os-rust/tests/ui/runtime/on-broken-pipe/inherit.rs
Martin Nordholts cde0cde151 Change SIGPIPE ui from #[unix_sigpipe = "..."] to -Zon-broken-pipe=...
In the stabilization attempt of `#[unix_sigpipe = "sig_dfl"]`, a concern
was raised related to using a language attribute for the feature: Long
term, we want `fn lang_start()` to be definable by any crate, not just
libstd. Having a special language attribute in that case becomes
awkward.

So as a first step towards towards the next stabilization attempt, this
PR changes the `#[unix_sigpipe = "..."]` attribute to a compiler flag
`-Zon-broken-pipe=...` to remove that concern, since now the language
is not "contaminated" by this feature.

Another point was also raised, namely that the ui should not leak
**how** it does things, but rather what the **end effect** is. The new
flag uses the proposed naming. This is of course something that can be
iterated on further before stabilization.
2024-05-02 19:48:29 +02:00

29 lines
1.1 KiB
Rust

//@ ignore-cross-compile because aux-bin does not yet support it
//@ only-unix because SIGPIPE is a unix thing
//@ aux-bin: assert-inherit-sig_dfl.rs
//@ aux-bin: assert-inherit-sig_ign.rs
//@ run-pass
//@ compile-flags: -Zon-broken-pipe=kill
#![feature(rustc_private)]
extern crate libc;
// By default the Rust runtime resets SIGPIPE to SIG_DFL before exec'ing child
// processes so opt-out of that with `-Zon-broken-pipe=kill`. See
// https://github.com/rust-lang/rust/blob/bf4de3a874753bbee3323081c8b0c133444fed2d/library/std/src/sys/pal/unix/process/process_unix.rs#L359-L384
fn main() {
// First expect SIG_DFL in a child process with -`Zon-broken-pipe=inherit`.
assert_inherit_sigpipe_disposition("auxiliary/bin/assert-inherit-sig_dfl");
// With SIG_IGN we expect `-Zon-broken-pipe=inherit` to also get SIG_IGN.
unsafe {
libc::signal(libc::SIGPIPE, libc::SIG_IGN);
}
assert_inherit_sigpipe_disposition("auxiliary/bin/assert-inherit-sig_ign");
}
fn assert_inherit_sigpipe_disposition(aux_bin: &str) {
let mut cmd = std::process::Command::new(aux_bin);
assert!(cmd.status().unwrap().success());
}