1 files changed, 32 insertions, 0 deletions
diff --git a/tests/ui/codegen/equal-pointers-unequal/exposed-provenance/zero.rs b/tests/ui/codegen/equal-pointers-unequal/exposed-provenance/zero.rs
new file mode 100644
index 00000000000..603db5e08f4
--- /dev/null
+++ b/tests/ui/codegen/equal-pointers-unequal/exposed-provenance/zero.rs
@@ -0,0 +1,32 @@
+//@ known-bug: #107975
+//@ compile-flags: -Copt-level=2
+//@ run-pass
+
+// Derived from https://github.com/rust-lang/rust/issues/107975#issuecomment-1431758601
+
+#![feature(exposed_provenance)]
+
+use std::ptr;
+
+fn main() {
+    let a: usize = {
+        let v = 0u8;
+        ptr::from_ref(&v).expose_provenance()
+    };
+    let b: usize = {
+        let v = 0u8;
+        ptr::from_ref(&v).expose_provenance()
+    };
+
+    // So, are `a` and `b` equal?
+
+    // Let's check their difference.
+    let i: usize = a - b;
+    // It's not zero, which means `a` and `b` are not equal.
+    assert_ne!(i, 0);
+    // But it looks like zero...
+    assert_eq!(i.to_string(), "0");
+    // ...and now it *is* zero?
+    assert_eq!(i, 0);
+    // So `a` and `b` are equal after all?
+}