Merging upstream version 1.68.2+dfsg1.

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

1 files changed, 18 insertions, 0 deletions

diff --git a/tests/mir-opt/dead-store-elimination/provenance_soundness.rs b/tests/mir-opt/dead-store-elimination/provenance_soundness.rs
new file mode 100644
index 000000000..11314e990
--- /dev/null
+++ b/tests/mir-opt/dead-store-elimination/provenance_soundness.rs
@@ -0,0 +1,18 @@
+// unit-test: DeadStoreElimination
+// compile-flags: -Zmir-emit-retag
+
+// Test that we don't remove pointer to int casts or retags
+
+// EMIT_MIR provenance_soundness.pointer_to_int.DeadStoreElimination.diff
+fn pointer_to_int(p: *mut i32) {
+    let _x = p as usize;
+    let _y = p as isize;
+}
+
+// EMIT_MIR provenance_soundness.retags.DeadStoreElimination.diff
+fn retags(_r: &mut i32) {}
+
+fn main() {
+    pointer_to_int(&mut 5 as *mut _);
+    retags(&mut 5);
+}