Re: [Chicken-hackers] Segfault with chicken 4.8.0 RC3

[Thomas Hintz]

Ah, so it is a problem with the heap resizing. If I statically set the heap size to a big enough size, it never crashes. If I just let Chicken resize the heap itself, it inevitably crashes. Even if I start with a large heap size, Chicken shrinks it and it then segfaults.

On Mon, Sep 10, 2012 at 10:43 AM, Thomas Hintz <address@hidden> wrote:

Hmm. It's essentially a hierarchical key/value store. You pass in queries (which is what mda-client.scm in the same repo helps with) and mda-server.scm executes them and sends back the response. So sending the message (via zmq) (put "value" "user" "key"), stores "value" in tokyocabinet with the key "user/key". (get "user" "key") returns "value" (via (tc-hdb-get db "user/key")). It also has a few misc functions for things like creating list/indexes and returning them, but those end up being just put/get eventually. I can't figure out how to isolate a test case yet. This is happening on my live webapp and I have only been able to reproduce it with a customer's data, which is not something I can share. I'm still working out how to get a generic test case.

On Mon, Sep 10, 2012 at 10:33 AM, Peter Bex <address@hidden> wrote:

On Mon, Sep 10, 2012 at 09:05:22AM -0700, Thomas Hintz wrote:
> I'm getting a segfault on the latest rc and I'm not sure how to go about
> debugging it. I've gotten it somewhat reproducible. I have a test case of
> sorts, but it is from a complex web app in which I haven't been able to
> distill it down much yet. With that "test case", it segfaults about 33% of
> the time. The fault is occurring in my database management system which is
> built on zmq and tokyocabinet. The source for the dbms is here:
> https://github.com/ThomasHintz/mda/blob/master/mda-server.scm.

I tried it, and it compiled (after installing zeromq and tokyocabinet).
How does it work, and what do I do to trigger the error?

Cheers,
Peter
--
http://sjamaan.ath.cx
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