Thanks, I'll check it out.
On Tue, Oct 30, 2018 at 1:58 AM Armin Rigo <armin.r...@gmail.com> wrote:
> Hi Timothy,
>
> On Tue, 30 Oct 2018 at 00:42, Timothy Baldridge <tbaldri...@gmail.com>
> wrote:
> > typedef struct foo_t {
> > int a, b;
> > int _data[0];
> > }
> >
> > foo_t tmp = malloc(sizeof(foo_t) + 64);
>
> You can do that if you use the lltype.GcStruct type directly, not
> using "regular" RPython code. See the main example in
> rpython.rtyper.lltypesystem.rstr: the types STR and UNICODE. They are
> defined as lltype.GcStruct('name', ..some_regular_fields..,
> inlined_array_field), and allocated with lltype.malloc(STR,
> length_of_array).
>
> Note that you also need to prevent the JIT from seeing any such type:
> it has got special case for STR and UNICODE but doesn't handle the
> general case.
>
>
> A bientôt,
>
> Armin.
>
--
“One of the main causes of the fall of the Roman Empire was that–lacking
zero–they had no way to indicate successful termination of their C
programs.”
(Robert Firth)
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