next-solver: normalize in `LoweredTy::from_raw`

6 files changed, 50 insertions, 12 deletions

diff --git a/tests/ui/for/issue-20605.next.stderr b/tests/ui/for/issue-20605.next.stderr
index 28dbdf4c374..3d753b9c8b8 100644
--- a/tests/ui/for/issue-20605.next.stderr
+++ b/tests/ui/for/issue-20605.next.stderr
@@ -34,15 +34,11 @@ error: the type `&mut <dyn Iterator<Item = &'a mut u8> as IntoIterator>::IntoIte
 LL |     for item in *things { *item = 0 }
    |                 ^^^^^^^
 
-error[E0277]: the size for values of type `<<dyn Iterator<Item = &'a mut u8> as IntoIterator>::IntoIter as Iterator>::Item` cannot be known at compilation time
-  --> $DIR/issue-20605.rs:5:9
+error: the type `Option<<<dyn Iterator<Item = &'a mut u8> as IntoIterator>::IntoIter as Iterator>::Item>` is not well-formed
+  --> $DIR/issue-20605.rs:5:17
    |
 LL |     for item in *things { *item = 0 }
-   |         ^^^^ doesn't have a size known at compile-time
-   |
-   = help: the trait `Sized` is not implemented for `<<dyn Iterator<Item = &'a mut u8> as IntoIterator>::IntoIter as Iterator>::Item`
-   = note: all local variables must have a statically known size
-   = help: unsized locals are gated as an unstable feature
+   |                 ^^^^^^^
 
 error[E0277]: the size for values of type `<<dyn Iterator<Item = &'a mut u8> as IntoIterator>::IntoIter as Iterator>::Item` cannot be known at compilation time
   --> $DIR/issue-20605.rs:5:5
@@ -54,11 +50,15 @@ LL |     for item in *things { *item = 0 }
 note: required by a bound in `None`
   --> $SRC_DIR/core/src/option.rs:LL:COL
 
-error: the type `Option<<<dyn Iterator<Item = &'a mut u8> as IntoIterator>::IntoIter as Iterator>::Item>` is not well-formed
-  --> $DIR/issue-20605.rs:5:17
+error[E0277]: the size for values of type `<<dyn Iterator<Item = &'a mut u8> as IntoIterator>::IntoIter as Iterator>::Item` cannot be known at compilation time
+  --> $DIR/issue-20605.rs:5:9
    |
 LL |     for item in *things { *item = 0 }
-   |                 ^^^^^^^
+   |         ^^^^ doesn't have a size known at compile-time
+   |
+   = help: the trait `Sized` is not implemented for `<<dyn Iterator<Item = &'a mut u8> as IntoIterator>::IntoIter as Iterator>::Item`
+   = note: all local variables must have a statically known size
+   = help: unsized locals are gated as an unstable feature
 
 error[E0614]: type `<<dyn Iterator<Item = &'a mut u8> as IntoIterator>::IntoIter as Iterator>::Item` cannot be dereferenced
   --> $DIR/issue-20605.rs:5:27
diff --git a/tests/ui/traits/next-solver/normalize-path-for-method.rs b/tests/ui/traits/next-solver/normalize-path-for-method.rs
new file mode 100644
index 00000000000..b95454306cd
--- /dev/null
+++ b/tests/ui/traits/next-solver/normalize-path-for-method.rs
@@ -0,0 +1,18 @@
+// compile-flags: -Znext-solver
+// check-pass
+
+trait Mirror {
+    type Assoc;
+}
+impl<T> Mirror for T {
+    type Assoc = T;
+}
+
+struct Foo;
+impl Foo {
+    fn new() -> Self { Foo }
+}
+
+fn main() {
+    <Foo as Mirror>::Assoc::new();
+}
diff --git a/tests/ui/traits/next-solver/overflow/recursive-self-normalization-2.rs b/tests/ui/traits/next-solver/overflow/recursive-self-normalization-2.rs
index 71b1502d775..932826519b7 100644
--- a/tests/ui/traits/next-solver/overflow/recursive-self-normalization-2.rs
+++ b/tests/ui/traits/next-solver/overflow/recursive-self-normalization-2.rs
@@ -16,6 +16,7 @@ fn test<T: Foo1<Assoc1 = <T as Foo2>::Assoc2> + Foo2<Assoc2 = <T as Foo1>::Assoc
     //~^ ERROR overflow evaluating the requirement `<T as Foo1>::Assoc1 == _`
     //~| ERROR overflow evaluating the requirement `<T as Foo1>::Assoc1 == _`
     //~| ERROR overflow evaluating the requirement `<T as Foo1>::Assoc1 == _`
+    //~| ERROR overflow evaluating the requirement `<T as Foo1>::Assoc1 == _`
     //~| ERROR overflow evaluating the requirement `<T as Foo1>::Assoc1: Bar`
 }
 
diff --git a/tests/ui/traits/next-solver/overflow/recursive-self-normalization-2.stderr b/tests/ui/traits/next-solver/overflow/recursive-self-normalization-2.stderr
index bad6820f738..e4f1f9cf022 100644
--- a/tests/ui/traits/next-solver/overflow/recursive-self-normalization-2.stderr
+++ b/tests/ui/traits/next-solver/overflow/recursive-self-normalization-2.stderr
@@ -1,3 +1,11 @@
+error[E0275]: overflow evaluating the requirement `<T as Foo1>::Assoc1 == _`
+  --> $DIR/recursive-self-normalization-2.rs:15:17
+   |
+LL |     needs_bar::<T::Assoc1>();
+   |                 ^^^^^^^^^
+   |
+   = help: consider increasing the recursion limit by adding a `#![recursion_limit = "256"]` attribute to your crate (`recursive_self_normalization_2`)
+
 error[E0275]: overflow evaluating the requirement `<T as Foo1>::Assoc1: Bar`
   --> $DIR/recursive-self-normalization-2.rs:15:17
    |
@@ -35,7 +43,8 @@ LL |     needs_bar::<T::Assoc1>();
    |                 ^^^^^^^^^
    |
    = help: consider increasing the recursion limit by adding a `#![recursion_limit = "256"]` attribute to your crate (`recursive_self_normalization_2`)
+   = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
 
-error: aborting due to 4 previous errors
+error: aborting due to 5 previous errors
 
 For more information about this error, try `rustc --explain E0275`.
diff --git a/tests/ui/traits/next-solver/overflow/recursive-self-normalization.rs b/tests/ui/traits/next-solver/overflow/recursive-self-normalization.rs
index 809a6a59ca6..32672c08c7e 100644
--- a/tests/ui/traits/next-solver/overflow/recursive-self-normalization.rs
+++ b/tests/ui/traits/next-solver/overflow/recursive-self-normalization.rs
@@ -12,6 +12,7 @@ fn test<T: Foo<Assoc = <T as Foo>::Assoc>>() {
     //~^ ERROR overflow evaluating the requirement `<T as Foo>::Assoc == _`
     //~| ERROR overflow evaluating the requirement `<T as Foo>::Assoc == _`
     //~| ERROR overflow evaluating the requirement `<T as Foo>::Assoc == _`
+    //~| ERROR overflow evaluating the requirement `<T as Foo>::Assoc == _`
     //~| ERROR overflow evaluating the requirement `<T as Foo>::Assoc: Bar`
 }
 
diff --git a/tests/ui/traits/next-solver/overflow/recursive-self-normalization.stderr b/tests/ui/traits/next-solver/overflow/recursive-self-normalization.stderr
index 80005d344ba..da5c8bde568 100644
--- a/tests/ui/traits/next-solver/overflow/recursive-self-normalization.stderr
+++ b/tests/ui/traits/next-solver/overflow/recursive-self-normalization.stderr
@@ -1,3 +1,11 @@
+error[E0275]: overflow evaluating the requirement `<T as Foo>::Assoc == _`
+  --> $DIR/recursive-self-normalization.rs:11:17
+   |
+LL |     needs_bar::<T::Assoc>();
+   |                 ^^^^^^^^
+   |
+   = help: consider increasing the recursion limit by adding a `#![recursion_limit = "256"]` attribute to your crate (`recursive_self_normalization`)
+
 error[E0275]: overflow evaluating the requirement `<T as Foo>::Assoc: Bar`
   --> $DIR/recursive-self-normalization.rs:11:17
    |
@@ -35,7 +43,8 @@ LL |     needs_bar::<T::Assoc>();
    |                 ^^^^^^^^
    |
    = help: consider increasing the recursion limit by adding a `#![recursion_limit = "256"]` attribute to your crate (`recursive_self_normalization`)
+   = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
 
-error: aborting due to 4 previous errors
+error: aborting due to 5 previous errors
 
 For more information about this error, try `rustc --explain E0275`.