1 #![feature(slice_concat_ext)]
3 extern crate compiletest_rs as compiletest;
8 use std::slice::SliceConcatExt;
9 use std::path::{PathBuf, Path};
12 macro_rules! eprintln {
14 let stderr = std::io::stderr();
15 writeln!(stderr.lock(), $($arg)*).unwrap();
19 fn miri_path() -> PathBuf {
20 if rustc_test_suite().is_some() {
21 PathBuf::from(option_env!("MIRI_PATH").unwrap())
23 PathBuf::from(concat!("target/", env!("PROFILE"), "/miri"))
27 fn rustc_test_suite() -> Option<PathBuf> {
28 option_env!("RUSTC_TEST_SUITE").map(PathBuf::from)
31 fn rustc_lib_path() -> PathBuf {
32 option_env!("RUSTC_LIB_PATH").unwrap().into()
35 fn have_fullmir() -> bool {
36 // We assume we have full MIR when MIRI_SYSROOT is set or when we are in rustc
37 std::env::var("MIRI_SYSROOT").is_ok() || rustc_test_suite().is_some()
40 fn compile_fail(sysroot: &Path, path: &str, target: &str, host: &str, need_fullmir: bool) {
41 if need_fullmir && !have_fullmir() {
42 eprintln!("{}", format!(
43 "## Skipping compile-fail tests in {} against miri for target {} due to missing mir",
50 eprintln!("{}", format!(
51 "## Running compile-fail tests in {} against miri for target {}",
55 let mut config = compiletest::Config::default().tempdir();
56 config.mode = "compile-fail".parse().expect("Invalid mode");
57 config.rustc_path = miri_path();
58 let mut flags = Vec::new();
59 if rustc_test_suite().is_some() {
60 config.run_lib_path = rustc_lib_path();
61 config.compile_lib_path = rustc_lib_path();
63 flags.push(format!("--sysroot {}", sysroot.display()));
64 flags.push("-Dwarnings -Dunused".to_owned()); // overwrite the -Aunused in compiletest-rs
65 config.src_base = PathBuf::from(path.to_string());
66 flags.push("-Zmir-opt-level=0".to_owned()); // optimization circumvents some stacked borrow checks
67 flags.push("-Zmir-emit-validate=1".to_owned());
68 config.target_rustcflags = Some(flags.join(" "));
69 config.target = target.to_owned();
70 config.host = host.to_owned();
71 compiletest::run_tests(&config);
74 fn miri_pass(sysroot: &Path, path: &str, target: &str, host: &str, need_fullmir: bool, opt: bool) {
75 if need_fullmir && !have_fullmir() {
76 eprintln!("{}", format!(
77 "## Skipping run-pass tests in {} against miri for target {} due to missing mir",
84 let opt_str = if opt { " with optimizations" } else { "" };
85 eprintln!("{}", format!(
86 "## Running run-pass tests in {} against miri for target {}{}",
91 let mut config = compiletest::Config::default().tempdir();
92 config.mode = "ui".parse().expect("Invalid mode");
93 config.src_base = PathBuf::from(path);
94 config.target = target.to_owned();
95 config.host = host.to_owned();
96 config.rustc_path = miri_path();
97 if rustc_test_suite().is_some() {
98 config.run_lib_path = rustc_lib_path();
99 config.compile_lib_path = rustc_lib_path();
101 let mut flags = Vec::new();
102 flags.push(format!("--sysroot {}", sysroot.display()));
103 flags.push("-Dwarnings -Dunused".to_owned()); // overwrite the -Aunused in compiletest-rs
105 flags.push("-Zmiri-start-fn".to_owned());
108 // FIXME: Using level 1 (instead of 3) for now, as the optimizer is pretty broken
110 // Level 0 and 1 are not the same, so this still gives us *some* coverage.
111 // See https://github.com/rust-lang/rust/issues/50411
112 flags.push("-Zmir-opt-level=1".to_owned());
114 flags.push("-Zmir-opt-level=0".to_owned());
115 // For now, only validate without optimizations. Inlining breaks validation.
116 flags.push("-Zmir-emit-validate=1".to_owned());
118 config.target_rustcflags = Some(flags.join(" "));
119 compiletest::run_tests(&config);
122 fn is_target_dir<P: Into<PathBuf>>(path: P) -> bool {
123 let mut path = path.into();
125 path.metadata().map(|m| m.is_dir()).unwrap_or(false)
128 fn for_all_targets<F: FnMut(String)>(sysroot: &Path, mut f: F) {
129 let target_dir = sysroot.join("lib").join("rustlib");
130 for entry in std::fs::read_dir(target_dir).expect("invalid sysroot") {
131 let entry = entry.unwrap();
132 if !is_target_dir(entry.path()) {
135 let target = entry.file_name().into_string().unwrap();
140 fn get_sysroot() -> PathBuf {
141 let sysroot = std::env::var("MIRI_SYSROOT").unwrap_or_else(|_| {
142 let sysroot = std::process::Command::new("rustc")
146 .expect("rustc not found")
148 String::from_utf8(sysroot).expect("sysroot is not utf8")
150 PathBuf::from(sysroot.trim())
153 fn get_host() -> String {
154 let rustc = rustc_test_suite().unwrap_or(PathBuf::from("rustc"));
155 println!("using rustc at {}", rustc.display());
156 let host = std::process::Command::new(rustc)
159 .expect("rustc not found for -vV")
161 let host = std::str::from_utf8(&host).expect("sysroot is not utf8");
162 let host = host.split("\nhost: ").nth(1).expect(
163 "no host: part in rustc -vV",
165 let host = host.split('\n').next().expect("no \n after host");
169 fn run_pass_miri(opt: bool) {
170 let sysroot = get_sysroot();
171 let host = get_host();
173 for_all_targets(&sysroot, |target| {
174 miri_pass(&sysroot, "tests/run-pass", &target, &host, false, opt);
176 miri_pass(&sysroot, "tests/run-pass-fullmir", &host, &host, true, opt);
179 fn compile_fail_miri() {
180 let sysroot = get_sysroot();
181 let host = get_host();
183 // FIXME: run tests for other targets, too
184 compile_fail(&sysroot, "tests/compile-fail", &host, &host, false);
185 compile_fail(&sysroot, "tests/compile-fail-fullmir", &host, &host, true);
190 // We put everything into a single test to avoid the parallelism `cargo test`
191 // introduces. We still get parallelism within our tests because `compiletest`
192 // uses `libtest` which runs jobs in parallel.
194 run_pass_miri(false);