Auto merge of rust-lang#126869 - matthiaskrgr:kaboom, r=jieyouxu

crashes: add more tests

Author: bors

tests/crashes/126646.rs

@@ -0,0 +1,18 @@
+//@ known-bug: rust-lang/rust#126646
+mod foo {
+    pub trait Callable {
+        type Output;
+        fn call() -> Self::Output;
+    }
+
+    impl<'a, V: ?Sized> Callable for &'a () {
+        type Output = ();
+    }
+}
+use foo::*;
+
+fn test<'a>() -> impl Sized {
+    <&'a () as Callable>::call()
+}
+
+fn main() {}

tests/crashes/126648.rs

@@ -0,0 +1,8 @@
+//@ known-bug: rust-lang/rust#126648
+struct Outest(*const &'a ());
+
+fn make() -> Outest {}
+
+fn main() {
+    if let Outest("foo") = make() {}
+}

tests/crashes/126666.rs

@@ -0,0 +1,18 @@
+//@ known-bug: rust-lang/rust#126666
+#![feature(const_mut_refs)]
+#![feature(const_refs_to_static)]
+#![feature(object_safe_for_dispatch)]
+
+struct Meh {
+    x: &'static dyn UnsafeCell,
+}
+
+const MUH: Meh = Meh {
+    x: &mut *(&READONLY as *const _ as *mut _),
+};
+
+static READONLY: i32 = 0;
+
+trait UnsafeCell<'a> {}
+
+pub fn main() {}

tests/crashes/126667.rs

@@ -0,0 +1,14 @@
+//@ known-bug: rust-lang/rust#126667
+#![warn(rust_2021_compatibility)]
+
+trait Static<'a> {}
+
+struct Foo((u32, u32));
+
+fn main() {
+    type T = impl Static;
+    let foo: T = Foo((1u32, 2u32));
+    let x = move || {
+        let Foo((a, b)) = foo;
+    };
+}

tests/crashes/126680.rs

@@ -0,0 +1,21 @@
+//@ known-bug: rust-lang/rust#126680
+//@ compile-flags: -Zvalidate-mir
+#![feature(type_alias_impl_trait)]
+type Bar = impl std::fmt::Display;
+
+use std::path::Path;
+
+struct A {
+    pub func: fn(check: Bar, b: Option<&Path>),
+}
+const MY_A: A = A {
+    func: |check, b| {
+        if check {
+            ()
+        } else if let Some(_) = b.and_then(|p| p.parent()) {
+            ()
+        }
+    },
+};
+
+fn main() {}

tests/crashes/126696.rs

@@ -0,0 +1,24 @@
+//@ known-bug: rust-lang/rust#126696
+#![feature(generic_const_exprs)]
+#![allow(incomplete_features)]
+
+fn can_double<const N: usize>(x: [(); N])
+where
+    [(); N * 2]:,
+{
+    x[0];
+    unimplemented!()
+}
+
+fn foo<const N: usize>()
+where
+    [(); (N + 1) * 2]:,
+{
+    can_double([(); { N + 1 }]);
+    // Adding an explicit constant generic causes the ICE to go away
+    // can_double::<{N + 1}>([(); { N + 1 }]);
+}
+
+fn main() {
+    foo::<1>();
+}

tests/crashes/126725.rs

@@ -0,0 +1,20 @@
+//@ known-bug: rust-lang/rust#126725
+trait Foo {
+    fn foo<'a>(&'a self) -> <&'a impl Sized as Bar>::Output;
+}
+
+trait Bar {
+    type Output;
+}
+
+struct X(i32);
+
+impl<'a> Bar for &'a X {
+    type Output = &'a i32;
+}
+
+impl Foo for X {
+    fn foo<'a>(&'a self) -> <&'a Self as Bar>::Output {
+        &self.0
+    }
+}

tests/crashes/126744.rs

@@ -0,0 +1,8 @@
+//@ known-bug: rust-lang/rust#126744
+struct X {,}
+
+fn main() {
+    || {
+        if let X { x: 1,} = (X {}) {}
+    };
+}

tests/crashes/126850.rs

@@ -0,0 +1,11 @@
+//@ known-bug: rust-lang/rust#126850
+fn bug<T>() -> impl Iterator<
+    Item = [(); {
+               |found: &String| Some(false);
+               4
+           }],
+> {
+    std::iter::empty()
+}
+
+fn main() {}