2 // Previously memory for alternate signal stack have been unmapped during
3 // main thread exit while still being in use by signal handlers. This test
4 // triggers this situation by sending signal from atexit handler.
6 // ignore-wasm32-bare no libc
9 // ignore-vxworks no SIGWINCH in user space
11 #![feature(rustc_private)]
16 unsafe extern "C" fn signal_handler(signum: c_int, _: *mut siginfo_t, _: *mut c_void) {
17 assert_eq!(signum, SIGWINCH);
20 extern "C" fn send_signal() {
28 // Install signal handler that runs on alternate signal stack.
29 let mut action: sigaction = std::mem::zeroed();
30 action.sa_flags = (SA_ONSTACK | SA_SIGINFO) as _;
31 action.sa_sigaction = signal_handler as sighandler_t;
32 sigaction(SIGWINCH, &action, std::ptr::null_mut());
34 // Send SIGWINCH on exit.