Auto merge of rust-lang#125278 - GuillaumeGomez:rollup-z2hluri, r=Gui…

…llaumeGomez

Rollup of 3 pull requests

Successful merges:

 - rust-lang#125261 (crashes: add more)
 - rust-lang#125270 (Followup fixes from rust-lang#123344)
 - rust-lang#125275 (Migrate `run-make/rustdoc-scrape-examples-test` to new `rmake.rs`)

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

compiler/rustc_ast/src/ast.rs

@@ -2733,6 +2733,13 @@ pub enum UseTreeKind {
     /// `use prefix` or `use prefix as rename`
     Simple(Option<Ident>),
     /// `use prefix::{...}`
+    ///
+    /// The span represents the braces of the nested group and all elements within:
+    ///
+    /// ```text
+    /// use foo::{bar, baz};
+    ///          ^^^^^^^^^^
+    /// ```
     Nested { items: ThinVec<(UseTree, NodeId)>, span: Span },
     /// `use prefix::*`
     Glob,

compiler/rustc_resolve/src/check_unused.rs

@@ -299,21 +299,21 @@ fn calc_unused_spans(
 
             let mut unused_spans = Vec::new();
             let mut to_remove = Vec::new();
-            let mut used_childs = 0;
+            let mut used_children = 0;
             let mut contains_self = false;
             let mut previous_unused = false;
             for (pos, (use_tree, use_tree_id)) in nested.iter().enumerate() {
                 let remove = match calc_unused_spans(unused_import, use_tree, *use_tree_id) {
                     UnusedSpanResult::Used => {
-                        used_childs += 1;
+                        used_children += 1;
                         None
                     }
                     UnusedSpanResult::Unused { mut spans, remove } => {
                         unused_spans.append(&mut spans);
                         Some(remove)
                     }
                     UnusedSpanResult::PartialUnused { mut spans, remove: mut to_remove_extra } => {
-                        used_childs += 1;
+                        used_children += 1;
                         unused_spans.append(&mut spans);
                         to_remove.append(&mut to_remove_extra);
                         None
@@ -322,7 +322,7 @@ fn calc_unused_spans(
                 if let Some(remove) = remove {
                     let remove_span = if nested.len() == 1 {
                         remove
-                    } else if pos == nested.len() - 1 || used_childs > 0 {
+                    } else if pos == nested.len() - 1 || used_children > 0 {
                         // Delete everything from the end of the last import, to delete the
                         // previous comma
                         nested[pos - 1].0.span.shrink_to_hi().to(use_tree.span)
@@ -346,7 +346,7 @@ fn calc_unused_spans(
             }
             if unused_spans.is_empty() {
                 UnusedSpanResult::Used
-            } else if used_childs == 0 {
+            } else if used_children == 0 {
                 UnusedSpanResult::Unused { spans: unused_spans, remove: full_span }
             } else {
                 // If there is only one remaining child that is used, the braces around the use
@@ -360,7 +360,7 @@ fn calc_unused_spans(
                 // `self`: `use foo::{self};` is valid Rust syntax, while `use foo::self;` errors
                 // out. We also cannot turn `use foo::{self}` into `use foo`, as the former doesn't
                 // import types with the same name as the module.
-                if used_childs == 1 && !contains_self {
+                if used_children == 1 && !contains_self {
                     // Left brace, from the start of the nested group to the first item.
                     to_remove.push(
                         tree_span.shrink_to_lo().to(nested.first().unwrap().0.span.shrink_to_lo()),

src/tools/tidy/src/allowed_run_make_makefiles.txt

@@ -236,7 +236,6 @@ run-make/rustc-macro-dep-files/Makefile
 run-make/rustdoc-io-error/Makefile
 run-make/rustdoc-scrape-examples-macros/Makefile
 run-make/rustdoc-scrape-examples-multiple/Makefile
-run-make/rustdoc-scrape-examples-test/Makefile
 run-make/rustdoc-scrape-examples-whitespace/Makefile
 run-make/rustdoc-verify-output-files/Makefile
 run-make/rustdoc-with-output-option/Makefile

tests/crashes/124833.rs

@@ -0,0 +1,10 @@
+//@ known-bug: rust-lang/rust#124833
+#![feature(generic_const_items)]
+
+trait Trait {
+    const C<'a>: &'a str;
+}
+
+impl Trait for () {
+    const C<'a>:  = "C";
+}

tests/crashes/124857.rs

@@ -0,0 +1,11 @@
+//@ known-bug: rust-lang/rust#124857
+//@ compile-flags: -Znext-solver=coherence
+
+#![feature(effects)]
+
+#[const_trait]
+trait Foo {}
+
+impl const Foo for i32 {}
+
+impl<T> const Foo for T where T: ~const Foo {}

tests/crashes/124891.rs

@@ -0,0 +1,22 @@
+//@ known-bug: rust-lang/rust#124891
+
+type Tait = impl FnOnce() -> ();
+
+fn reify_as_tait() -> Thunk<Tait> {
+    Thunk::new(|cont| cont)
+}
+
+struct Thunk<F>(F);
+
+impl<F> Thunk<F> {
+    fn new(f: F)
+    where
+        F: ContFn,
+    {
+        todo!();
+    }
+}
+
+trait ContFn {}
+
+impl<F: FnOnce(Tait) -> ()> ContFn for F {}

tests/crashes/124894.rs

@@ -0,0 +1,11 @@
+//@ known-bug: rust-lang/rust#124894
+//@ compile-flags: -Znext-solver=coherence
+
+#![feature(generic_const_exprs)]
+
+pub trait IsTrue<const mem: bool> {}
+impl<T> IsZST for T where (): IsTrue<{ std::mem::size_of::<T>() == 0 }> {}
+
+pub trait IsZST {}
+
+impl IsZST for IsZST {}

tests/crashes/125081.rs

@@ -0,0 +1,7 @@
+//@ known-bug: rust-lang/rust#125081
+
+use std::cell::Cell;
+
+fn main() {
+    let _: Cell<&str, "a"> = Cell::new('β);
+}

tests/crashes/125099.rs

@@ -0,0 +1,24 @@
+//@ known-bug: rust-lang/rust#125099
+
+pub trait ContFn<T>: Fn(T) -> Self::Future {
+    type Future;
+}
+impl<T, F> ContFn<T> for F
+where
+    F: Fn(T),
+{
+    type Future = ();
+}
+
+pub trait SeqHandler {
+    type Requires;
+    fn process<F: ContFn<Self::Requires>>() -> impl Sized;
+}
+
+pub struct ConvertToU64;
+impl SeqHandler for ConvertToU64 {
+    type Requires = u64;
+    fn process<F: ContFn<Self::Requires>>() -> impl Sized {}
+}
+
+fn main() {}

tests/crashes/125155.rs

@@ -0,0 +1,17 @@
+//@ known-bug: rust-lang/rust#125155
+
+enum NestedEnum {
+    First,
+    Second,
+    Third
+}
+enum Enum {
+    Variant2(Option<*mut &'a &'b ()>)
+}
+
+
+fn foo(x: Enum) -> isize {
+    match x {
+      Enum::Variant2(NestedEnum::Third) => 4,
+    }
+}

tests/crashes/125185.rs

@@ -0,0 +1,16 @@
+//@ known-bug: rust-lang/rust#125185
+//@ compile-flags: -Zvalidate-mir
+
+type Foo = impl Send;
+
+struct A;
+
+const VALUE: Foo = value();
+
+fn test(foo: Foo<'a>, f: impl for<'b> FnMut()) {
+    match VALUE {
+        0 | 0 => {}
+
+        _ => (),
+    }
+}

tests/crashes/125249.rs

@@ -0,0 +1,8 @@
+//@ known-bug: rust-lang/rust#125185
+#![feature(return_position_impl_trait_in_trait, return_type_notation)]
+
+trait IntFactory {
+    fn stream(&self) -> impl IntFactory<stream(): IntFactory<stream(): Send> + Send>;
+}
+
+pub fn main() {}

tests/run-make/rustdoc-scrape-examples-invalid-expr/rmake.rs

@@ -2,5 +2,5 @@
 mod scrape;
 
 fn main() {
-    scrape::scrape();
+    scrape::scrape(&[]);
 }

tests/run-make/rustdoc-scrape-examples-ordering/rmake.rs

@@ -2,5 +2,5 @@
 mod scrape;
 
 fn main() {
-    scrape::scrape();
+    scrape::scrape(&[]);
 }

tests/run-make/rustdoc-scrape-examples-remap/rmake.rs

@@ -1,5 +1,5 @@
 mod scrape;
 
 fn main() {
-    scrape::scrape();
+    scrape::scrape(&[]);
 }

tests/run-make/rustdoc-scrape-examples-remap/scrape.rs

@@ -2,7 +2,7 @@ use run_make_support::{htmldocck, rustc, rustdoc, source_path, tmp_dir};
 use std::fs::read_dir;
 use std::path::Path;
 
-pub fn scrape() {
+pub fn scrape(extra_args: &[&str]) {
     let lib_dir = tmp_dir();
     let out_dir = tmp_dir().join("rustdoc");
     let crate_name = "foobar";
@@ -29,6 +29,7 @@ pub fn scrape() {
             .arg(&out_example)
             .arg("--scrape-examples-target-crate")
             .arg(crate_name)
+            .args(extra_args)
             .run();
         out_deps.push(out_example);
     }

tests/run-make/rustdoc-scrape-examples-test/rmake.rs

@@ -0,0 +1,6 @@
+#[path = "../rustdoc-scrape-examples-remap/scrape.rs"]
+mod scrape;
+
+fn main() {
+    scrape::scrape(&["--scrape-tests"]);
+}