update compile-fail tests; remove now redundant issue-39122.rs

It is subsumed by ui/param-bounds-ignored.rs.

Author: RalfJung

src/test/compile-fail/dst-bad-assign-3.rs

@@ -12,8 +12,7 @@
 
 #![feature(unsized_tuple_coercion)]
 
-type Fat<T: ?Sized> = (isize, &'static str, T);
-//~^ WARNING bounds are ignored
+type Fat<T> = (isize, &'static str, T);
 
 #[derive(PartialEq,Eq)]
 struct Bar;

src/test/compile-fail/issue-17994.rs

@@ -10,5 +10,5 @@
 
 trait Tr {}
 type Huh<T> where T: Tr = isize; //~  ERROR type parameter `T` is unused
-                                 //~| WARNING E0122
+                                 //~| WARNING where clauses are ignored in type aliases
 fn main() {}

src/test/compile-fail/issue-23046.rs

@@ -8,6 +8,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+#![allow(ignored_generic_bounds)]
+
 pub enum Expr<'var, VAR> {
     Let(Box<Expr<'var, VAR>>,
         Box<for<'v: 'var> Fn(Expr<'v, VAR>) -> Expr<'v, VAR> + 'var>)

src/test/compile-fail/issue-39122.rs

@@ -58,7 +58,7 @@ mod traits {
     pub trait PubTr {}
 
     pub type Alias<T: PrivTr> = T; //~ ERROR private trait `traits::PrivTr` in public interface
-    //~^ WARN bounds are ignored in type aliases
+    //~^ WARNING bounds on generic type parameters are ignored
     //~| WARNING hard error
     pub trait Tr1: PrivTr {} //~ ERROR private trait `traits::PrivTr` in public interface
     //~^ WARNING hard error
@@ -85,7 +85,7 @@ mod traits_where {
     pub type Alias<T> where T: PrivTr = T;
         //~^ ERROR private trait `traits_where::PrivTr` in public interface
         //~| WARNING hard error
-        //~| WARNING E0122
+        //~| WARNING where clauses are ignored in type aliases
     pub trait Tr2<T> where T: PrivTr {}
         //~^ ERROR private trait `traits_where::PrivTr` in public interface
         //~| WARNING hard error

src/test/compile-fail/private-in-public-warn.rs

@@ -22,7 +22,7 @@ static NON_ELIDABLE_FN: &fn(&u8, &u8) -> &u8 =
 struct SomeStruct<'x, 'y, 'z: 'x> {
     foo: &'x Foo<'z>,
     bar: &'x Bar<'z>,
-    f: &'y for<'a, 'b: 'a> Fn(&'a Foo<'b>) -> &'a Bar<'b>,
+    f: &'y for<'a, 'b> Fn(&'a Foo<'b>) -> &'a Bar<'b>,
 }
 
 fn id<T>(t: T) -> T {