ICE: Unexpected type returned from struct_tai

Reference rust-lang/rust#16812

src/16812_1.rs

@@ -0,0 +1,9 @@
+enum Foo {
+    Bar(u32, [u32]),
+}
+
+fn main() {
+    // Either of these lines can cause the ICE
+    let _x: &(u32, [u32]);
+    let _y: &Foo;
+}

src/16812_2.rs

@@ -0,0 +1,18 @@
+use std::path::Path;
+use std::path::PathBuf;
+
+pub enum Source
+{
+	File(Path), // compiler error :(
+	//File(PathBuf), // works :)
+}
+
+pub fn source_to_dbtype(src: &Source) -> u8
+{
+	match src
+	{
+		&Source::File(..) => 1,
+	}
+}
+
+fn main() {}