src/test/ui/process/process-sigpipe.rs

   1 // run-pass
   2 #![allow(unused_imports)]
   3 #![allow(deprecated)]
   4
   5 // ignore-android since the dynamic linker sets a SIGPIPE handler (to do
   6 // a crash report) so inheritance is moot on the entire platform
   7
   8 // libstd ignores SIGPIPE, and other libraries may set signal masks.
   9 // Make sure that these behaviors don't get inherited to children
  10 // spawned via std::process, since they're needed for traditional UNIX
  11 // filter behavior. This test checks that `yes | head` terminates
  12 // (instead of running forever), and that it does not print an error
  13 // message about a broken pipe.
  14
  15 // ignore-emscripten no threads support
  16 // ignore-vxworks no 'sh'
  17 // ignore-fuchsia no 'sh'
  18
  19 use std::process;
  20 use std::thread;
  21
  22 #[cfg(unix)]
  23 fn main() {
  24     // Just in case `yes` doesn't check for EPIPE...
  25     thread::spawn(|| {
  26         thread::sleep_ms(5000);
  27         process::exit(1);
  28     });
  29     let output = process::Command::new("sh").arg("-c").arg("yes | head").output().unwrap();
  30     assert!(output.status.success());
  31     assert!(output.stderr.len() == 0);
  32 }
  33
  34 #[cfg(not(unix))]
  35 fn main() {
  36     // Not worried about signal masks on other platforms
  37 }