1 files changed, 33 insertions, 0 deletions

diff --git a/tests/ui/issues/issue-6898.rs b/tests/ui/issues/issue-6898.rs
new file mode 100644
index 00000000000..44fd4bd0735
--- /dev/null
+++ b/tests/ui/issues/issue-6898.rs
@@ -0,0 +1,33 @@
+// check-pass
+// pretty-expanded FIXME #23616
+
+use std::mem;
+
+/// Returns the size of a type
+pub fn size_of<T>() -> usize {
+    TypeInfo::size_of(None::<T>)
+}
+
+/// Returns the size of the type that `val` points to
+pub fn size_of_val<T>(val: &T) -> usize {
+    val.size_of_val()
+}
+
+pub trait TypeInfo: Sized {
+    fn size_of(_lame_type_hint: Option<Self>) -> usize;
+    fn size_of_val(&self) -> usize;
+}
+
+impl<T> TypeInfo for T {
+    /// The size of the type in bytes.
+    fn size_of(_lame_type_hint: Option<T>) -> usize {
+        mem::size_of::<T>()
+    }
+
+    /// Returns the size of the type of `self` in bytes.
+    fn size_of_val(&self) -> usize {
+        TypeInfo::size_of(None::<T>)
+    }
+}
+
+pub fn main() {}