Rollup merge of rust-lang#128036 - matthiaskrgr:ccrashes, r=jieyouxu

add more tests

r? `@jieyouxu`

Author: tgross35

tests/crashes/127351.rs

@@ -0,0 +1,17 @@
+//@ known-bug: #127351
+#![feature(lazy_type_alias)]
+#![allow(incomplete_features)]
+
+struct Outer0<'a, T>(ExplicitTypeOutlives<'a, T>);
+type ExplicitTypeOutlives<'a, T: 'a> = (&'a (), T);
+
+pub struct Warns {
+    _significant_drop: ExplicitTypeOutlives,
+    field: String,
+}
+
+pub fn test(w: Warns) {
+    _ = || drop(w.field);
+}
+
+fn main() {}

tests/crashes/127353.rs

@@ -0,0 +1,18 @@
+//@ known-bug: #127353
+#![feature(type_alias_impl_trait)]
+trait Trait<T> {}
+type Alias<'a, U> = impl Trait<U>;
+
+fn f<'a>() -> Alias<'a, ()> {}
+
+pub enum UninhabitedVariants {
+    Tuple(Alias),
+}
+
+struct A;
+
+fn cannot_empty_match_on_enum_with_empty_variants_struct_to_anything(x: UninhabitedVariants) -> A {
+    match x {}
+}
+
+fn main() {}

tests/crashes/127628.rs

@@ -0,0 +1,14 @@
+//@ known-bug: #127628
+//@ compile-flags: -Zpolonius=next
+
+use std::io::{self, Read};
+
+pub struct Container<'a> {
+    reader: &'a mut dyn Read,
+}
+
+impl<'a> Container {
+    pub fn wrap<'s>(reader: &'s mut dyn io::Read) -> Container<'s> {
+        Container { reader: reader }
+    }
+}

tests/crashes/127643.rs

@@ -0,0 +1,18 @@
+//@ known-bug: #127643
+
+#![feature(associated_const_equality)]
+
+fn user() -> impl Owner<dyn Sized, C = 0> {}
+
+trait Owner<K> {
+    const C: K;
+}
+impl<K: ConstDefault> Owner<K> for () {
+    const C: K = K::DEFAULT;
+}
+
+trait ConstDefault {
+    const DEFAULT: Self;
+}
+
+fn main() {}

tests/crashes/127676.rs

@@ -0,0 +1,8 @@
+//@ known-bug: #127676
+//@ edition:2018
+
+#![feature(dyn_star,const_async_blocks)]
+
+static S: dyn* Send + Sync = async { 42 };
+
+pub fn main() {}

tests/crashes/127737.rs

@@ -0,0 +1,21 @@
+//@ known-bug: #127737
+//@ compile-flags: -Zmir-opt-level=5 --crate-type lib
+
+pub trait TestTrait {
+    type MyType;
+    fn func() -> Option<Self>
+    where
+        Self: Sized;
+}
+
+impl<T> dyn TestTrait<MyType = T>
+where
+    Self: Sized,
+{
+    pub fn other_func() -> Option<Self> {
+        match Self::func() {
+            Some(me) => Some(me),
+            None => None,
+        }
+    }
+}

tests/crashes/127742.rs

@@ -0,0 +1,11 @@
+//@ known-bug: #127742
+struct Vtable(dyn Cap);  // missing lifetime
+
+trait Cap<'a> {}
+
+union Transmute {
+    t: u64,  // ICEs with u64, u128, or usize. Correctly errors with u32.
+    u: &'static Vtable,
+}
+
+const G: &'static Vtable = unsafe { Transmute { t: 1 }.u };

tests/crashes/127880.rs

@@ -0,0 +1,5 @@
+//@ known-bug: #127880
+//@ compile-flags: -Cinstrument-coverage
+
+#[coverage]
+fn main() {}

tests/crashes/127916.rs

@@ -0,0 +1,16 @@
+//@ known-bug: #127916
+
+trait Trait {
+    fn foo(&self) -> u32 { 0 }
+}
+
+struct F;
+struct S;
+
+mod to_reuse {
+    pub fn foo(&self) -> u32 {}
+}
+
+impl Trait  S {
+    reuse to_reuse::foo { self }
+}

tests/crashes/127972.rs

@@ -0,0 +1,6 @@
+//@ known-bug: #127962
+#![feature(generic_const_exprs)]
+
+fn zero_init<const usize: usize>() -> Substs1<{ (N) }> {
+    Substs1([0; { (usize) }])
+}