2017-06-21 21:08:18 +02:00
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// ignore-arm
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2017-07-21 10:21:42 +02:00
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// ignore-aarch64
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2018-03-09 11:05:05 +01:00
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// ignore-mips
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// ignore-mips64
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2018-03-29 19:25:32 +02:00
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// ignore-powerpc
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// ignore-s390x
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2018-06-04 13:27:32 +02:00
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// ignore-sparc
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// ignore-sparc64
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2017-06-21 21:08:18 +02:00
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// ignore-wasm
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2018-01-02 14:11:41 +01:00
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// ignore-cloudabi no processes
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2017-10-18 03:45:42 +02:00
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// ignore-emscripten no processes
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2019-04-24 18:26:33 +02:00
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// ignore-sgx no processes
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2017-06-21 21:08:18 +02:00
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// ignore-musl FIXME #31506
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use std::mem;
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use std::process::Command;
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use std::thread;
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use std::env;
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#[link(name = "rust_test_helpers", kind = "static")]
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extern {
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#[link_name = "rust_dbg_extern_identity_u64"]
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fn black_box(u: u64);
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}
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fn main() {
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let args = env::args().skip(1).collect::<Vec<_>>();
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if args.len() > 0 {
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match &args[0][..] {
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"main-thread" => recurse(&[]),
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"child-thread" => thread::spawn(|| recurse(&[])).join().unwrap(),
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_ => panic!(),
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}
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return
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}
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let me = env::current_exe().unwrap();
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// The linux kernel has some different behavior for the main thread because
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// the main thread's stack can typically grow. We can't always guarantee
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// that we report stack overflow on the main thread, see #43052 for some
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// details
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if cfg!(not(target_os = "linux")) {
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assert_overflow(Command::new(&me).arg("main-thread"));
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}
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assert_overflow(Command::new(&me).arg("child-thread"));
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}
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#[allow(unconditional_recursion)]
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fn recurse(array: &[u64]) {
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unsafe { black_box(array.as_ptr() as u64); }
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2019-07-04 17:24:56 +02:00
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#[allow(deprecated)]
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2017-06-21 21:08:18 +02:00
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let local: [_; 1024] = unsafe { mem::uninitialized() };
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recurse(&local);
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}
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fn assert_overflow(cmd: &mut Command) {
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let output = cmd.output().unwrap();
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assert!(!output.status.success());
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let stdout = String::from_utf8_lossy(&output.stdout);
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let stderr = String::from_utf8_lossy(&output.stderr);
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println!("status: {}", output.status);
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println!("stdout: {}", stdout);
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println!("stderr: {}", stderr);
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assert!(stdout.is_empty());
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assert!(stderr.contains("has overflowed its stack\n"));
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}
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