrote:
> That variant is called `call/cc-via-composable' in the tests. It's
> meant for use with `call-with-continuation-prompt-for-composable',
> which is why there is an extra `call-with-continuation-prompt'.
I think you may want the extra prompt in th
It looks like we still have problems with the `subprocess'
implementation that cooperates with places.
Does your program use multiple places, or just one? If it uses multiple
places, does it use `subprocess' in multiple places?
Is your platform 32-bit Linux?
At Thu, 30 Aug 2012 13:38:23 +0200, T
At Wed, 29 Aug 2012 23:06:52 -0400, Asumu Takikawa wrote:
> We have a proposal for changing `call/cc` so that it interacts better
> with delimited operators and would be safe to include in TR. The
> proposal is to remove the current `call/cc` and replace it with a
> function implemented with delimi
On Sat, 25 Aug 2012, Matthew Flatt wrote:
At Sat, 25 Aug 2012 20:04:45 +0100 (BST), Jan Wedekind wrote:
I tried to debug
However then the
program reports the following segmentation fault instead:
Program received signal SIGSEGV, Segmentation fault.
0x00282540 in scheme_gmp_tls_unload
Hi,
i am experiencing random crashes when using subprocess followed by a
subprocess-wait. My test program, that i call via subprocess is special,
in that it kills itself very fast with a sigkill after executing.
Unfortunately, i wasn't able to reproduce this behavior in a small sample
but i coul
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