nc 0.8.13

Access system calls directly
Documentation 
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/// Remap a virtual memory address
pub unsafe fn mremap(
    addr: usize,
    old_len: size_t,
    new_len: size_t,
    flags: usize,
    new_addr: usize,
) -> Result<usize, Errno> {
    syscall5(SYS_MREMAP, addr, old_len, new_len, flags, new_addr)
}