For some situations it's certainly like you say - not important to initialize memory upon allocation. That's how malloc is ordinarily implemented. If your allo

For some situations it's certainly like you say - not important to initialize memory upon allocation. That's how malloc is ordinarily implemented. If your allocation is about to take on a matrix that you will load from a default value or calculation for every cell - that would only suffer unnecessary latency if memory were zeroed on allocation. But if your allocation is about to take on a struct with many fields and elements, it could be easily misused by not initializing every field (including when new fields are added), then a zero or other default initialization might be convenient.