src/test/ui/abi/segfault-no-out-of-stack.rs

   1 // run-pass
   2
   3 #![allow(unused_imports)]
   4 // ignore-emscripten can't run commands
   5 // ignore-sgx no processes
   6 // ignore-fuchsia must translate zircon signal to SIGSEGV/SIGBUS, FIXME (#58590)
   7 #![feature(rustc_private)]
   8
   9 extern crate libc;
  10
  11 use std::env;
  12 use std::process::{Command, ExitStatus};
  13
  14 #[link(name = "rust_test_helpers", kind = "static")]
  15 extern "C" {
  16     fn rust_get_null_ptr() -> *mut ::libc::c_char;
  17 }
  18
  19 #[cfg(unix)]
  20 fn check_status(status: std::process::ExitStatus) {
  21     use libc;
  22     use std::os::unix::process::ExitStatusExt;
  23
  24     assert!(status.signal() == Some(libc::SIGSEGV) || status.signal() == Some(libc::SIGBUS));
  25 }
  26
  27 #[cfg(not(unix))]
  28 fn check_status(status: std::process::ExitStatus) {
  29     assert!(!status.success());
  30 }
  31
  32 fn main() {
  33     let args: Vec<String> = env::args().collect();
  34     if args.len() > 1 && args[1] == "segfault" {
  35         unsafe {
  36             *rust_get_null_ptr() = 1;
  37         }; // trigger a segfault
  38     } else {
  39         let segfault = Command::new(&args[0]).arg("segfault").output().unwrap();
  40         let stderr = String::from_utf8_lossy(&segfault.stderr);
  41         let stdout = String::from_utf8_lossy(&segfault.stdout);
  42         println!("stdout: {}", stdout);
  43         println!("stderr: {}", stderr);
  44         println!("status: {}", segfault.status);
  45         check_status(segfault.status);
  46         assert!(!stderr.contains("has overflowed its stack"));
  47     }
  48 }