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5cbbced70d
When ASYNC_start_job is called with args != NULL but size == 0, OPENSSL_malloc(0) is called. Depending on the libc implementation, malloc(0) may return NULL, causing a silent failure. This patch modifies the logic to skip allocation if size is 0. CLA: trivial Reviewed-by: Norbert Pocs <norbertp@openssl.org> Reviewed-by: Saša Nedvědický <sashan@openssl.org> Reviewed-by: Tomas Mraz <tomas@openssl.org> (Merged from https://github.com/openssl/openssl/pull/29377)