From 218caa410aa38c29984be31a5229b9fa717560ee Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 14:19:13 +0200
Subject: Merging upstream version 1.68.2+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 src/test/ui/abi/stack-probes.rs | 85 -----------------------------------------
 1 file changed, 85 deletions(-)
 delete mode 100644 src/test/ui/abi/stack-probes.rs

(limited to 'src/test/ui/abi/stack-probes.rs')

diff --git a/src/test/ui/abi/stack-probes.rs b/src/test/ui/abi/stack-probes.rs
deleted file mode 100644
index e7b91644b..000000000
--- a/src/test/ui/abi/stack-probes.rs
+++ /dev/null
@@ -1,85 +0,0 @@
-// run-pass
-// ignore-arm
-// ignore-aarch64
-// ignore-mips
-// ignore-mips64
-// ignore-sparc
-// ignore-sparc64
-// ignore-wasm
-// ignore-emscripten no processes
-// ignore-sgx no processes
-// ignore-fuchsia no exception handler registered for segfault
-
-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-recurse" => overflow_recurse(),
-            "child-recurse" => thread::spawn(overflow_recurse).join().unwrap(),
-            "child-frame" => overflow_frame(),
-            _ => 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-recurse"));
-    }
-    assert_overflow(Command::new(&me).arg("child-recurse"));
-    assert_overflow(Command::new(&me).arg("child-frame"));
-}
-
-#[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);
-}
-
-#[inline(never)]
-fn overflow_recurse() {
-    recurse(&MaybeUninit::uninit());
-}
-
-fn overflow_frame() {
-    // By using a 1MiB stack frame with only 512KiB stack, we'll jump over any
-    // guard page, even with 64K pages -- but stack probes should catch it.
-    const STACK_SIZE: usize = 512 * 1024;
-    thread::Builder::new().stack_size(STACK_SIZE).spawn(|| {
-        let local: MaybeUninit<[u8; 2 * STACK_SIZE]> = MaybeUninit::uninit();
-        unsafe {
-            black_box(local.as_ptr() as u64);
-        }
-    }).unwrap().join().unwrap();
-}
-
-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"));
-}
-- 
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