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//@ run-pass
#![allow(unused_imports)]
#![allow(deprecated)]
//@ ignore-android since the dynamic linker sets a SIGPIPE handler (to do
// a crash report) so inheritance is moot on the entire platform
// libstd ignores SIGPIPE, and other libraries may set signal masks.
// Make sure that these behaviors don't get inherited to children
// spawned via std::process, since they're needed for traditional UNIX
// filter behavior.
// This test checks that `while echo y ; do : ; done | head` terminates
// (instead of running forever), and that it does not print an error
// message about a broken pipe.
//@ ignore-vxworks no 'sh'
//@ ignore-fuchsia no 'sh'
//@ needs-threads
//@ only-unix SIGPIPE is a unix feature
use std::process;
use std::thread;
fn main() {
// Just in case `yes` doesn't check for EPIPE...
thread::spawn(|| {
thread::sleep_ms(5000);
process::exit(1);
});
let output = process::Command::new("sh")
.arg("-c")
.arg("while echo y ; do : ; done | head")
.output()
.unwrap();
assert!(output.status.success());
assert!(output.stderr.len() == 0);
}
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