Rollup merge of #99091 - compiler-errors:private-types-should-stay-private, r=lcnr

Do not mention private types from other crates as impl candidates

Fixes #99080

4 files changed, 47 insertions, 1 deletions

diff --git a/src/test/ui/suggestions/auxiliary/meow.rs b/src/test/ui/suggestions/auxiliary/meow.rs
new file mode 100644
index 00000000000..115df70a690
--- /dev/null
+++ b/src/test/ui/suggestions/auxiliary/meow.rs
@@ -0,0 +1,11 @@
+pub trait Meow {
+    fn meow(&self) {}
+}
+
+pub struct GlobalMeow;
+
+impl Meow for GlobalMeow {}
+
+pub(crate) struct PrivateMeow;
+
+impl Meow for PrivateMeow {}
diff --git a/src/test/ui/suggestions/issue-99080.rs b/src/test/ui/suggestions/issue-99080.rs
new file mode 100644
index 00000000000..91f574f35b8
--- /dev/null
+++ b/src/test/ui/suggestions/issue-99080.rs
@@ -0,0 +1,16 @@
+// aux-build:meow.rs
+
+extern crate meow;
+
+use meow::Meow;
+
+fn needs_meow<T: Meow>(t: T) {}
+
+fn main() {
+    needs_meow(1usize);
+    //~^ ERROR the trait bound `usize: Meow` is not satisfied
+}
+
+struct LocalMeow;
+
+impl Meow for LocalMeow {}
diff --git a/src/test/ui/suggestions/issue-99080.stderr b/src/test/ui/suggestions/issue-99080.stderr
new file mode 100644
index 00000000000..d1908dd9d0d
--- /dev/null
+++ b/src/test/ui/suggestions/issue-99080.stderr
@@ -0,0 +1,20 @@
+error[E0277]: the trait bound `usize: Meow` is not satisfied
+  --> $DIR/issue-99080.rs:10:16
+   |
+LL |     needs_meow(1usize);
+   |     ---------- ^^^^^^ the trait `Meow` is not implemented for `usize`
+   |     |
+   |     required by a bound introduced by this call
+   |
+   = help: the following other types implement trait `Meow`:
+             GlobalMeow
+             LocalMeow
+note: required by a bound in `needs_meow`
+  --> $DIR/issue-99080.rs:7:18
+   |
+LL | fn needs_meow<T: Meow>(t: T) {}
+   |                  ^^^^ required by this bound in `needs_meow`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0277`.
diff --git a/src/test/ui/traits/bound/assoc-fn-bound-root-obligation.stderr b/src/test/ui/traits/bound/assoc-fn-bound-root-obligation.stderr
index 115539a6dc2..6ce57b6263e 100644
--- a/src/test/ui/traits/bound/assoc-fn-bound-root-obligation.stderr
+++ b/src/test/ui/traits/bound/assoc-fn-bound-root-obligation.stderr
@@ -15,7 +15,6 @@ LL |     s.strip_suffix(b'\n').unwrap_or(s)
              &'c &'b str
              [char; N]
              char
-             pattern::MultiCharEqPattern<C>
    = note: required because of the requirements on the impl of `Pattern<'_>` for `u8`
 
 error: aborting due to previous error