diff --git a/src/libsyntax/ext/deriving/generic/mod.rs b/src/libsyntax/ext/deriving/generic/mod.rs
index f40be823a1a54..b31758e2d2a12 100644
--- a/src/libsyntax/ext/deriving/generic/mod.rs
+++ b/src/libsyntax/ext/deriving/generic/mod.rs
@@ -388,7 +388,7 @@ impl<'a> TraitDef<'a> {
methods: Vec
>) -> P {
let trait_path = self.path.to_path(cx, self.span, type_ident, generics);
- let Generics { mut lifetimes, ty_params, where_clause: _ } =
+ let Generics { mut lifetimes, ty_params, mut where_clause } =
self.generics.to_generics(cx, self.span, type_ident, generics);
let mut ty_params = ty_params.into_vec();
@@ -420,13 +420,33 @@ impl<'a> TraitDef<'a> {
ty_param.unbound.clone(),
None)
}));
+
+ // and similarly for where clauses
+ where_clause.predicates.extend(generics.where_clause.predicates.iter().map(|clause| {
+ match *clause {
+ ast::WherePredicate::BoundPredicate(ref wb) => {
+ ast::WherePredicate::BoundPredicate(ast::WhereBoundPredicate {
+ id: ast::DUMMY_NODE_ID,
+ span: self.span,
+ ident: wb.ident,
+ bounds: OwnedSlice::from_vec(wb.bounds.iter().map(|b| b.clone()).collect())
+ })
+ }
+ ast::WherePredicate::EqPredicate(ref we) => {
+ ast::WherePredicate::EqPredicate(ast::WhereEqPredicate {
+ id: ast::DUMMY_NODE_ID,
+ span: self.span,
+ path: we.path.clone(),
+ ty: we.ty.clone()
+ })
+ }
+ }
+ }));
+
let trait_generics = Generics {
lifetimes: lifetimes,
ty_params: OwnedSlice::from_vec(ty_params),
- where_clause: ast::WhereClause {
- id: ast::DUMMY_NODE_ID,
- predicates: Vec::new(),
- },
+ where_clause: where_clause
};
// Create the reference to the trait.
diff --git a/src/libsyntax/print/pprust.rs b/src/libsyntax/print/pprust.rs
index b08cf1112fbcf..18793525e82e6 100644
--- a/src/libsyntax/print/pprust.rs
+++ b/src/libsyntax/print/pprust.rs
@@ -1062,6 +1062,7 @@ impl<'a> State<'a> {
span: codemap::Span) -> IoResult<()> {
try!(self.print_ident(ident));
try!(self.print_generics(generics));
+ try!(self.print_where_clause(generics));
if ast_util::struct_def_is_tuple_like(struct_def) {
if !struct_def.fields.is_empty() {
try!(self.popen());
diff --git a/src/test/run-pass/issue-19358.rs b/src/test/run-pass/issue-19358.rs
new file mode 100644
index 0000000000000..e4c190f41169e
--- /dev/null
+++ b/src/test/run-pass/issue-19358.rs
@@ -0,0 +1,29 @@
+// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 or the MIT license
+// , at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+trait Trait {}
+
+#[deriving(Show)]
+struct Foo {
+ foo: T,
+}
+
+#[deriving(Show)]
+struct Bar where T: Trait {
+ bar: T,
+}
+
+impl Trait for int {}
+
+fn main() {
+ let a = Foo { foo: 12i };
+ let b = Bar { bar: 12i };
+ println!("{} {}", a, b);
+}