How do I add offsets to addresses stored in a raw pointer?

Question

My goal is to store addresses and add offsets. As an example I have something like this:

let base_addr = 0x0112A160 as *mut u32;

Now I want to store a second address which is base_addr + offset

I've tried some things but everything I've tried brings the program to crash with (exit code: 0xc0000005, STATUS_ACCESS_VIOLATION) or some other problems

Example of what I've tried:

let new_address: u32 = *base_addr + 0xF8;
let new_address = base_addr + 0xF8 as *mut 32; 

Can anyone explain to me how something like this is done correctly?

Answer 1

Use the method:

let base_addr = 0x0112A160 as *mut u32;
let new_address = unsafe { base_addr.offset(0xF8) };

or if you want to offset in bytes and can use nightly

#![feature(pointer_byte_offsets)] // at top of file
let new_address = unsafe { base_addr.byte_offset(0xF8) };