The malloc(3) family will absolutely fail on OpenBSD, for many reasons: login.conf/ulimits, calloc(3) for when integer overflow is detected (nmemb * size), same

The malloc(3) family will absolutely fail on OpenBSD, for many reasons: login.conf/ulimits, calloc(3) for when integer overflow is detected (nmemb * size), same for OpenBSD's reallocarray extension. And yes, because the system was unable to satisfy the requested allocation. Linux overcommit, and developer mindset is a detriment to software quality and portability.