1 files changed, 24 insertions, 0 deletions
diff --git a/tests/ui/consts/issue-66345.rs b/tests/ui/consts/issue-66345.rs
new file mode 100644
index 000000000..4971d9647
--- /dev/null
+++ b/tests/ui/consts/issue-66345.rs
@@ -0,0 +1,24 @@
+// run-pass
+// compile-flags: -Z mir-opt-level=4
+
+// Checks that the compiler does not ICE when passing references to field of by-value struct
+// with -Z mir-opt-level=4
+
+fn do_nothing(_: &()) {}
+
+pub struct Foo {
+    bar: (),
+}
+
+pub fn by_value_1(foo: Foo) {
+    do_nothing(&foo.bar);
+}
+
+pub fn by_value_2<T>(foo: Foo) {
+    do_nothing(&foo.bar);
+}
+
+fn main() {
+    by_value_1(Foo { bar: () });
+    by_value_2::<()>(Foo { bar: () });
+}