Non-heap based structures

J Decker d3ck0r at
Wed Jul 27 06:33:32 UTC 2022

looks like initializes a
structure that's allocated already.  Yes it could be on the stack, or
(instead of _new)

On Wed, Jul 27, 2022 at 1:42 AM Philip Prindeville <
philipp_subx at> wrote:

> Hi,
> I suspect I already know the answer, but... is there a way to have a
> non-heap based structure like EVP_MD_CTX?
> If I don't want to have one be malloc'd (or OPENSSL_zalloc'd as the case
> may be), I can't have one be a stack variable or static, can I?
> I ask because I'm trying to replace some existing code that has no path to
> handle out-of-memory exceptions if EVP_MD_CTX_create() ever returns NULL...
> I guess the point of crypto/evp/evp_local.h is to completely hide details
> of the structure, including its size... so the answer to the original
> question is probably "no".  But I just wanted to make sure.
> Thanks,
> -Philip
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