src/test/ui/lint/lint-strict-provenance-lossy-casts.rs

   1 #![feature(strict_provenance)]
   2 #![deny(lossy_provenance_casts)]
   3
   4 fn main() {
   5     let x: u8 = 37;
   6     let addr: usize = &x as *const u8 as usize;
   7     //~^ ERROR under strict provenance it is considered bad style to cast pointer `*const u8` to integer `usize`
   8
   9     let addr_32bit = &x as *const u8 as u32;
  10     //~^ ERROR under strict provenance it is considered bad style to cast pointer `*const u8` to integer `u32`
  11
  12     // don't add unnecessary parens in the suggestion
  13     let ptr = &x as *const u8;
  14     let ptr_addr = ptr as usize;
  15     //~^ ERROR under strict provenance it is considered bad style to cast pointer `*const u8` to integer `usize`
  16     let ptr_addr_32bit = ptr as u32;
  17     //~^ ERROR under strict provenance it is considered bad style to cast pointer `*const u8` to integer `u32`
  18 }