11 // ignore-emscripten no processes
12 // ignore-sgx no processes
15 use std::mem::MaybeUninit;
16 use std::process::Command;
19 #[link(name = "rust_test_helpers", kind = "static")]
21 #[link_name = "rust_dbg_extern_identity_u64"]
26 let args = env::args().skip(1).collect::<Vec<_>>();
29 "main-thread" => recurse(&MaybeUninit::uninit()),
30 "child-thread" => thread::spawn(|| recurse(&MaybeUninit::uninit())).join().unwrap(),
36 let me = env::current_exe().unwrap();
38 // The linux kernel has some different behavior for the main thread because
39 // the main thread's stack can typically grow. We can't always guarantee
40 // that we report stack overflow on the main thread, see #43052 for some
42 if cfg!(not(target_os = "linux")) {
43 assert_overflow(Command::new(&me).arg("main-thread"));
45 assert_overflow(Command::new(&me).arg("child-thread"));
48 #[allow(unconditional_recursion)]
49 fn recurse(array: &MaybeUninit<[u64; 1024]>) {
51 black_box(array.as_ptr() as u64);
53 let local: MaybeUninit<[u64; 1024]> = MaybeUninit::uninit();
57 fn assert_overflow(cmd: &mut Command) {
58 let output = cmd.output().unwrap();
59 assert!(!output.status.success());
60 let stdout = String::from_utf8_lossy(&output.stdout);
61 let stderr = String::from_utf8_lossy(&output.stderr);
62 println!("status: {}", output.status);
63 println!("stdout: {}", stdout);
64 println!("stderr: {}", stderr);
65 assert!(stdout.is_empty());
66 assert!(stderr.contains("has overflowed its stack\n"));