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Don't unnecessarily change SIGPIPE disposition in unix_sigpipe tests #121554

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Feb 26, 2024
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Don't unnecessarily change SIGPIPE disposition in unix_sigpipe tests #121554

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12 changes: 6 additions & 6 deletions tests/ui/attributes/unix_sigpipe/auxiliary/sigpipe-utils.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -17,17 +17,17 @@ pub fn assert_sigpipe_handler(expected_handler: SignalHandler) {
target_os = "android",
)))]
{
let prev = unsafe { libc::signal(libc::SIGPIPE, libc::SIG_IGN) };
let actual = unsafe {
let mut actual: libc::sigaction = std::mem::zeroed();
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sad that libc doesn't have a good way to init this, can't even do it fully safely manually, because some fields have private fields :(

libc::sigaction(libc::SIGPIPE, std::ptr::null(), &mut actual);
actual.sa_sigaction
};

let expected = match expected_handler {
SignalHandler::Ignore => libc::SIG_IGN,
SignalHandler::Default => libc::SIG_DFL,
};
assert_eq!(prev, expected, "expected sigpipe value matches actual value");

// Unlikely to matter, but restore the old value anyway
unsafe {
libc::signal(libc::SIGPIPE, prev);
};
assert_eq!(actual, expected, "actual and expected SIGPIPE disposition differs");
}
}
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