diff --git a/src/test/run-pass/dst-raw.rs b/src/test/run-pass/dst-raw.rs
index 19af9fd7ea7..d3d2e3581aa 100644
--- a/src/test/run-pass/dst-raw.rs
+++ b/src/test/run-pass/dst-raw.rs
@@ -23,7 +23,7 @@ impl Trait for A {
     }
 }
 
-struct Foo<Sized? T> {
+struct Foo<T: ?Sized> {
     f: T
 }
 
diff --git a/src/test/run-pass/dst-struct-sole.rs b/src/test/run-pass/dst-struct-sole.rs
index 26cb27cc653..47547bb7e5a 100644
--- a/src/test/run-pass/dst-struct-sole.rs
+++ b/src/test/run-pass/dst-struct-sole.rs
@@ -10,7 +10,7 @@
 
 // As dst-struct.rs, but the unsized field is the only field in the struct.
 
-struct Fat<Sized? T> {
+struct Fat<T: ?Sized> {
     ptr: T
 }
 
diff --git a/src/test/run-pass/dst-struct.rs b/src/test/run-pass/dst-struct.rs
index 3644ca81d56..fb536904ac8 100644
--- a/src/test/run-pass/dst-struct.rs
+++ b/src/test/run-pass/dst-struct.rs
@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-struct Fat<Sized? T> {
+struct Fat<T: ?Sized> {
     f1: int,
     f2: &'static str,
     ptr: T
diff --git a/src/test/run-pass/dst-trait.rs b/src/test/run-pass/dst-trait.rs
index 907c7810736..abe55d78ac6 100644
--- a/src/test/run-pass/dst-trait.rs
+++ b/src/test/run-pass/dst-trait.rs
@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-struct Fat<Sized? T> {
+struct Fat<T: ?Sized> {
     f1: int,
     f2: &'static str,
     ptr: T
diff --git a/src/test/run-pass/issue-15155.rs b/src/test/run-pass/issue-15155.rs
index 053a4916e22..3a63e63355c 100644
--- a/src/test/run-pass/issue-15155.rs
+++ b/src/test/run-pass/issue-15155.rs
@@ -22,7 +22,7 @@ struct IndirectBlah { x: Box<IndirectTraitWithSend> }
 impl TraitWithSend for IndirectBlah {}
 impl IndirectTraitWithSend for IndirectBlah {}
 
-fn test_trait<Sized? T: Send>() { println!("got here!") }
+fn test_trait<T: Send + ?Sized>() { println!("got here!") }
 
 fn main() {
     test_trait::<TraitWithSend>();
diff --git a/src/test/run-pass/issue-17361.rs b/src/test/run-pass/issue-17361.rs
index fa38dcc1986..092bcf661a7 100644
--- a/src/test/run-pass/issue-17361.rs
+++ b/src/test/run-pass/issue-17361.rs
@@ -11,6 +11,6 @@
 // Test that astconv doesn't forget about mutability of &mut str
 
 fn main() {
-    fn foo<Sized? T>(_: &mut T) {}
+    fn foo<T: ?Sized>(_: &mut T) {}
     let _f: fn(&mut str) = foo;
 }
diff --git a/src/test/run-pass/method-recursive-blanket-impl.rs b/src/test/run-pass/method-recursive-blanket-impl.rs
index b45faca2de6..4e4fb75b428 100644
--- a/src/test/run-pass/method-recursive-blanket-impl.rs
+++ b/src/test/run-pass/method-recursive-blanket-impl.rs
@@ -16,7 +16,7 @@
 use std::kinds::Sized;
 
 // Note: this must be generic for the problem to show up
-trait Foo<A> for Sized? {
+trait Foo<A> for ?Sized {
     fn foo(&self);
 }
 
diff --git a/src/test/run-pass/unsized.rs b/src/test/run-pass/unsized.rs
index 141d6c88dd9..07b9fac6655 100644
--- a/src/test/run-pass/unsized.rs
+++ b/src/test/run-pass/unsized.rs
@@ -10,21 +10,22 @@
 //
 // ignore-lexer-test FIXME #15879
 
-// Test syntax checks for `Sized?` syntax.
+// Test syntax checks for `?Sized` syntax.
 
-trait T1 for Sized? {}
-pub trait T2 for Sized? {}
-trait T3<X: T1> for Sized?: T2 {}
-trait T4<Sized? X> {}
-trait T5<Sized? X, Y> {}
-trait T6<Y, Sized? X> {}
-trait T7<Sized? X, Sized? Y> {}
-trait T8<Sized? X: T2> {}
-struct S1<Sized? X>;
-enum E<Sized? X> {}
-impl <Sized? X> T1 for S1<X> {}
-fn f<Sized? X>() {}
-type TT<Sized? T> = T;
+trait T1 for ?Sized {}
+pub trait T2 for ?Sized {}
+trait T3<X: T1> for ?Sized: T2 {}
+trait T4<X: ?Sized> {}
+trait T5<X: ?Sized, Y> {}
+trait T6<Y, X: ?Sized> {}
+trait T7<X: ?Sized, Y: ?Sized> {}
+trait T8<X: ?Sized+T2> {}
+trait T9<X: T2 + ?Sized> {}
+struct S1<X: ?Sized>;
+enum E<X: ?Sized> {}
+impl <X: ?Sized> T1 for S1<X> {}
+fn f<X: ?Sized>() {}
+type TT<T: ?Sized> = T;
 
 pub fn main() {
 }
diff --git a/src/test/run-pass/unsized2.rs b/src/test/run-pass/unsized2.rs
index d28d47c0cfb..8d2c99d4414 100644
--- a/src/test/run-pass/unsized2.rs
+++ b/src/test/run-pass/unsized2.rs
@@ -13,7 +13,7 @@
 // Test sized-ness checking in substitution.
 
 // Unbounded.
-fn f1<Sized? X>(x: &X) {
+fn f1<X: ?Sized>(x: &X) {
     f1::<X>(x);
 }
 fn f2<X>(x: &X) {
@@ -22,8 +22,8 @@ fn f2<X>(x: &X) {
 }
 
 // Bounded.
-trait T for Sized? {}
-fn f3<Sized? X: T>(x: &X) {
+trait T for ?Sized {}
+fn f3<X: T+?Sized>(x: &X) {
     f3::<X>(x);
 }
 fn f4<X: T>(x: &X) {
@@ -32,7 +32,7 @@ fn f4<X: T>(x: &X) {
 }
 
 // Self type.
-trait T2 for Sized? {
+trait T2 for ?Sized {
     fn f() -> Box<Self>;
 }
 struct S;
@@ -41,14 +41,14 @@ impl T2 for S {
         box S
     }
 }
-fn f5<Sized? X: T2>(x: &X) {
+fn f5<X: ?Sized+T2>(x: &X) {
     let _: Box<X> = T2::f();
 }
 fn f6<X: T2>(x: &X) {
     let _: Box<X> = T2::f();
 }
 
-trait T3 for Sized? {
+trait T3 for ?Sized {
     fn f() -> Box<Self>;
 }
 impl T3 for S {
@@ -56,7 +56,7 @@ impl T3 for S {
         box S
     }
 }
-fn f7<Sized? X: T3>(x: &X) {
+fn f7<X: ?Sized+T3>(x: &X) {
     // This is valid, but the unsized bound on X is irrelevant because any type
     // which implements T3 must have statically known size.
     let _: Box<X> = T3::f();
@@ -66,7 +66,7 @@ trait T4<X> {
     fn m1(x: &T4<X>);
     fn m2(x: &T5<X>);
 }
-trait T5<Sized? X> {
+trait T5<X: ?Sized> {
     // not an error (for now)
     fn m1(x: &T4<X>);
     fn m2(x: &T5<X>);
@@ -76,21 +76,21 @@ trait T6<X: T> {
     fn m1(x: &T4<X>);
     fn m2(x: &T5<X>);
 }
-trait T7<Sized? X: T> {
+trait T7<X: ?Sized+T> {
     // not an error (for now)
     fn m1(x: &T4<X>);
     fn m2(x: &T5<X>);
 }
 
 // The last field in a struct or variant may be unsized
-struct S2<Sized? X> {
+struct S2<X: ?Sized> {
     f: X,
 }
-struct S3<Sized? X> {
+struct S3<X: ?Sized> {
     f1: int,
     f2: X,
 }
-enum E<Sized? X> {
+enum E<X: ?Sized> {
     V1(X),
     V2{x: X},
     V3(int, X),