1 files changed, 37 insertions, 0 deletions
diff --git a/src/test/ui/runtime/signal-alternate-stack-cleanup.rs b/src/test/ui/runtime/signal-alternate-stack-cleanup.rs
new file mode 100644
index 000000000..8a6d73895
--- /dev/null
+++ b/src/test/ui/runtime/signal-alternate-stack-cleanup.rs
@@ -0,0 +1,37 @@
+// run-pass
+// Previously memory for alternate signal stack have been unmapped during
+// main thread exit while still being in use by signal handlers. This test
+// triggers this situation by sending signal from atexit handler.
+//
+// ignore-wasm32-bare no libc
+// ignore-windows
+// ignore-sgx no libc
+// ignore-vxworks no SIGWINCH in user space
+
+#![feature(rustc_private)]
+extern crate libc;
+
+use libc::*;
+
+unsafe extern "C" fn signal_handler(signum: c_int, _: *mut siginfo_t, _: *mut c_void) {
+    assert_eq!(signum, SIGWINCH);
+}
+
+extern "C" fn send_signal() {
+    unsafe {
+        raise(SIGWINCH);
+    }
+}
+
+fn main() {
+    unsafe {
+        // Install signal handler that runs on alternate signal stack.
+        let mut action: sigaction = std::mem::zeroed();
+        action.sa_flags = (SA_ONSTACK | SA_SIGINFO) as _;
+        action.sa_sigaction = signal_handler as sighandler_t;
+        sigaction(SIGWINCH, &action, std::ptr::null_mut());
+
+        // Send SIGWINCH on exit.
+        atexit(send_signal);
+    }
+}