Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 67 insertions, 0 deletions

diff --git a/src/test/ui/abi/stack-probes.rs b/src/test/ui/abi/stack-probes.rs
new file mode 100644
index 000000000..e998dd0f8
--- /dev/null
+++ b/src/test/ui/abi/stack-probes.rs
@@ -0,0 +1,67 @@
+// run-pass
+// ignore-arm
+// ignore-aarch64
+// ignore-mips
+// ignore-mips64
+// ignore-powerpc
+// ignore-s390x
+// ignore-sparc
+// ignore-sparc64
+// ignore-wasm
+// ignore-emscripten no processes
+// ignore-sgx no processes
+
+use std::env;
+use std::mem::MaybeUninit;
+use std::process::Command;
+use std::thread;
+
+#[link(name = "rust_test_helpers", kind = "static")]
+extern "C" {
+    #[link_name = "rust_dbg_extern_identity_u64"]
+    fn black_box(u: u64);
+}
+
+fn main() {
+    let args = env::args().skip(1).collect::<Vec<_>>();
+    if args.len() > 0 {
+        match &args[0][..] {
+            "main-thread" => recurse(&MaybeUninit::uninit()),
+            "child-thread" => thread::spawn(|| recurse(&MaybeUninit::uninit())).join().unwrap(),
+            _ => panic!(),
+        }
+        return;
+    }
+
+    let me = env::current_exe().unwrap();
+
+    // The linux kernel has some different behavior for the main thread because
+    // the main thread's stack can typically grow. We can't always guarantee
+    // that we report stack overflow on the main thread, see #43052 for some
+    // details
+    if cfg!(not(target_os = "linux")) {
+        assert_overflow(Command::new(&me).arg("main-thread"));
+    }
+    assert_overflow(Command::new(&me).arg("child-thread"));
+}
+
+#[allow(unconditional_recursion)]
+fn recurse(array: &MaybeUninit<[u64; 1024]>) {
+    unsafe {
+        black_box(array.as_ptr() as u64);
+    }
+    let local: MaybeUninit<[u64; 1024]> = MaybeUninit::uninit();
+    recurse(&local);
+}
+
+fn assert_overflow(cmd: &mut Command) {
+    let output = cmd.output().unwrap();
+    assert!(!output.status.success());
+    let stdout = String::from_utf8_lossy(&output.stdout);
+    let stderr = String::from_utf8_lossy(&output.stderr);
+    println!("status: {}", output.status);
+    println!("stdout: {}", stdout);
+    println!("stderr: {}", stderr);
+    assert!(stdout.is_empty());
+    assert!(stderr.contains("has overflowed its stack\n"));
+}