Fallout: tests. As tests frequently elide things, lots of changes

here.  Some of this may have been poorly rebased, though I tried to be
careful and preserve the spirit of the test.

src/libcoretest/mem.rs

@@ -92,7 +92,7 @@ fn test_transmute_copy() {
 
 #[test]
 fn test_transmute() {
-    trait Foo {}
+    trait Foo { fn dummy(&self) { } }
     impl Foo for int {}
 
     let a = box 100 as Box<Foo>;

src/test/auxiliary/coherence-orphan-lib.rs

@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-pub trait TheTrait<T> {
+pub trait TheTrait<T> : ::std::marker::PhantomFn<T> {
     fn the_fn(&self);
 }
 

src/test/auxiliary/default_type_params_xc.rs

@@ -12,4 +12,5 @@
 
 pub struct FakeHeap;
 
-pub struct FakeVec<T, A = FakeHeap>;
+pub struct FakeVec<T, A = FakeHeap> { pub f: Option<(T,A)> }
+

src/test/auxiliary/inner_static.rs

@@ -8,11 +8,11 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-pub struct A<T>;
+pub struct A<T> { pub v: T }
-pub struct B<T>;
+pub struct B<T> { pub v: T }
 
 pub mod test {
-    pub struct A<T>;
+    pub struct A<T> { pub v: T }
 
     impl<T> A<T> {
         pub fn foo(&self) -> int {
@@ -52,9 +52,9 @@ pub fn bar(&self) -> int {
 }
 
 pub fn foo() -> int {
-    let a = A::<()>;
+    let a = A { v: () };
-    let b = B::<()>;
+    let b = B { v: () };
-    let c = test::A::<()>;
+    let c = test::A { v: () };
     return a.foo() + a.bar() +
            b.foo() + b.bar() +
            c.foo() + c.bar();

src/test/auxiliary/issue-14421.rs

@@ -10,6 +10,7 @@
 
 #![crate_type="lib"]
 #![deny(warnings)]
+#![allow(dead_code)]
 
 pub use src::aliases::B;
 pub use src::hidden_core::make;
@@ -23,9 +24,9 @@ pub mod aliases {
     pub mod hidden_core {
         use super::aliases::B;
 
-        pub struct A<T>;
+        pub struct A<T> { t: T }
 
-        pub fn make() -> B { A }
+        pub fn make() -> B { A { t: 1.0 } }
 
         impl<T> A<T> {
             pub fn foo(&mut self) { println!("called foo"); }

src/test/auxiliary/issue-16643.rs

@@ -10,7 +10,7 @@
 
 #![crate_type = "lib"]
 
-pub struct TreeBuilder<H>;
+pub struct TreeBuilder<H> { pub h: H }
 
 impl<H> TreeBuilder<H> {
     pub fn process_token(&mut self) {

src/test/auxiliary/issue-17662.rs

@@ -11,7 +11,7 @@
 #![crate_type = "lib"]
 
 pub trait Foo<'a, T> {
-    fn foo(&self) -> T;
+    fn foo(&'a self) -> T;
 }
 
 pub fn foo<'a, T>(x: &'a Foo<'a, T>) -> T {

src/test/auxiliary/issue-2380.rs

@@ -14,7 +14,10 @@
 #![allow(unknown_features)]
 #![feature(box_syntax)]
 
-pub trait i<T> { }
+pub trait i<T>
+{
+    fn dummy(&self, t: T) -> T { panic!() }
+}
 
 pub fn f<T>() -> Box<i<T>+'static> {
     impl<T> i<T> for () { }

src/test/auxiliary/issue-2526.rs

@@ -13,8 +13,11 @@
 
 #![feature(unsafe_destructor)]
 
+use std::marker;
+
 struct arc_destruct<T> {
-  _data: int,
+    _data: int,
+    _marker: marker::PhantomData<T>
 }
 
 #[unsafe_destructor]
@@ -24,7 +27,8 @@ fn drop(&mut self) {}
 
 fn arc_destruct<T: Sync>(data: int) -> arc_destruct<T> {
     arc_destruct {
-        _data: data
+        _data: data,
+        _marker: marker::PhantomData
     }
 }
 

src/test/auxiliary/issue_20389.rs

@@ -10,4 +10,5 @@
 
 pub trait T {
     type C;
+    fn dummy(&self) { }
 }

src/test/auxiliary/issue_3907.rs

@@ -8,7 +8,9 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-pub trait Foo {
+use std::marker::MarkerTrait;
+
+pub trait Foo : MarkerTrait {
     fn bar();
 }
 

src/test/auxiliary/issue_8401.rs

@@ -12,7 +12,9 @@
 
 use std::mem;
 
-trait A {}
+trait A {
+    fn dummy(&self) { }
+}
 struct B;
 impl A for B {}
 

src/test/auxiliary/issue_9123.rs

@@ -15,5 +15,6 @@ fn x() {
         fn f() { }
         f();
     }
+    fn dummy(&self) { }
 }
 

src/test/auxiliary/lang-item-public.rs

@@ -12,8 +12,12 @@
 #![no_std]
 #![feature(lang_items)]
 
+#[lang="phantom_fn"]
+pub trait PhantomFn<A:?Sized,R:?Sized=()> { }
+impl<A:?Sized, R:?Sized, U:?Sized> PhantomFn<A,R> for U { }
+
 #[lang="sized"]
-pub trait Sized {}
+pub trait Sized : PhantomFn<Self> {}
 
 #[lang="panic"]
 fn panic(_: &(&'static str, &'static str, uint)) -> ! { loop {} }
@@ -25,6 +29,8 @@ fn panic(_: &(&'static str, &'static str, uint)) -> ! { loop {} }
 extern fn eh_personality() {}
 
 #[lang="copy"]
-pub trait Copy {}
+pub trait Copy : PhantomFn<Self> {
+    // Empty.
+}
 
 

src/test/auxiliary/lint_stability.rs

@@ -96,7 +96,7 @@ fn trait_stable_text(&self) {}
 impl Trait for MethodTester {}
 
 #[unstable(feature = "test_feature")]
-pub trait UnstableTrait {}
+pub trait UnstableTrait { fn dummy(&self) { } }
 
 #[stable(feature = "test_feature", since = "1.0.0")]
 #[deprecated(since = "1.0.0")]

src/test/auxiliary/nested_item.rs

@@ -25,7 +25,7 @@ pub fn foo<T>(&self) {
 }
 
 // issue 8134
-pub struct Parser<T>;
+pub struct Parser<T>(T);
 impl<T: std::iter::Iterator<Item=char>> Parser<T> {
     fn in_doctype(&mut self) {
         static DOCTYPEPattern: [char; 6] = ['O', 'C', 'T', 'Y', 'P', 'E'];

src/test/auxiliary/orphan_check_diagnostics.rs

@@ -8,4 +8,4 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-pub trait RemoteTrait {}
+pub trait RemoteTrait { fn dummy(&self) { } }

src/test/auxiliary/overloaded_autoderef_xc.rs

@@ -11,7 +11,8 @@
 use std::ops::Deref;
 
 struct DerefWithHelper<H, T> {
-    pub helper: H
+    pub helper: H,
+    pub value: Option<T>
 }
 
 trait Helper<T> {
@@ -34,6 +35,6 @@ fn deref(&self) -> &T {
 
 // Test cross-crate autoderef + vtable.
 pub fn check<T: PartialEq>(x: T, y: T) -> bool {
-    let d: DerefWithHelper<Option<T>, T> = DerefWithHelper { helper: Some(x) };
+    let d: DerefWithHelper<Option<T>, T> = DerefWithHelper { helper: Some(x), value: None };
     d.eq(&y)
 }

src/test/auxiliary/private_trait_xc.rs

@@ -8,4 +8,4 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-trait Foo {}
+trait Foo : ::std::marker::MarkerTrait {}

src/test/auxiliary/svh-a-base.rs

@@ -15,12 +15,14 @@
 
 #![crate_name = "a"]
 
+use std::marker::MarkerTrait;
+
 macro_rules! three {
     () => { 3 }
 }
 
-pub trait U {}
+pub trait U : MarkerTrait {}
-pub trait V {}
+pub trait V : MarkerTrait {}
 impl U for () {}
 impl V for () {}
 

src/test/auxiliary/svh-a-change-lit.rs

@@ -15,12 +15,14 @@
 
 #![crate_name = "a"]
 
+use std::marker::MarkerTrait;
+
 macro_rules! three {
     () => { 3 }
 }
 
-pub trait U {}
+pub trait U : MarkerTrait {}
-pub trait V {}
+pub trait V : MarkerTrait {}
 impl U for () {}
 impl V for () {}
 

src/test/auxiliary/svh-a-change-significant-cfg.rs

@@ -15,12 +15,14 @@
 
 #![crate_name = "a"]
 
+use std::marker::MarkerTrait;
+
 macro_rules! three {
     () => { 3 }
 }
 
-pub trait U {}
+pub trait U : MarkerTrait {}
-pub trait V {}
+pub trait V : MarkerTrait {}
 impl U for () {}
 impl V for () {}
 

src/test/auxiliary/svh-a-change-trait-bound.rs

@@ -15,12 +15,14 @@
 
 #![crate_name = "a"]
 
+use std::marker::MarkerTrait;
+
 macro_rules! three {
     () => { 3 }
 }
 
-pub trait U {}
+pub trait U : MarkerTrait {}
-pub trait V {}
+pub trait V : MarkerTrait {}
 impl U for () {}
 impl V for () {}
 

src/test/auxiliary/svh-a-change-type-arg.rs

@@ -15,12 +15,14 @@
 
 #![crate_name = "a"]
 
+use std::marker::MarkerTrait;
+
 macro_rules! three {
     () => { 3 }
 }
 
-pub trait U {}
+pub trait U : MarkerTrait {}
-pub trait V {}
+pub trait V : MarkerTrait {}
 impl U for () {}
 impl V for () {}
 

src/test/auxiliary/svh-a-change-type-ret.rs

@@ -15,12 +15,14 @@
 
 #![crate_name = "a"]
 
+use std::marker::MarkerTrait;
+
 macro_rules! three {
     () => { 3 }
 }
 
-pub trait U {}
+pub trait U : MarkerTrait {}
-pub trait V {}
+pub trait V : MarkerTrait {}
 impl U for () {}
 impl V for () {}
 

src/test/auxiliary/svh-a-change-type-static.rs

@@ -15,12 +15,14 @@
 
 #![crate_name = "a"]
 
+use std::marker::MarkerTrait;
+
 macro_rules! three {
     () => { 3 }
 }
 
-pub trait U {}
+pub trait U : MarkerTrait {}
-pub trait V {}
+pub trait V : MarkerTrait {}
 impl U for () {}
 impl V for () {}
 

src/test/auxiliary/svh-a-comment.rs

@@ -15,12 +15,14 @@
 
 #![crate_name = "a"]
 
+use std::marker::MarkerTrait;
+
 macro_rules! three {
     () => { 3 }
 }
 
-pub trait U {}
+pub trait U : MarkerTrait {}
-pub trait V {}
+pub trait V : MarkerTrait {}
 impl U for () {}
 impl V for () {}
 

src/test/auxiliary/svh-a-doc.rs

@@ -15,12 +15,14 @@
 
 #![crate_name = "a"]
 
+use std::marker::MarkerTrait;
+
 macro_rules! three {
     () => { 3 }
 }
 
-pub trait U {}
+pub trait U : MarkerTrait {}
-pub trait V {}
+pub trait V : MarkerTrait {}
 impl U for () {}
 impl V for () {}
 

src/test/auxiliary/svh-a-macro.rs

@@ -15,12 +15,14 @@
 
 #![crate_name = "a"]
 
+use std::marker::MarkerTrait;
+
 macro_rules! three {
     () => { 3 }
 }
 
-pub trait U {}
+pub trait U : MarkerTrait {}
-pub trait V {}
+pub trait V : MarkerTrait {}
 impl U for () {}
 impl V for () {}
 

src/test/auxiliary/svh-a-no-change.rs

@@ -15,12 +15,14 @@
 
 #![crate_name = "a"]
 
+use std::marker::MarkerTrait;
+
 macro_rules! three {
     () => { 3 }
 }
 
-pub trait U {}
+pub trait U : MarkerTrait {}
-pub trait V {}
+pub trait V : MarkerTrait {}
 impl U for () {}
 impl V for () {}
 

src/test/auxiliary/svh-a-redundant-cfg.rs

@@ -15,12 +15,14 @@
 
 #![crate_name = "a"]
 
+use std::marker::MarkerTrait;
+
 macro_rules! three {
     () => { 3 }
 }
 
-pub trait U {}
+pub trait U : MarkerTrait {}
-pub trait V {}
+pub trait V : MarkerTrait {}
 impl U for () {}
 impl V for () {}
 

src/test/auxiliary/svh-a-whitespace.rs

@@ -15,12 +15,14 @@
 
 #![crate_name = "a"]
 
+use std::marker::MarkerTrait;
+
 macro_rules! three {
     () => { 3 }
 }
 
-pub trait U {}
+pub trait U : MarkerTrait {}
-pub trait V {}
+pub trait V : MarkerTrait {}
 impl U for () {}
 impl V for () {}
 

src/test/auxiliary/trait_bounds_on_structs_and_enums_xc.rs

@@ -8,7 +8,9 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-pub trait Trait {}
+pub trait Trait {
+    fn dummy(&self) { }
+}
 
 pub struct Foo<T:Trait> {
     pub x: T,

src/test/auxiliary/trait_impl_conflict.rs

@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-pub trait Foo {
+pub trait Foo : ::std::marker::MarkerTrait {
 }
 
 impl Foo for int {

src/test/auxiliary/use_from_trait_xc.rs

@@ -11,7 +11,7 @@
 pub use self::sub::{Bar, Baz};
 
 pub trait Trait {
-    fn foo();
+    fn foo(&self);
 }
 
 struct Foo;

src/test/compile-fail/associated-types-ICE-when-projecting-out-of-err.rs

@@ -16,8 +16,12 @@
 #![feature(no_std)]
 #![no_std]
 
+#[lang="phantom_fn"]
+pub trait PhantomFn<A:?Sized,R:?Sized=()> { }
+impl<A:?Sized, R:?Sized, U:?Sized> PhantomFn<A,R> for U { }
+
 #[lang="sized"]
-pub trait Sized {
+pub trait Sized : PhantomFn<Self> {
     // Empty.
 }
 

src/test/compile-fail/associated-types-coherence-failure.rs

@@ -11,9 +11,10 @@
 // Test that coherence detects overlap when some of the types in the
 // impls are projections of associated type. Issue #20624.
 
+use std::marker::PhantomData;
 use std::ops::Deref;
 
-pub struct Cow<'a, B: ?Sized>;
+pub struct Cow<'a, B: ?Sized>(PhantomData<(&'a (),B)>);
 
 /// Trait for moving into a `Cow`
 pub trait IntoCow<'a, B: ?Sized> {

src/test/compile-fail/associated-types-eq-expr-path.rs

@@ -10,7 +10,7 @@
 
 // Check that an associated type cannot be bound in an expression path.
 
-trait Foo {
+trait Foo : ::std::marker::MarkerTrait {
     type A;
     fn bar() -> isize;
 }

src/test/compile-fail/associated-types-issue-17359.rs

@@ -11,7 +11,7 @@
 // Test that we do not ICE when an impl is missing an associated type (and that we report
 // a useful error, of course).
 
-trait Trait {
+trait Trait : ::std::marker::MarkerTrait {
     type Type;
 }
 

src/test/compile-fail/associated-types-multiple-types-one-trait.rs

@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-trait Foo {
+trait Foo : ::std::marker::MarkerTrait {
     type X;
     type Y;
 }

src/test/compile-fail/associated-types-no-suitable-supertrait.rs

@@ -11,7 +11,7 @@
 // Check that we get an error when you use `<Self as Get>::Value` in
 // the trait definition but `Self` does not, in fact, implement `Get`.
 
-trait Get {
+trait Get : ::std::marker::MarkerTrait {
     type Value;
 }
 

src/test/compile-fail/associated-types-path-2.rs

@@ -12,6 +12,8 @@
 
 pub trait Foo {
     type A;
+
+    fn dummy(&self) { }
 }
 
 impl Foo for i32 {

src/test/compile-fail/associated-types-unconstrained.rs

@@ -10,7 +10,7 @@
 
 // Check that an associated type cannot be bound in an expression path.
 
-trait Foo {
+trait Foo : ::std::marker::MarkerTrait {
     type A;
     fn bar() -> isize;
 }

src/test/compile-fail/bad-mid-path-type-params.rs

@@ -10,13 +10,6 @@
 
 // ignore-tidy-linelength
 
-#![feature(no_std)]
-#![no_std]
-#![feature(lang_items)]
-
-#[lang="sized"]
-pub trait Sized {}
-
 struct S<T> {
     contents: T,
 }

src/test/compile-fail/bad-sized.rs

@@ -12,7 +12,7 @@
 
 use std::cell::RefCell;
 
-trait Trait {}
+trait Trait : ::std::marker::MarkerTrait {}
 
 pub fn main() {
     let x: Vec<Trait + Sized> = Vec::new();

src/test/compile-fail/coherence-blanket-conflicts-with-blanket-implemented.rs

@@ -10,6 +10,7 @@
 
 use std::fmt::Show;
 use std::default::Default;
+use std::marker::MarkerTrait;
 
 // Test that two blanket impls conflict (at least without negative
 // bounds).  After all, some other crate could implement Even or Odd
@@ -19,9 +20,9 @@ trait MyTrait {
     fn get(&self) -> usize;
 }
 
-trait Even { }
+trait Even : MarkerTrait { }
 
-trait Odd { }
+trait Odd : MarkerTrait { }
 
 impl Even for isize { }
 

src/test/compile-fail/coherence-blanket-conflicts-with-blanket-unimplemented.rs

@@ -19,9 +19,9 @@ trait MyTrait {
     fn get(&self) -> usize;
 }
 
-trait Even { }
+trait Even : ::std::marker::MarkerTrait { }
 
-trait Odd { }
+trait Odd : ::std::marker::MarkerTrait { }
 
 impl<T:Even> MyTrait for T { //~ ERROR E0119
     fn get(&self) -> usize { 0 }

src/test/compile-fail/coherence-conflicting-negative-trait-impl.rs

@@ -10,18 +10,18 @@
 
 #![feature(optin_builtin_traits)]
 
-trait MyTrait {}
+trait MyTrait : ::std::marker::MarkerTrait {}
 
-struct TestType<T>;
+struct TestType<T>(::std::marker::PhantomData<T>);
 
-unsafe impl<T: MyTrait> Send for TestType<T> {}
+unsafe impl<T: MyTrait+'static> Send for TestType<T> {}
 //~^ ERROR conflicting implementations for trait `core::marker::Send`
 //~^^ ERROR conflicting implementations for trait `core::marker::Send`
 
 impl<T: MyTrait> !Send for TestType<T> {}
 //~^ ERROR conflicting implementations for trait `core::marker::Send`
 
-unsafe impl<T> Send for TestType<T> {}
+unsafe impl<T:'static> Send for TestType<T> {}
 //~^ ERROR error: conflicting implementations for trait `core::marker::Send`
 
 impl !Send for TestType<i32> {}

src/test/compile-fail/cross-borrow-trait.rs

@@ -14,7 +14,7 @@
 #![feature(box_syntax)]
 
 struct Foo;
-trait Trait {}
+trait Trait : ::std::marker::MarkerTrait {}
 impl Trait for Foo {}
 
 pub fn main() {

src/test/compile-fail/destructure-trait-ref.rs

@@ -14,7 +14,7 @@
 #![feature(box_patterns)]
 #![feature(box_syntax)]
 
-trait T {}
+trait T : ::std::marker::MarkerTrait {}
 impl T for isize {}
 
 fn main() {

src/test/compile-fail/dst-bad-coerce1.rs

@@ -15,7 +15,7 @@ struct Fat<T: ?Sized> {
 }
 
 struct Foo;
-trait Bar {}
+trait Bar : ::std::marker::MarkerTrait {}
 
 pub fn main() {
     // With a vec of isize.

src/test/compile-fail/dst-bad-coerce2.rs

@@ -15,7 +15,7 @@ struct Fat<T: ?Sized> {
 }
 
 struct Foo;
-trait Bar {}
+trait Bar : ::std::marker::MarkerTrait {}
 impl Bar for Foo {}
 
 pub fn main() {

src/test/compile-fail/dst-bad-coerce3.rs

@@ -15,7 +15,7 @@ struct Fat<T: ?Sized> {
 }
 
 struct Foo;
-trait Bar {}
+trait Bar : ::std::marker::MarkerTrait {}
 impl Bar for Foo {}
 
 fn baz<'a>() {

src/test/compile-fail/dst-bad-coercions.rs

@@ -10,8 +10,10 @@
 
 // Test implicit coercions involving DSTs and raw pointers.
 
+use std::marker::MarkerTrait;
+
 struct S;
-trait T {}
+trait T : MarkerTrait {}
 impl T for S {}
 
 struct Foo<T: ?Sized> {

src/test/compile-fail/dst-object-from-unsized-type.rs

@@ -10,7 +10,7 @@
 
 // Test that we cannot create objects from unsized types.
 
-trait Foo {}
+trait Foo : ::std::marker::MarkerTrait {}
 impl Foo for str {}
 
 fn test1<T: ?Sized + Foo>(t: &T) {

src/test/compile-fail/exclusive-drop-and-copy.rs

@@ -20,7 +20,7 @@ fn drop(&mut self) {}
 }
 
 #[derive(Copy)] //~ ERROR the trait `Copy` may not be implemented
-struct Bar<T>;
+struct Bar<T>(::std::marker::PhantomData<T>);
 
 #[unsafe_destructor]
 impl<T> Drop for Bar<T> {

src/test/compile-fail/generic-impl-less-params-with-defaults.rs

@@ -8,10 +8,13 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-struct Foo<A, B, C = (A, B)>;
+use std::marker;
+
+struct Foo<A, B, C = (A, B)>(
+    marker::PhantomData<(A,B,C)>);
 
 impl<A, B, C = (A, B)> Foo<A, B, C> {
-    fn new() -> Foo<A, B, C> {Foo}
+    fn new() -> Foo<A, B, C> {Foo(marker::PhantomData)}
 }
 
 fn main() {

src/test/compile-fail/generic-impl-more-params-with-defaults.rs

@@ -8,12 +8,15 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+use std::marker;
+
 struct Heap;
 
-struct Vec<T, A = Heap>;
+struct Vec<T, A = Heap>(
+    marker::PhantomData<(T,A)>);
 
 impl<T, A = Heap> Vec<T, A> {
-    fn new() -> Vec<T, A> {Vec}
+    fn new() -> Vec<T, A> {Vec(marker::PhantomData)}
 }
 
 fn main() {

src/test/compile-fail/generic-lifetime-trait-impl.rs

@@ -16,9 +16,12 @@
 //
 // Regression test for issue #16218.
 
-trait Bar<'a> {}
+trait Bar<'a> {
+    fn dummy(&'a self);
+}
 
 trait Foo<'a> {
+    fn dummy(&'a self) { }
     fn bar<'b, T: Bar<'b>>(self) -> &'b str;
 }
 

src/test/compile-fail/generic-type-less-params-with-defaults.rs

@@ -8,9 +8,12 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+use std::marker;
+
 struct Heap;
 
-struct Vec<T, A = Heap>;
+struct Vec<T, A = Heap>(
+    marker::PhantomData<(T,A)>);
 
 fn main() {
     let _: Vec; //~ ERROR wrong number of type arguments: expected at least 1, found 0

src/test/compile-fail/generic-type-more-params-with-defaults.rs

@@ -8,9 +8,12 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+use std::marker;
+
 struct Heap;
 
-struct Vec<T, A = Heap>;
+struct Vec<T, A = Heap>(
+    marker::PhantomData<(T,A)>);
 
 fn main() {
     let _: Vec<isize, Heap, bool>;

src/test/compile-fail/generic-type-params-name-repr.rs

@@ -8,13 +8,15 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+use std::marker;
+
 struct A;
 struct B;
 struct C;
-struct Foo<T = A, U = B, V = C>;
+struct Foo<T = A, U = B, V = C>(marker::PhantomData<(T,U,V)>);
 
-struct Hash<T>;
+struct Hash<T>(marker::PhantomData<T>);
-struct HashMap<K, V, H = Hash<K>>;
+struct HashMap<K, V, H = Hash<K>>(marker::PhantomData<(K,V,H)>);
 
 fn main() {
     // Ensure that the printed type doesn't include the default type params...

src/test/compile-fail/issue-11515.rs

@@ -10,7 +10,7 @@
 
 #![feature(box_syntax)]
 
-struct Test<'s> {
+struct Test {
     func: Box<FnMut()+'static>
 }
 

src/test/compile-fail/issue-13853-2.rs

@@ -8,7 +8,9 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-trait FromStructReader<'a> { }
+use std::marker::PhantomFn;
+
+trait FromStructReader<'a> : PhantomFn<(Self,&'a ())> { }
 trait ResponseHook {
      fn get<'a, T: FromStructReader<'a>>(&'a self);
 }

src/test/compile-fail/issue-13853-3.rs

@@ -10,6 +10,8 @@
 
 #![crate_type = "lib"]
 
+use std::marker::PhantomData;
+
 enum NodeContents<'a> {
     Children(Vec<Node<'a>>),
 }
@@ -22,11 +24,12 @@ fn drop( &mut self ) {
 
 struct Node<'a> {
     contents: NodeContents<'a>,
+    marker: PhantomData<&'a ()>,
 }
 
 impl<'a> Node<'a> {
     fn noName(contents: NodeContents<'a>) -> Node<'a> {
-        Node{  contents: contents,}
+        Node { contents: contents, marker: PhantomData }
     }
 }
 

src/test/compile-fail/issue-13853.rs

@@ -8,7 +8,9 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-trait Node {
+use std::marker::MarkerTrait;
+
+trait Node : MarkerTrait {
     fn zomg();
 }
 

src/test/compile-fail/issue-14285.rs

@@ -8,7 +8,9 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-trait Foo {}
+trait Foo {
+    fn dummy(&self) { }
+}
 
 struct A;
 

src/test/compile-fail/issue-14853.rs

@@ -9,8 +9,9 @@
 // except according to those terms.
 
 use std::fmt::Debug;
+use std::marker::MarkerTrait;
 
-trait Str {}
+trait Str : MarkerTrait {}
 
 trait Something {
     fn yay<T: Debug>(_: Option<Self>, thing: &[T]);

src/test/compile-fail/issue-16747.rs

@@ -8,7 +8,9 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-trait ListItem<'a> {
+use std::marker::MarkerTrait;
+
+trait ListItem<'a> : MarkerTrait {
     fn list_name() -> &'a str;
 }
 

src/test/compile-fail/issue-17431-4.rs

@@ -8,7 +8,9 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-struct Foo<T> { foo: Option<Option<Foo<T>>> }
+use std::marker;
+
+struct Foo<T> { foo: Option<Option<Foo<T>>>, marker: marker::PhantomData<T> }
 //~^ ERROR illegal recursive struct type; wrap the inner value in a box to make it representable
 
 impl<T> Foo<T> { fn bar(&self) {} }

src/test/compile-fail/issue-17431-5.rs

@@ -8,8 +8,10 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+use std::marker;
+
 struct Foo { foo: Bar<Foo> }
-struct Bar<T> { x: Bar<Foo> }
+struct Bar<T> { x: Bar<Foo> , marker: marker::PhantomData<T> }
 //~^ ERROR illegal recursive struct type; wrap the inner value in a box to make it representable
 
 impl Foo { fn foo(&self) {} }

src/test/compile-fail/issue-17551.rs

@@ -10,9 +10,11 @@
 
 #![feature(unboxed_closures)]
 
-struct B<T>;
+use std::marker;
+
+struct B<T>(marker::PhantomData<T>);
 
 fn main() {
-    let foo = B; //~ ERROR: unable to infer enough type information
+    let foo = B(marker::PhantomData); //~ ERROR unable to infer enough type information
     let closure = || foo;
 }

src/test/compile-fail/issue-18107.rs

@@ -8,9 +8,9 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+use std::marker::MarkerTrait;
 
-
+pub trait AbstractRenderer : MarkerTrait {}
-pub trait AbstractRenderer {}
 
 fn _create_render(_: &()) ->
     AbstractRenderer

src/test/compile-fail/issue-18611.rs

@@ -8,11 +8,13 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+use std::marker::MarkerTrait;
+
 fn add_state(op: <isize as HasState>::State) {
 //~^ ERROR the trait `HasState` is not implemented for the type `isize`
 }
 
-trait HasState {
+trait HasState : MarkerTrait {
     type State;
 }
 

src/test/compile-fail/issue-18783.rs

@@ -26,6 +26,7 @@ fn ufcs() {
 
     Push::push(&c, box || y = 0);
     Push::push(&c, box || y = 0);
+//~^ ERROR cannot borrow `y` as mutable more than once at a time
 }
 
 trait Push<'c> {

src/test/compile-fail/issue-18819.rs

@@ -8,7 +8,9 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-trait Foo {
+use std::marker::MarkerTrait;
+
+trait Foo : MarkerTrait {
     type Item;
 }
 

src/test/compile-fail/issue-19660.rs

@@ -13,8 +13,12 @@
 #![feature(lang_items, start, no_std)]
 #![no_std]
 
+#[lang="phantom_fn"]
+trait PhantomFn<A:?Sized,R:?Sized=()> { }
+impl<A:?Sized, R:?Sized, U:?Sized> PhantomFn<A,R> for U { }
+
 #[lang = "sized"]
-trait Sized {}
+trait Sized : PhantomFn<Self> {}
 
 #[start]
 fn main(_: int, _: *const *const u8) -> int {

src/test/compile-fail/issue-2063.rs

@@ -12,10 +12,11 @@
 // cause compiler to loop.  Note that no instances
 // of such a type could ever be constructed.
 
+use std::marker::MarkerTrait;
 
 struct t(Box<t>); //~ ERROR this type cannot be instantiated
 
-trait to_str_2 {
+trait to_str_2 : MarkerTrait {
     fn my_to_string() -> String;
 }
 

src/test/compile-fail/issue-20831-debruijn.rs

@@ -13,10 +13,11 @@
 // below. Note that changing to a named lifetime made the problem go
 // away.
 
-use std::ops::{Shl, Shr};
 use std::cell::RefCell;
+use std::marker::MarkerTrait;
+use std::ops::{Shl, Shr};
 
-pub trait Subscriber {
+pub trait Subscriber : MarkerTrait {
     type Input;
 }
 

src/test/compile-fail/issue-2611-4.rs

@@ -12,7 +12,7 @@
 // than the trait method it's implementing
 
 trait A {
-  fn b<C,D>(x: C) -> C;
+  fn b<C,D>(&self, x: C) -> C;
 }
 
 struct E {
@@ -20,7 +20,7 @@ struct E {
 }
 
 impl A for E {
-    fn b<F: Sync, G>(_x: F) -> F { panic!() }
+    fn b<F: Sync, G>(&self, _x: F) -> F { panic!() }
     //~^ ERROR `F : core::marker::Sync` appears on the impl method
 }
 

src/test/compile-fail/issue-3008-3.rs

@@ -8,8 +8,10 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+use std::marker;
+
 enum E1 { V1(E2<E1>), }
-enum E2<T> { V2(E2<E1>), }
+enum E2<T> { V2(E2<E1>, marker::PhantomData<T>), }
 //~^ ERROR illegal recursive enum type; wrap the inner value in a box to make it representable
 
 impl E1 { fn foo(&self) {} }

src/test/compile-fail/issue-4972.rs

@@ -11,7 +11,9 @@
 #![feature(box_patterns)]
 #![feature(box_syntax)]
 
-trait MyTrait { }
+trait MyTrait {
+    fn dummy(&self) {}
+}
 
 pub enum TraitWrapper {
     A(Box<MyTrait+'static>),

src/test/compile-fail/issue-5035-2.rs

@@ -8,7 +8,9 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-trait I {}
+use std::marker::MarkerTrait;
+
+trait I : MarkerTrait {}
 type K = I+'static;
 
 fn foo(_x: K) {} //~ ERROR: the trait `core::marker::Sized` is not implemented

src/test/compile-fail/issue-5543.rs

@@ -10,7 +10,9 @@
 
 #![feature(box_syntax)]
 
-trait Foo {}
+use std::marker::MarkerTrait;
+
+trait Foo : MarkerTrait {}
 impl Foo for u8 {}
 
 fn main() {

src/test/compile-fail/issue-5883.rs

@@ -8,7 +8,9 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-trait A {}
+use std::marker::MarkerTrait;
+
+trait A : MarkerTrait {}
 
 struct Struct {
     r: A+'static
@@ -20,6 +22,6 @@ fn new_struct(r: A+'static)
     Struct { r: r }
 }
 
-trait Curve {}
+trait Curve : MarkerTrait {}
 enum E {X(Curve+'static)}
 fn main() {}

src/test/compile-fail/issue-6458.rs

@@ -8,13 +8,15 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-pub struct TypeWithState<State>;
+use std::marker;
+
+pub struct TypeWithState<State>(marker::PhantomData<State>);
 pub struct MyState;
 
 pub fn foo<State>(_: TypeWithState<State>) {}
 
 pub fn bar() {
-   foo(TypeWithState);  //~ ERROR type annotations required
+   foo(TypeWithState(marker::PhantomData));  //~ ERROR type annotations required
 }
 
 fn main() {

src/test/compile-fail/issue-7575.rs

@@ -10,12 +10,14 @@
 
 // Test the mechanism for warning about possible missing `self` declarations.
 
+use std::marker::MarkerTrait;
+
 trait CtxtFn {
     fn f8(self, usize) -> usize;
     fn f9(usize) -> usize; //~ NOTE candidate
 }
 
-trait OtherTrait {
+trait OtherTrait : MarkerTrait {
     fn f9(usize) -> usize; //~ NOTE candidate
 }
 
@@ -24,7 +26,7 @@ trait OtherTrait {
 // declaration to match against, so we wind up prisizeing it as a
 // candidate. This seems not unreasonable -- perhaps the user meant to
 // implement it, after all.
-trait UnusedTrait {
+trait UnusedTrait : MarkerTrait {
     fn f9(usize) -> usize; //~ NOTE candidate
 }
 
@@ -52,7 +54,7 @@ fn fff(i: isize) -> isize { //~ NOTE candidate
     }
 }
 
-trait ManyImplTrait {
+trait ManyImplTrait : MarkerTrait {
     fn is_str() -> bool { //~ NOTE candidate
         false
     }

src/test/compile-fail/issue-8727.rs

@@ -13,16 +13,12 @@
 // Verify the compiler fails with an error on infinite function
 // recursions.
 
-struct Data(Box<Option<Data>>);
+fn generic<T>() {
-
+    generic::<Option<T>>();
-fn generic<T>( _ : Vec<(Data,T)> ) {
-    let rec : Vec<(Data,(bool,T))> = Vec::new();
-    generic( rec );
 }
 
 
 fn main () {
     // Use generic<T> at least once to trigger instantiation.
-    let input : Vec<(Data,())> = Vec::new();
+    generic::<i32>();
-    generic(input);
 }

src/test/compile-fail/kindck-copy.rs

@@ -10,12 +10,12 @@
 
 // Test which of the builtin types are considered POD.
 
-
+use std::marker::MarkerTrait;
 use std::rc::Rc;
 
 fn assert_copy<T:Copy>() { }
 
-trait Dummy { }
+trait Dummy : MarkerTrait { }
 
 #[derive(Copy)]
 struct MyStruct {

src/test/compile-fail/kindck-impl-type-params-2.rs

@@ -10,7 +10,9 @@
 
 #![feature(box_syntax)]
 
-trait Foo {
+use std::marker::MarkerTrait;
+
+trait Foo : MarkerTrait {
 }
 
 impl<T:Copy> Foo for T {

src/test/compile-fail/kindck-impl-type-params.rs

@@ -13,40 +13,44 @@
 
 #![feature(box_syntax)]
 
-struct S<T>;
+use std::marker;
 
-trait Gettable<T> {}
+struct S<T>(marker::PhantomData<T>);
+
+trait Gettable<T> {
+    fn get(&self) -> T { panic!() }
+}
 
 impl<T: Send + Copy + 'static> Gettable<T> for S<T> {}
 
 fn f<T>(val: T) {
-    let t: S<T> = S;
+    let t: S<T> = S(marker::PhantomData);
     let a = &t as &Gettable<T>;
     //~^ ERROR the trait `core::marker::Send` is not implemented
     //~^^ ERROR the trait `core::marker::Copy` is not implemented
 }
 
 fn g<T>(val: T) {
-    let t: S<T> = S;
+    let t: S<T> = S(marker::PhantomData);
     let a: &Gettable<T> = &t;
     //~^ ERROR the trait `core::marker::Send` is not implemented
     //~^^ ERROR the trait `core::marker::Copy` is not implemented
 }
 
 fn foo<'a>() {
-    let t: S<&'a isize> = S;
+    let t: S<&'a isize> = S(marker::PhantomData);
     let a = &t as &Gettable<&'a isize>;
-    //~^ ERROR the type `&'a isize` does not fulfill the required lifetime
+    //~^ ERROR cannot infer
 }
 
 fn foo2<'a>() {
-    let t: Box<S<String>> = box S;
+    let t: Box<S<String>> = box S(marker::PhantomData);
     let a = t as Box<Gettable<String>>;
     //~^ ERROR the trait `core::marker::Copy` is not implemented
 }
 
 fn foo3<'a>() {
-    let t: Box<S<String>> = box S;
+    let t: Box<S<String>> = box S(marker::PhantomData);
     let a: Box<Gettable<String>> = t;
     //~^ ERROR the trait `core::marker::Copy` is not implemented
 }

src/test/compile-fail/kindck-send-object.rs

@@ -12,8 +12,10 @@
 // in this file all test the "kind" violates detected during kindck.
 // See all `regions-bounded-by-send.rs`
 
+use std::marker::MarkerTrait;
+
 fn assert_send<T:Send>() { }
-trait Dummy { }
+trait Dummy : MarkerTrait { }
 trait Message : Send { }
 
 // careful with object types, who knows what they close over...

src/test/compile-fail/kindck-send-object1.rs

@@ -12,8 +12,10 @@
 // is broken into two parts because some errors occur in distinct
 // phases in the compiler. See kindck-send-object2.rs as well!
 
+use std::marker::MarkerTrait;
+
 fn assert_send<T:Send+'static>() { }
-trait Dummy { }
+trait Dummy : MarkerTrait { }
 
 // careful with object types, who knows what they close over...
 fn test51<'a>() {

src/test/compile-fail/kindck-send-object2.rs

@@ -10,8 +10,10 @@
 
 // Continue kindck-send-object1.rs.
 
+use std::marker::MarkerTrait;
+
 fn assert_send<T:Send>() { }
-trait Dummy { }
+trait Dummy : MarkerTrait { }
 
 fn test50() {
     assert_send::<&'static Dummy>(); //~ ERROR the trait `core::marker::Sync` is not implemented

src/test/compile-fail/lifetime-inference-give-expl-lifetime-param-3.rs

@@ -10,7 +10,9 @@
 
 // ignore-tidy-linelength
 
-struct Bar<'x, 'y, 'z> { bar: &'y i32, baz: i32 }
+use std::marker::PhantomData;
+
+struct Bar<'x, 'y, 'z> { bar: &'y i32, baz: i32, marker: PhantomData<(&'x(),&'y(),&'z())> }
 fn bar1<'a>(x: &Bar) -> (&'a i32, &'a i32, &'a i32) {
 //~^ HELP: consider using an explicit lifetime parameter as shown: fn bar1<'b, 'c, 'a>(x: &'a Bar<'b, 'a, 'c>) -> (&'a i32, &'a i32, &'a i32)
     (x.bar, &x.baz, &x.baz)

src/test/compile-fail/lifetime-inference-give-expl-lifetime-param.rs

@@ -10,7 +10,9 @@
 
 // ignore-tidy-linelength
 
-struct Foo<'x> { bar: isize }
+use std::marker::PhantomData;
+
+struct Foo<'x> { bar: isize, marker: PhantomData<&'x ()> }
 fn foo1<'a>(x: &Foo) -> &'a isize {
 //~^ HELP: consider using an explicit lifetime parameter as shown: fn foo1<'a>(x: &'a Foo) -> &'a isize
     &x.bar //~ ERROR: cannot infer

src/test/compile-fail/lint-missing-doc.rs

@@ -47,20 +47,26 @@ fn foo3() {}
 /// dox
 pub trait A {
     /// dox
-    fn foo();
+    fn foo(&self);
     /// dox
-    fn foo_with_impl() {}
+    fn foo_with_impl(&self) {}
 }
+
 #[allow(missing_docs)]
 trait B {
-    fn foo();
+    fn foo(&self);
-    fn foo_with_impl() {}
+    fn foo_with_impl(&self) {}
 }
+
 pub trait C { //~ ERROR: missing documentation
-    fn foo(); //~ ERROR: missing documentation
+    fn foo(&self); //~ ERROR: missing documentation
-    fn foo_with_impl() {} //~ ERROR: missing documentation
+    fn foo_with_impl(&self) {} //~ ERROR: missing documentation
+}
+
+#[allow(missing_docs)]
+pub trait D {
+    fn dummy(&self) { }
 }
-#[allow(missing_docs)] pub trait D {}
 
 impl Foo {
     pub fn foo() {}

src/test/compile-fail/lint-non-camel-case-types.rs

@@ -30,6 +30,7 @@ enum Foo5 {
 }
 
 trait foo6 { //~ ERROR trait `foo6` should have a camel case name such as `Foo6`
+    fn dummy(&self) { }
 }
 
 fn f<ty>(_: ty) {} //~ ERROR type parameter `ty` should have a camel case name such as `Ty`

src/test/compile-fail/lint-stability.rs

@@ -341,7 +341,9 @@ fn fn_in_body() {}
 
     #[unstable(feature = "test_feature")]
     #[deprecated(since = "1.0.0")]
-    pub trait DeprecatedTrait {}
+    pub trait DeprecatedTrait {
+        fn dummy(&self) { }
+    }
 
     struct S;
 

src/test/compile-fail/lint-visible-private-types.rs

@@ -12,8 +12,10 @@
 #![allow(dead_code)]
 #![crate_type="lib"]
 
-struct Private<T>;
+use std::marker;
-pub struct Public<T>;
+
+struct Private<T>(marker::PhantomData<T>);
+pub struct Public<T>(marker::PhantomData<T>);
 
 impl Private<Public<isize>> {
     pub fn a(&self) -> Private<isize> { panic!() }
@@ -103,7 +105,7 @@ impl PrivTrait for (Private<isize>,) {
     fn bar(&self) -> Private<isize> { panic!() }
 }
 
-pub trait ParamTrait<T> {
+pub trait ParamTrait<T> : marker::MarkerTrait {
     fn foo() -> T;
 }