Auto merge of #146072 - Zalathar:rollup-0svnrfe, r=Zalathar

Rollup of 6 pull requests

Successful merges:

 - rust-lang/rust#145421 (`dump_mir` cleanups)
 - rust-lang/rust#145968 (Add `Bound::copied`)
 - rust-lang/rust#146004 (resolve: Refactor `struct ExternPreludeEntry`)
 - rust-lang/rust#146042 (Detect negative literal inferred to unsigned integer)
 - rust-lang/rust#146046 (Suggest method name with maybe ty mismatch)
 - rust-lang/rust#146051 (Change std f32 test to pass under Miri)

r? `@ghost`
`@rustbot` modify labels: rollup

6 files changed, 76 insertions, 0 deletions

diff --git a/tests/ui/async-await/dont-suggest-await-on-method-return-mismatch.stderr b/tests/ui/async-await/dont-suggest-await-on-method-return-mismatch.stderr
index 1faaf4ddce2..aa2343e48a6 100644
--- a/tests/ui/async-await/dont-suggest-await-on-method-return-mismatch.stderr
+++ b/tests/ui/async-await/dont-suggest-await-on-method-return-mismatch.stderr
@@ -3,6 +3,11 @@ error[E0599]: no method named `test` found for opaque type `impl Future<Output =
    |
 LL |     let x: u32 = foo().test();
    |                        ^^^^ method not found in `impl Future<Output = A>`
+   |
+help: consider `await`ing on the `Future` and calling the method on its `Output`
+   |
+LL |     let x: u32 = foo().await.test();
+   |                        ++++++
 
 error: aborting due to 1 previous error
 
diff --git a/tests/ui/privacy/private-field-ty-err.stderr b/tests/ui/privacy/private-field-ty-err.stderr
index 17d50f24a94..0eecad14cfc 100644
--- a/tests/ui/privacy/private-field-ty-err.stderr
+++ b/tests/ui/privacy/private-field-ty-err.stderr
@@ -3,6 +3,11 @@ error[E0616]: field `len` of struct `Foo` is private
    |
 LL |     if x.len {
    |          ^^^ private field
+   |
+help: a method `len` also exists, call it with parentheses
+   |
+LL |     if x.len() {
+   |             ++
 
 error: aborting due to 1 previous error
 
diff --git a/tests/ui/suggestions/negative-literal-infered-to-unsigned.rs b/tests/ui/suggestions/negative-literal-infered-to-unsigned.rs
new file mode 100644
index 00000000000..39797574b97
--- /dev/null
+++ b/tests/ui/suggestions/negative-literal-infered-to-unsigned.rs
@@ -0,0 +1,13 @@
+fn main() {
+    for x in -5..5 {
+        //~^ ERROR: the trait bound `usize: Neg` is not satisfied
+        //~| HELP: consider specifying an integer type that can be negative
+        do_something(x);
+    }
+    let x = -5;
+    //~^ ERROR: the trait bound `usize: Neg` is not satisfied
+    //~| HELP: consider specifying an integer type that can be negative
+    do_something(x);
+}
+
+fn do_something(_val: usize) {}
diff --git a/tests/ui/suggestions/negative-literal-infered-to-unsigned.stderr b/tests/ui/suggestions/negative-literal-infered-to-unsigned.stderr
new file mode 100644
index 00000000000..b49ea224d2b
--- /dev/null
+++ b/tests/ui/suggestions/negative-literal-infered-to-unsigned.stderr
@@ -0,0 +1,25 @@
+error[E0277]: the trait bound `usize: Neg` is not satisfied
+  --> $DIR/negative-literal-infered-to-unsigned.rs:2:14
+   |
+LL |     for x in -5..5 {
+   |              ^^ the trait `Neg` is not implemented for `usize`
+   |
+help: consider specifying an integer type that can be negative
+   |
+LL |     for x in -5isize..5 {
+   |                +++++
+
+error[E0277]: the trait bound `usize: Neg` is not satisfied
+  --> $DIR/negative-literal-infered-to-unsigned.rs:7:13
+   |
+LL |     let x = -5;
+   |             ^^ the trait `Neg` is not implemented for `usize`
+   |
+help: consider specifying an integer type that can be negative
+   |
+LL |     let x = -5isize;
+   |               +++++
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0277`.
diff --git a/tests/ui/typeck/suggest-method-name-with-maybe-ty-mismatch-146008.rs b/tests/ui/typeck/suggest-method-name-with-maybe-ty-mismatch-146008.rs
new file mode 100644
index 00000000000..671f280e814
--- /dev/null
+++ b/tests/ui/typeck/suggest-method-name-with-maybe-ty-mismatch-146008.rs
@@ -0,0 +1,14 @@
+struct LlamaModel;
+
+impl LlamaModel {
+    fn chat_template(&self) -> Result<&str, ()> {
+        todo!()
+    }
+}
+
+fn template_from_str(_x: &str) {}
+
+fn main() {
+    let model = LlamaModel;
+    template_from_str(&model.chat_template); //~ ERROR attempted to take value of method `chat_template` on type `LlamaModel`
+}
diff --git a/tests/ui/typeck/suggest-method-name-with-maybe-ty-mismatch-146008.stderr b/tests/ui/typeck/suggest-method-name-with-maybe-ty-mismatch-146008.stderr
new file mode 100644
index 00000000000..7f5dd0617b1
--- /dev/null
+++ b/tests/ui/typeck/suggest-method-name-with-maybe-ty-mismatch-146008.stderr
@@ -0,0 +1,14 @@
+error[E0615]: attempted to take value of method `chat_template` on type `LlamaModel`
+  --> $DIR/suggest-method-name-with-maybe-ty-mismatch-146008.rs:13:30
+   |
+LL |     template_from_str(&model.chat_template);
+   |                              ^^^^^^^^^^^^^ method, not a field
+   |
+help: use parentheses to call the method
+   |
+LL |     template_from_str(&model.chat_template());
+   |                                           ++
+
+error: aborting due to 1 previous error
+
+For more information about this error, try `rustc --explain E0615`.