Function memory_copy 

pub(crate) unsafe fn memory_copy(
    dst_mem: &VMMemoryDefinition,
    src_mem: &VMMemoryDefinition,
    dst: u32,
    src: u32,
    len: u32,
) -> Result<(), Trap>

Do an unsynchronized, non-atomic memory.copy for the memory.

Errors

Returns a Trap error when the source or destination ranges are out of bounds.

Safety

The memory is not copied atomically and is not synchronized: it’s the caller’s responsibility to synchronize.