mirror of https://github.com/rust-lang/rust
48 lines
2.0 KiB
Rust
48 lines
2.0 KiB
Rust
// Builds with fat link-time-optimizations and the --sysroot flag used to be
|
|
// non-deterministic - that means, compiling twice with no changes would create
|
|
// slightly different outputs. This has been fixed by #63352 and #63505.
|
|
// Test 1: Compile with fat-lto twice, check that both compilation outputs are identical.
|
|
// Test 2: Compile with sysroot, then change the sysroot path from absolute to relative.
|
|
// Outputs should be identical.
|
|
// See https://github.com/rust-lang/rust/issues/34902
|
|
|
|
//@ ignore-windows
|
|
// Reasons:
|
|
// 1. The object files are reproducible, but their paths are not, which causes
|
|
// the first assertion in the test to fail.
|
|
// 2. When the sysroot gets copied, some symlinks must be re-created,
|
|
// which is a privileged action on Windows.
|
|
|
|
use run_make_support::{rfs, rust_lib_name, rustc};
|
|
|
|
fn main() {
|
|
// test 1: fat lto
|
|
rustc().input("reproducible-build-aux.rs").run();
|
|
rustc().input("reproducible-build.rs").arg("-Clto=fat").output("reproducible-build").run();
|
|
rfs::rename("reproducible-build", "reproducible-build-a");
|
|
rustc().input("reproducible-build.rs").arg("-Clto=fat").output("reproducible-build").run();
|
|
assert_eq!(rfs::read("reproducible-build"), rfs::read("reproducible-build-a"));
|
|
|
|
// test 2: sysroot
|
|
let sysroot = rustc().print("sysroot").run().stdout_utf8();
|
|
let sysroot = sysroot.trim();
|
|
|
|
rustc().input("reproducible-build-aux.rs").run();
|
|
rustc()
|
|
.input("reproducible-build.rs")
|
|
.crate_type("rlib")
|
|
.sysroot(&sysroot)
|
|
.arg(format!("--remap-path-prefix={sysroot}=/sysroot"))
|
|
.run();
|
|
rfs::copy_dir_all(&sysroot, "sysroot");
|
|
rfs::rename(rust_lib_name("reproducible_build"), rust_lib_name("foo"));
|
|
rustc()
|
|
.input("reproducible-build.rs")
|
|
.crate_type("rlib")
|
|
.sysroot("sysroot")
|
|
.arg("--remap-path-prefix=/sysroot=/sysroot")
|
|
.run();
|
|
|
|
assert_eq!(rfs::read(rust_lib_name("reproducible_build")), rfs::read(rust_lib_name("foo")));
|
|
}
|