Can anyone help to shed the light on mysterious bug in SBCL (found it!)

Vasily Postnicov shamaz.mazum at
Thu Apr 17 00:42:47 PDT 2014

Thanks for this fix, Matt. If I find more elegant solution, I'll write.

2014-04-16 20:37 GMT+04:00 Matthew Dillon <dillon at>:

>     I'm looking at how to adjust libthread_xu to clean out the red-zone and
>     thread stack cache(s).  Not sure if that will clean everything up
> though,
>     there might be (probably are) other allocations that are intended to
>     be persistent hidden in there.
>     In other words, even when we fix the red-zone issue, loading and
>     unloading shared libraries that weren't designed for it causes all
>     sorts of memory leaks and just shouldn't be done by any application.
>     The only shared libraries that should *ever* be unloaded are ones that
>     are designed for load/unload cycling (e.g. things like PAM modules and
>     such, not main-stream libraries).
>                                                 -Matt
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