File: intrinsics-2.rs

package info (click to toggle)
gcc-arm-none-eabi 15%3A14.2.rel1-1
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 1,099,328 kB
  • sloc: cpp: 3,627,108; ansic: 2,571,498; ada: 834,230; f90: 235,082; makefile: 79,231; asm: 74,984; xml: 51,692; exp: 39,736; sh: 33,298; objc: 15,629; python: 15,069; fortran: 14,429; pascal: 7,003; awk: 5,070; perl: 3,106; ml: 285; lisp: 253; lex: 204; haskell: 135
file content (25 lines) | stat: -rw-r--r-- 506 bytes parent folder | download 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
 
// { dg-additional-options -fdump-tree-original }

#![feature(intrinsics)]

#[lang = "sized"]
pub trait Sized {}

extern "rust-intrinsic" {
    pub fn size_of<T>() -> usize;
}

fn main() -> i32 {
    unsafe fn foo() -> usize {
        let f: f32;

        let s_f32 = size_of::<f32>();
        let s_f64 = size_of::<f64>();
        let s_f32_again = size_of::<f32>();

        s_f32 + s_f64 + s_f32_again
    }

    // useless code, just used for function compilation caching
    unsafe { foo() as i32 }
}