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39 lines
1.0 KiB
Rust
39 lines
1.0 KiB
Rust
//@ run-pass
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// Previously memory for alternate signal stack have been unmapped during
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// main thread exit while still being in use by signal handlers. This test
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// triggers this situation by sending signal from atexit handler.
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//
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//@ ignore-wasm32-bare no libc
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//@ ignore-windows
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//@ ignore-sgx no libc
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//@ ignore-vxworks no SIGWINCH in user space
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//@ ignore-nto no SA_ONSTACK
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#![feature(rustc_private)]
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extern crate libc;
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use libc::*;
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unsafe extern "C" fn signal_handler(signum: c_int, _: *mut siginfo_t, _: *mut c_void) {
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assert_eq!(signum, SIGWINCH);
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}
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extern "C" fn send_signal() {
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unsafe {
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raise(SIGWINCH);
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}
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}
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fn main() {
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unsafe {
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// Install signal handler that runs on alternate signal stack.
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let mut action: sigaction = std::mem::zeroed();
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action.sa_flags = (SA_ONSTACK | SA_SIGINFO) as _;
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action.sa_sigaction = signal_handler as sighandler_t;
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sigaction(SIGWINCH, &action, std::ptr::null_mut());
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// Send SIGWINCH on exit.
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atexit(send_signal);
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}
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}
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