Adding upstream version 1.65.0+dfsg1.upstream/1.65.0+dfsg1

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

1 files changed, 39 insertions, 0 deletions

diff --git a/src/test/ui/abi/issues/issue-97463-broken-abi-leaked-uninit-data.rs b/src/test/ui/abi/issues/issue-97463-broken-abi-leaked-uninit-data.rs
new file mode 100644
index 000000000..fba880d4f
--- /dev/null
+++ b/src/test/ui/abi/issues/issue-97463-broken-abi-leaked-uninit-data.rs
@@ -0,0 +1,39 @@
+// run-pass
+// ignore-wasm
+#![allow(dead_code)]
+#![allow(improper_ctypes)]
+
+#[link(name = "rust_test_helpers", kind = "static")]
+extern "C" {
+    pub fn issue_97463_leak_uninit_data(a: u32, b: u32, c: u32) -> u16;
+}
+
+fn main() {
+    const C1: usize = 0x327b23c6;
+    const C2: usize = C1 & 0xFFFF;
+
+    let r1: usize = 0x0;
+    let r2: usize = C1;
+    let r3: usize = 0x0;
+    let value: u16 = unsafe { issue_97463_leak_uninit_data(r1 as u32, r2 as u32, r3 as u32) };
+
+    // NOTE: as an example of the sensitivity of this test to optimization choices,
+    // uncommenting this block of code makes the bug go away on pnkfelix's machine.
+    // (But observing via `dbg!` doesn't hide the bug. At least sometimes.)
+    /*
+    println!("{}", value);
+    println!("{}", value as usize);
+    println!("{}", usize::from(value));
+    println!("{}", (value as usize) & 0xFFFF);
+     */
+
+    let d1 = value;
+    let d2 = value as usize;
+    let d3 = usize::from(value);
+    let d4 = (value as usize) & 0xFFFF;
+
+    let d = (&d1, &d2, &d3, &d4);
+    let d_ = (d1, d2, d3, d4);
+
+    assert_eq!(((&(C2 as u16), &C2, &C2, &C2), (C2 as u16, C2, C2, C2)), (d, d_));
+}