Add test from #358.

Author: emilio

libbindgen/tests/expectations/tests/issue-358.rs

@@ -0,0 +1,20 @@
+/* automatically generated by rust-bindgen */
+
+
+#![allow(non_snake_case)]
+
+
+#[repr(C)]
+#[derive(Debug, Copy, Clone)]
+pub struct JS_PersistentRooted<c> {
+    pub _base: a,
+    pub _phantom_0: ::std::marker::PhantomData<c>,
+}
+#[repr(C)]
+#[derive(Debug, Copy)]
+pub struct a {
+    pub b: *mut a,
+}
+impl Clone for a {
+    fn clone(&self) -> Self { *self }
+}

libbindgen/tests/headers/issue-358.hpp

@@ -0,0 +1,8 @@
+// bindgen-flags: -- -std=c++11
+namespace JS {
+template <typename> class PersistentRooted;
+}
+template <typename> class a { a *b; };
+namespace JS {
+template <typename c> class PersistentRooted : a<PersistentRooted<c>> {};
+}