[CM] s7: garbage collector bug?

Kjetil Matheussen k.s.matheussen at gmail.com
Thu Jul 2 04:28:12 PDT 2020

I guess "gc temporaries" (search for "gc_temps_size" in s7.c) is the
most likely reason.

On Thu, Jul 2, 2020 at 1:03 PM Kjetil Matheussen
<k.s.matheussen at gmail.com> wrote:
> Hi Christos,
> I don't know the exact reason why float_arr_gc__free isn't called
> immediately in this specific case, although I can think of several,
> but since S7 doesn't have a precise garbage collector, you can not
> expect unused objects to be freed immediately.
> On Thu, Jul 2, 2020 at 12:03 PM Christos Vagias
> <chris.actondev at gmail.com> wrote:
> >
> > Hi Bil,
> >
> > I've stumbled upon something which seems like a bug in the gc.
> > I attach a snippet (which uses google test). I hope  it is verbose enough to demonstrate the problem.
> >
> > To summarize, I definced a c_type to handle dynamic float arrays.
> > The test as it is attached passes. However the test will not pass if the line proceeding the "problem 1" comment is  uncommented.
> >
> > The 2nd (minor) problem I stumbled upon is that one has to call "(gc)" twice for the free methods to be called.
> >
> > Another comment/question: how come there is no s7_run_gc function? From what I can tell you can only trigger it from the scheme side with "(gc)"
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