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Test #[unix_sigpipe = "inherit"] with both SIG_DFL and SIG_IGN

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Add a test that fails if `#[unix_sigpipe = "inherit"]` wrongly results
in `SIGPIPE` being `SIG_DFL` if the parent has `SIG_IGN`. We have no
current test for this particular case.
This commit is contained in:
Martin Nordholts 2024-04-01 11:27:48 +02:00
parent defef8658e
commit 4559e61dd7
3 changed files with 39 additions and 8 deletions
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8
tests/ui/attributes/unix_sigpipe/auxiliary/assert-inherit-sig_dfl.rs Normal file
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@ -0,0 +1,8 @@
//@ aux-crate: sigpipe_utils=sigpipe-utils.rs
#![feature(unix_sigpipe)]
#[unix_sigpipe = "inherit"]
fn main() {
sigpipe_utils::assert_sigpipe_handler(sigpipe_utils::SignalHandler::Default);
}

8
tests/ui/attributes/unix_sigpipe/auxiliary/assert-inherit-sig_ign.rs Normal file
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@ -0,0 +1,8 @@
//@ aux-crate: sigpipe_utils=sigpipe-utils.rs
#![feature(unix_sigpipe)]
#[unix_sigpipe = "inherit"]
fn main() {
sigpipe_utils::assert_sigpipe_handler(sigpipe_utils::SignalHandler::Ignore);
}

31
tests/ui/attributes/unix_sigpipe/unix_sigpipe-inherit.rs
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@ -1,14 +1,29 @@
//@ 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
//@ aux-build:sigpipe-utils.rs
#![feature(unix_sigpipe)]
#![feature(rustc_private, unix_sigpipe)]
#[unix_sigpipe = "inherit"]
extern crate libc;
// By default the Rust runtime resets SIGPIPE to SIG_DFL before exec:ing child
// processes so opt-out of that with `#[unix_sigpipe = "sig_dfl"]`. See
// https://github.com/rust-lang/rust/blob/bf4de3a874753bbee3323081c8b0c133444fed2d/library/std/src/sys/pal/unix/process/process_unix.rs#L359-L384
#[unix_sigpipe = "sig_dfl"]
fn main() {
extern crate sigpipe_utils;
// First expect SIG_DFL in a child process with #[unix_sigpipe = "inherit"].
assert_inherit_sigpipe_disposition("auxiliary/bin/assert-inherit-sig_dfl");
// #[unix_sigpipe = "inherit"] is active, so SIGPIPE shall NOT be ignored,
// instead the default handler shall be installed. (We assume that the
// process that runs these tests have the default handler.)
sigpipe_utils::assert_sigpipe_handler(sigpipe_utils::SignalHandler::Default);
// With SIG_IGN we expect #[unix_sigpipe = "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());
}