10 // ignore-cloudabi no processes
11 // ignore-emscripten no processes
12 // ignore-sgx no processes
13 // ignore-musl FIXME #31506
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(&[]),
31 "child-thread" => thread::spawn(|| recurse(&[])).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: &[u64]) {
51 unsafe { black_box(array.as_ptr() as u64); }
52 let local: [_; 1024] = unsafe { mem::uninitialized() };
56 fn assert_overflow(cmd: &mut Command) {
57 let output = cmd.output().unwrap();
58 assert!(!output.status.success());
59 let stdout = String::from_utf8_lossy(&output.stdout);
60 let stderr = String::from_utf8_lossy(&output.stderr);
61 println!("status: {}", output.status);
62 println!("stdout: {}", stdout);
63 println!("stderr: {}", stderr);
64 assert!(stdout.is_empty());
65 assert!(stderr.contains("has overflowed its stack\n"));