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#![feature(rustc_private)]
extern crate libc;
/// So tests don't have to bring libc in scope themselves
pub enum SignalHandler {
Ignore,
Default,
}
/// Helper to assert that [`libc::SIGPIPE`] has the expected signal handler.
pub fn assert_sigpipe_handler(expected_handler: SignalHandler) {
#[cfg(unix)]
#[cfg(not(any(
target_os = "emscripten",
target_os = "fuchsia",
target_os = "horizon",
target_os = "android",
)))]
{
let prev = unsafe { libc::signal(libc::SIGPIPE, libc::SIG_IGN) };
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);
};
}
}
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