run_make_support/
parallel.rs

1use std::rc::Rc;
2
3use crate::{bin_name, is_windows_msvc, rfs, run_in_tmpdir, rustc};
4
5pub fn check_reproducibility(file: &str, args: &[&str]) {
6    let mut reference = None;
7    let bin_name = bin_name(file);
8
9    for _ in 0..10 {
10        // Tmp dir as previous runs affect output binary on windows.
11        run_in_tmpdir(|| {
12            let mut rustc = rustc();
13            rustc.input(format!("{file}.rs")).output(&bin_name);
14
15            for arg in args {
16                rustc.arg(arg);
17            }
18
19            if is_windows_msvc() {
20                rustc.arg("-Clink-arg=/Brepro");
21            }
22
23            rustc.run();
24
25            let current = Rc::new(rfs::read(&bin_name));
26            reference.get_or_insert(Rc::clone(&current));
27
28            assert_eq!(Some(current), reference);
29        });
30    }
31}
run_make_support/parallel.rs

run_make_support/
parallel.rs
