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