Let's look at unsafe functions and blocks, starting with unsafe functions:
// unsafe_function.rsfn get_value(i: *const i32) -> i32 { *i}fn main() { let foo = &1024 as *const i32; let _bar = get_value(foo);}
We defined a get_value function that takes in a pointer to an i32 value, which simply returns the pointed value back by dereferencing it. In main, we are passing foo to get_value, which is a reference to an i32 value that 1024 cast to *const i32. If we try running this, the compiler says the following:
As we already said, we need an unsafe function or block to dereference a raw pointer. Let's go with the first ...
