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-rw-r--r--tests/ui/generic-associated-types/assume-gat-normalization-for-nested-goals.next.stderr2
-rw-r--r--tests/ui/impl-trait/nested_impl_trait.rs4
-rw-r--r--tests/ui/impl-trait/nested_impl_trait.stderr4
-rw-r--r--tests/ui/rfcs/rfc-2632-const-trait-impl/issue-100222.nn.stderr12
-rw-r--r--tests/ui/rfcs/rfc-2632-const-trait-impl/issue-100222.ny.stderr12
-rw-r--r--tests/ui/rfcs/rfc-2632-const-trait-impl/issue-100222.rs3
-rw-r--r--tests/ui/rfcs/rfc-2632-const-trait-impl/issue-100222.yn.stderr12
-rw-r--r--tests/ui/rfcs/rfc-2632-const-trait-impl/issue-100222.yy.stderr12
-rw-r--r--tests/ui/traits/next-solver/auto-with-drop_tracking_mir.fail.stderr4
-rw-r--r--tests/ui/traits/next-solver/typeck/receiver-self-ty-check-eq.rs23
-rw-r--r--tests/ui/type-alias-impl-trait/method_resolution3.current.stderr2
-rw-r--r--tests/ui/type-alias-impl-trait/method_resolution3.next.stderr18
-rw-r--r--tests/ui/type-alias-impl-trait/method_resolution3.rs6
-rw-r--r--tests/ui/type-alias-impl-trait/method_resolution4.current.stderr2
-rw-r--r--tests/ui/type-alias-impl-trait/method_resolution4.next.stderr18
-rw-r--r--tests/ui/type-alias-impl-trait/method_resolution4.rs6
16 files changed, 60 insertions, 80 deletions
diff --git a/tests/ui/generic-associated-types/assume-gat-normalization-for-nested-goals.next.stderr b/tests/ui/generic-associated-types/assume-gat-normalization-for-nested-goals.next.stderr
index 9b5d84b5b09..c5c4f2c4d23 100644
--- a/tests/ui/generic-associated-types/assume-gat-normalization-for-nested-goals.next.stderr
+++ b/tests/ui/generic-associated-types/assume-gat-normalization-for-nested-goals.next.stderr
@@ -1,4 +1,4 @@
-error[E0277]: the trait bound `i32: Baz<Self>` is not satisfied
+error[E0277]: the trait bound `<Self as Foo>::Bar<()>: Eq<i32>` is not satisfied
   --> $DIR/assume-gat-normalization-for-nested-goals.rs:9:30
    |
 LL |     type Bar<T>: Baz<Self> = i32;
diff --git a/tests/ui/impl-trait/nested_impl_trait.rs b/tests/ui/impl-trait/nested_impl_trait.rs
index 502b2af2bc6..760102794c3 100644
--- a/tests/ui/impl-trait/nested_impl_trait.rs
+++ b/tests/ui/impl-trait/nested_impl_trait.rs
@@ -5,7 +5,7 @@ fn fine(x: impl Into<u32>) -> impl Into<u32> { x }
 
 fn bad_in_ret_position(x: impl Into<u32>) -> impl Into<impl Debug> { x }
 //~^ ERROR nested `impl Trait` is not allowed
-//~| ERROR the trait bound `impl Into<u32>: Into<impl Debug>` is not satisfied
+//~| ERROR the trait bound `impl Debug: From<impl Into<u32>>` is not satisfied
 
 fn bad_in_fn_syntax(x: fn() -> impl Into<impl Debug>) {}
 //~^ ERROR nested `impl Trait` is not allowed
@@ -18,7 +18,7 @@ struct X;
 impl X {
     fn bad(x: impl Into<u32>) -> impl Into<impl Debug> { x }
     //~^ ERROR nested `impl Trait` is not allowed
-    //~| ERROR the trait bound `impl Into<u32>: Into<impl Debug>` is not satisfied
+    //~| ERROR the trait bound `impl Debug: From<impl Into<u32>>` is not satisfied
 }
 
 fn allowed_in_assoc_type() -> impl Iterator<Item=impl Fn()> {
diff --git a/tests/ui/impl-trait/nested_impl_trait.stderr b/tests/ui/impl-trait/nested_impl_trait.stderr
index a53312e5c0b..83d1347aff4 100644
--- a/tests/ui/impl-trait/nested_impl_trait.stderr
+++ b/tests/ui/impl-trait/nested_impl_trait.stderr
@@ -42,7 +42,7 @@ LL | fn bad_in_fn_syntax(x: fn() -> impl Into<impl Debug>) {}
    |
    = note: `impl Trait` is only allowed in arguments and return types of functions and methods
 
-error[E0277]: the trait bound `impl Into<u32>: Into<impl Debug>` is not satisfied
+error[E0277]: the trait bound `impl Debug: From<impl Into<u32>>` is not satisfied
   --> $DIR/nested_impl_trait.rs:6:46
    |
 LL | fn bad_in_ret_position(x: impl Into<u32>) -> impl Into<impl Debug> { x }
@@ -51,7 +51,7 @@ LL | fn bad_in_ret_position(x: impl Into<u32>) -> impl Into<impl Debug> { x }
    = help: the trait `Into<U>` is implemented for `T`
    = note: required for `impl Into<u32>` to implement `Into<impl Debug>`
 
-error[E0277]: the trait bound `impl Into<u32>: Into<impl Debug>` is not satisfied
+error[E0277]: the trait bound `impl Debug: From<impl Into<u32>>` is not satisfied
   --> $DIR/nested_impl_trait.rs:19:34
    |
 LL |     fn bad(x: impl Into<u32>) -> impl Into<impl Debug> { x }
diff --git a/tests/ui/rfcs/rfc-2632-const-trait-impl/issue-100222.nn.stderr b/tests/ui/rfcs/rfc-2632-const-trait-impl/issue-100222.nn.stderr
deleted file mode 100644
index 03536dca1e8..00000000000
--- a/tests/ui/rfcs/rfc-2632-const-trait-impl/issue-100222.nn.stderr
+++ /dev/null
@@ -1,12 +0,0 @@
-error[E0271]: type mismatch resolving `<() as Index>::Output == &mut <() as Index>::Output`
-  --> $DIR/issue-100222.rs:34:12
-   |
-LL |     fn foo(&mut self, x: <Self as Index>::Output) -> <Self as Index>::Output
-   |            ^^^^^^^^^ expected `()`, found `&mut <() as Index>::Output`
-   |
-   = note:      expected unit type `()`
-           found mutable reference `&mut <() as Index>::Output`
-
-error: aborting due to 1 previous error
-
-For more information about this error, try `rustc --explain E0271`.
diff --git a/tests/ui/rfcs/rfc-2632-const-trait-impl/issue-100222.ny.stderr b/tests/ui/rfcs/rfc-2632-const-trait-impl/issue-100222.ny.stderr
deleted file mode 100644
index 6a70a503606..00000000000
--- a/tests/ui/rfcs/rfc-2632-const-trait-impl/issue-100222.ny.stderr
+++ /dev/null
@@ -1,12 +0,0 @@
-error[E0271]: type mismatch resolving `<() as Index>::Output == &mut <() as Index>::Output`
-  --> $DIR/issue-100222.rs:25:12
-   |
-LL |     fn foo(&mut self, x: <Self as Index>::Output) -> <Self as Index>::Output
-   |            ^^^^^^^^^ expected `()`, found `&mut <() as Index>::Output`
-   |
-   = note:      expected unit type `()`
-           found mutable reference `&mut <() as Index>::Output`
-
-error: aborting due to 1 previous error
-
-For more information about this error, try `rustc --explain E0271`.
diff --git a/tests/ui/rfcs/rfc-2632-const-trait-impl/issue-100222.rs b/tests/ui/rfcs/rfc-2632-const-trait-impl/issue-100222.rs
index 7949772a2b4..47f9fc664ce 100644
--- a/tests/ui/rfcs/rfc-2632-const-trait-impl/issue-100222.rs
+++ b/tests/ui/rfcs/rfc-2632-const-trait-impl/issue-100222.rs
@@ -1,6 +1,7 @@
 //@ revisions: nn ny yn yy
-//@ known-bug: #110395
 //@ compile-flags: -Znext-solver
+//@ check-pass
+
 #![allow(incomplete_features)]
 #![feature(const_trait_impl, effects, associated_type_defaults, const_mut_refs)]
 
diff --git a/tests/ui/rfcs/rfc-2632-const-trait-impl/issue-100222.yn.stderr b/tests/ui/rfcs/rfc-2632-const-trait-impl/issue-100222.yn.stderr
deleted file mode 100644
index 03536dca1e8..00000000000
--- a/tests/ui/rfcs/rfc-2632-const-trait-impl/issue-100222.yn.stderr
+++ /dev/null
@@ -1,12 +0,0 @@
-error[E0271]: type mismatch resolving `<() as Index>::Output == &mut <() as Index>::Output`
-  --> $DIR/issue-100222.rs:34:12
-   |
-LL |     fn foo(&mut self, x: <Self as Index>::Output) -> <Self as Index>::Output
-   |            ^^^^^^^^^ expected `()`, found `&mut <() as Index>::Output`
-   |
-   = note:      expected unit type `()`
-           found mutable reference `&mut <() as Index>::Output`
-
-error: aborting due to 1 previous error
-
-For more information about this error, try `rustc --explain E0271`.
diff --git a/tests/ui/rfcs/rfc-2632-const-trait-impl/issue-100222.yy.stderr b/tests/ui/rfcs/rfc-2632-const-trait-impl/issue-100222.yy.stderr
deleted file mode 100644
index 6a70a503606..00000000000
--- a/tests/ui/rfcs/rfc-2632-const-trait-impl/issue-100222.yy.stderr
+++ /dev/null
@@ -1,12 +0,0 @@
-error[E0271]: type mismatch resolving `<() as Index>::Output == &mut <() as Index>::Output`
-  --> $DIR/issue-100222.rs:25:12
-   |
-LL |     fn foo(&mut self, x: <Self as Index>::Output) -> <Self as Index>::Output
-   |            ^^^^^^^^^ expected `()`, found `&mut <() as Index>::Output`
-   |
-   = note:      expected unit type `()`
-           found mutable reference `&mut <() as Index>::Output`
-
-error: aborting due to 1 previous error
-
-For more information about this error, try `rustc --explain E0271`.
diff --git a/tests/ui/traits/next-solver/auto-with-drop_tracking_mir.fail.stderr b/tests/ui/traits/next-solver/auto-with-drop_tracking_mir.fail.stderr
index e0b23bd8110..c2029a5a1c8 100644
--- a/tests/ui/traits/next-solver/auto-with-drop_tracking_mir.fail.stderr
+++ b/tests/ui/traits/next-solver/auto-with-drop_tracking_mir.fail.stderr
@@ -17,10 +17,6 @@ note: required by a bound in `is_send`
    |
 LL |     fn is_send(_: impl Send) {}
    |                        ^^^^ required by this bound in `is_send`
-help: consider dereferencing here
-   |
-LL |     is_send(*foo());
-   |             +
 
 error: aborting due to 1 previous error
 
diff --git a/tests/ui/traits/next-solver/typeck/receiver-self-ty-check-eq.rs b/tests/ui/traits/next-solver/typeck/receiver-self-ty-check-eq.rs
new file mode 100644
index 00000000000..f8c8a17b7e5
--- /dev/null
+++ b/tests/ui/traits/next-solver/typeck/receiver-self-ty-check-eq.rs
@@ -0,0 +1,23 @@
+//@ compile-flags: -Znext-solver
+//@ check-pass
+
+// Fixes a regression in `receiver_is_valid` in wfcheck where we were using
+// `InferCtxt::can_eq` instead of processing alias-relate goals, leading to false
+// positives, not deref'ing enough steps to check the receiver is valid.
+
+trait Mirror {
+    type Mirror: ?Sized;
+}
+impl<T: ?Sized> Mirror for T {
+    type Mirror = T;
+}
+
+trait Foo {
+    fn foo(&self) {}
+}
+
+impl Foo for <() as Mirror>::Mirror {
+    fn foo(&self) {}
+}
+
+fn main() {}
diff --git a/tests/ui/type-alias-impl-trait/method_resolution3.current.stderr b/tests/ui/type-alias-impl-trait/method_resolution3.current.stderr
index e992d059daf..09efd7a9e7e 100644
--- a/tests/ui/type-alias-impl-trait/method_resolution3.current.stderr
+++ b/tests/ui/type-alias-impl-trait/method_resolution3.current.stderr
@@ -8,7 +8,7 @@ LL |     fn bar(self: Bar<u32>) {
    = help: consider changing to `self`, `&self`, `&mut self`, `self: Box<Self>`, `self: Rc<Self>`, `self: Arc<Self>`, or `self: Pin<P>` (where P is one of the previous types except `Self`)
 
 error[E0307]: invalid `self` parameter type: `&Bar<u32>`
-  --> $DIR/method_resolution3.rs:21:18
+  --> $DIR/method_resolution3.rs:20:18
    |
 LL |     fn baz(self: &Bar<u32>) {
    |                  ^^^^^^^^^
diff --git a/tests/ui/type-alias-impl-trait/method_resolution3.next.stderr b/tests/ui/type-alias-impl-trait/method_resolution3.next.stderr
index 9272017cdf5..09efd7a9e7e 100644
--- a/tests/ui/type-alias-impl-trait/method_resolution3.next.stderr
+++ b/tests/ui/type-alias-impl-trait/method_resolution3.next.stderr
@@ -1,15 +1,21 @@
-error[E0271]: type mismatch resolving `Foo == u32`
+error[E0307]: invalid `self` parameter type: `Bar<u32>`
   --> $DIR/method_resolution3.rs:16:18
    |
 LL |     fn bar(self: Bar<u32>) {
-   |                  ^^^^^^^^ types differ
+   |                  ^^^^^^^^
+   |
+   = note: type of `self` must be `Self` or a type that dereferences to it
+   = help: consider changing to `self`, `&self`, `&mut self`, `self: Box<Self>`, `self: Rc<Self>`, `self: Arc<Self>`, or `self: Pin<P>` (where P is one of the previous types except `Self`)
 
-error[E0271]: type mismatch resolving `Foo == u32`
-  --> $DIR/method_resolution3.rs:21:18
+error[E0307]: invalid `self` parameter type: `&Bar<u32>`
+  --> $DIR/method_resolution3.rs:20:18
    |
 LL |     fn baz(self: &Bar<u32>) {
-   |                  ^^^^^^^^^ types differ
+   |                  ^^^^^^^^^
+   |
+   = note: type of `self` must be `Self` or a type that dereferences to it
+   = help: consider changing to `self`, `&self`, `&mut self`, `self: Box<Self>`, `self: Rc<Self>`, `self: Arc<Self>`, or `self: Pin<P>` (where P is one of the previous types except `Self`)
 
 error: aborting due to 2 previous errors
 
-For more information about this error, try `rustc --explain E0271`.
+For more information about this error, try `rustc --explain E0307`.
diff --git a/tests/ui/type-alias-impl-trait/method_resolution3.rs b/tests/ui/type-alias-impl-trait/method_resolution3.rs
index 447f3144b82..0e6176bfe03 100644
--- a/tests/ui/type-alias-impl-trait/method_resolution3.rs
+++ b/tests/ui/type-alias-impl-trait/method_resolution3.rs
@@ -14,13 +14,11 @@ struct Bar<T>(T);
 
 impl Bar<Foo> {
     fn bar(self: Bar<u32>) {
-        //[current]~^ ERROR: invalid `self` parameter
-        //[next]~^^ ERROR: type mismatch resolving `Foo == u32`
+        //~^ ERROR: invalid `self` parameter
         self.foo()
     }
     fn baz(self: &Bar<u32>) {
-        //[current]~^ ERROR: invalid `self` parameter
-        //[next]~^^ ERROR: type mismatch resolving `Foo == u32`
+        //~^ ERROR: invalid `self` parameter
         self.foo()
     }
 }
diff --git a/tests/ui/type-alias-impl-trait/method_resolution4.current.stderr b/tests/ui/type-alias-impl-trait/method_resolution4.current.stderr
index 3a2ca18f890..8ffdb21f251 100644
--- a/tests/ui/type-alias-impl-trait/method_resolution4.current.stderr
+++ b/tests/ui/type-alias-impl-trait/method_resolution4.current.stderr
@@ -8,7 +8,7 @@ LL |     fn foo(self: Bar<Foo>) {
    = help: consider changing to `self`, `&self`, `&mut self`, `self: Box<Self>`, `self: Rc<Self>`, `self: Arc<Self>`, or `self: Pin<P>` (where P is one of the previous types except `Self`)
 
 error[E0307]: invalid `self` parameter type: `&Bar<Foo>`
-  --> $DIR/method_resolution4.rs:32:20
+  --> $DIR/method_resolution4.rs:31:20
    |
 LL |     fn foomp(self: &Bar<Foo>) {
    |                    ^^^^^^^^^
diff --git a/tests/ui/type-alias-impl-trait/method_resolution4.next.stderr b/tests/ui/type-alias-impl-trait/method_resolution4.next.stderr
index 33ed2800ebe..8ffdb21f251 100644
--- a/tests/ui/type-alias-impl-trait/method_resolution4.next.stderr
+++ b/tests/ui/type-alias-impl-trait/method_resolution4.next.stderr
@@ -1,15 +1,21 @@
-error[E0271]: type mismatch resolving `u32 == Foo`
+error[E0307]: invalid `self` parameter type: `Bar<Foo>`
   --> $DIR/method_resolution4.rs:27:18
    |
 LL |     fn foo(self: Bar<Foo>) {
-   |                  ^^^^^^^^ types differ
+   |                  ^^^^^^^^
+   |
+   = note: type of `self` must be `Self` or a type that dereferences to it
+   = help: consider changing to `self`, `&self`, `&mut self`, `self: Box<Self>`, `self: Rc<Self>`, `self: Arc<Self>`, or `self: Pin<P>` (where P is one of the previous types except `Self`)
 
-error[E0271]: type mismatch resolving `u32 == Foo`
-  --> $DIR/method_resolution4.rs:32:20
+error[E0307]: invalid `self` parameter type: `&Bar<Foo>`
+  --> $DIR/method_resolution4.rs:31:20
    |
 LL |     fn foomp(self: &Bar<Foo>) {
-   |                    ^^^^^^^^^ types differ
+   |                    ^^^^^^^^^
+   |
+   = note: type of `self` must be `Self` or a type that dereferences to it
+   = help: consider changing to `self`, `&self`, `&mut self`, `self: Box<Self>`, `self: Rc<Self>`, `self: Arc<Self>`, or `self: Pin<P>` (where P is one of the previous types except `Self`)
 
 error: aborting due to 2 previous errors
 
-For more information about this error, try `rustc --explain E0271`.
+For more information about this error, try `rustc --explain E0307`.
diff --git a/tests/ui/type-alias-impl-trait/method_resolution4.rs b/tests/ui/type-alias-impl-trait/method_resolution4.rs
index 42ed04b3c30..f33b4e473ae 100644
--- a/tests/ui/type-alias-impl-trait/method_resolution4.rs
+++ b/tests/ui/type-alias-impl-trait/method_resolution4.rs
@@ -25,13 +25,11 @@ impl Bar<Foo> {
 
 impl Bar<u32> {
     fn foo(self: Bar<Foo>) {
-        //[current]~^ ERROR: invalid `self` parameter
-        //[next]~^^ ERROR: type mismatch resolving `u32 == Foo`
+        //~^ ERROR: invalid `self` parameter
         self.bar()
     }
     fn foomp(self: &Bar<Foo>) {
-        //[current]~^ ERROR: invalid `self` parameter
-        //[next]~^^ ERROR: type mismatch resolving `u32 == Foo`
+        //~^ ERROR: invalid `self` parameter
         self.bar()
     }
 }