fn remap(ctx: *anyopaque, memory: []u8, alignment: Alignment, new_len: usize, ret_addr: usize) ?[*]u8
fn remap(ctx: *anyopaque, memory: []u8, alignment: Alignment, new_len: usize, ret_addr: usize) ?[*]u8 { return if (resize(ctx, memory, alignment, new_len, ret_addr)) memory.ptr else null; }