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90 lines
2.4 KiB
Rust
90 lines
2.4 KiB
Rust
// run-pass
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#![allow(unused_must_use)]
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#![allow(unconditional_recursion)]
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// ignore-android: FIXME (#20004)
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// ignore-emscripten no processes
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// ignore-sgx no processes
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// ignore-fuchsia must translate zircon signal to SIGABRT, FIXME (#58590)
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// ignore-nto no stack overflow handler used (no alternate stack available)
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#![feature(core_intrinsics)]
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#![feature(rustc_private)]
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#[cfg(unix)]
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extern crate libc;
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use std::env;
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use std::process::Command;
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use std::thread;
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// Inlining to avoid llvm turning the recursive functions into tail calls,
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// which doesn't consume stack.
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#[inline(always)]
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pub fn black_box<T>(dummy: T) { std::intrinsics::black_box(dummy); }
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fn silent_recurse() {
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let buf = [0u8; 1000];
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black_box(buf);
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silent_recurse();
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}
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fn loud_recurse() {
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println!("hello!");
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loud_recurse();
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black_box(()); // don't optimize this into a tail call. please.
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}
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#[cfg(unix)]
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fn check_status(status: std::process::ExitStatus)
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{
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use std::os::unix::process::ExitStatusExt;
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assert!(!status.success());
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assert_eq!(status.signal(), Some(libc::SIGABRT));
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}
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#[cfg(not(unix))]
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fn check_status(status: std::process::ExitStatus)
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{
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assert!(!status.success());
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}
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fn main() {
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let args: Vec<String> = env::args().collect();
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if args.len() > 1 && args[1] == "silent" {
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silent_recurse();
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} else if args.len() > 1 && args[1] == "loud" {
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loud_recurse();
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} else if args.len() > 1 && args[1] == "silent-thread" {
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thread::spawn(silent_recurse).join();
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} else if args.len() > 1 && args[1] == "loud-thread" {
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thread::spawn(loud_recurse).join();
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} else {
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let mut modes = vec![
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"silent-thread",
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"loud-thread",
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];
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// On linux it looks like the main thread can sometimes grow its stack
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// basically without bounds, so we only test the child thread cases
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// there.
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if !cfg!(target_os = "linux") {
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modes.push("silent");
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modes.push("loud");
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}
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for mode in modes {
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println!("testing: {}", mode);
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let silent = Command::new(&args[0]).arg(mode).output().unwrap();
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check_status(silent.status);
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let error = String::from_utf8_lossy(&silent.stderr);
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assert!(error.contains("has overflowed its stack"),
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"missing overflow message: {}", error);
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}
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}
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}
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