Auto merge of #338 - dtolnay:refs, r=oli-obk

Strip more references

Fixes #337.

serde_codegen/src/bound.rs

@@ -139,9 +139,9 @@ fn contains_generic(ty: &ast::Ty, generics: &ast::Generics) -> bool {
 //
 //    impl<'a, T> Serialize for Test<'a, T>
 //        where T: Serialize { ... }
-fn strip_reference(ty: &P<ast::Ty>) -> &P<ast::Ty> {
-    match ty.node {
-        ast::TyKind::Rptr(_, ref mut_ty) => &mut_ty.ty,
-        _ => ty
+fn strip_reference(mut ty: &P<ast::Ty>) -> &P<ast::Ty> {
+    while let ast::TyKind::Rptr(_, ref mut_ty) = ty.node {
+        ty = &mut_ty.ty;
     }
+    ty
 }

serde_tests/tests/test_gen.rs

@@ -49,6 +49,12 @@ enum EnumWith<T> {
         i: i32 },
 }
 
+#[derive(Serialize)]
+struct MultipleRef<'a, 'b, 'c, T> where T: 'c, 'c: 'b, 'b: 'a {
+    t: T,
+    rrrt: &'a &'b &'c T,
+}
+
 //////////////////////////////////////////////////////////////////////////
 
 fn ser_i32<S: Serializer>(_: &i32, _: &mut S) -> Result<(), S::Error> { panic!() }