Kind of: > If the size of the space requested is zero, the behavior is implementation-defined: either a null pointer is returned to indicate an error, or the b

Kind of: > If the size of the space requested is zero, the behavior is implementation-defined: either a null pointer is returned to indicate an error, or the behavior is as if the size were some nonzero value, except that the returned pointer shall not be used to access an object So it may actually allocate (although the allocation is unusable).