diff --git a/tests/crashes/128094.rs b/tests/crashes/128094.rs
new file mode 100644
index 0000000000000..105a1c84a6565
--- /dev/null
+++ b/tests/crashes/128094.rs
@@ -0,0 +1,14 @@
+//@ known-bug: rust-lang/rust#128094
+//@ compile-flags: -Zmir-opt-level=5 --edition=2018
+
+pub enum Request {
+    TestSome(T),
+}
+
+pub async fn handle_event(event: Request) {
+    async move {
+        static instance: Request = Request { bar: 17 };
+        &instance
+    }
+    .await;
+}
diff --git a/tests/crashes/128176.rs b/tests/crashes/128176.rs
new file mode 100644
index 0000000000000..70fada4f0fec2
--- /dev/null
+++ b/tests/crashes/128176.rs
@@ -0,0 +1,13 @@
+//@ known-bug: rust-lang/rust#128176
+
+#![feature(generic_const_exprs)]
+#![feature(object_safe_for_dispatch)]
+trait X {
+    type Y<const N: i16>;
+}
+
+const _: () = {
+    fn f2<'a>(arg: Box<dyn X<Y<1> = &'a ()>>) {}
+};
+
+fn main() {}
diff --git a/tests/crashes/128190.rs b/tests/crashes/128190.rs
new file mode 100644
index 0000000000000..0fa7027ae6091
--- /dev/null
+++ b/tests/crashes/128190.rs
@@ -0,0 +1,7 @@
+//@ known-bug: rust-lang/rust#128190
+
+fn a(&self) {
+    15
+}
+
+reuse a as b {  struct S; }
diff --git a/tests/crashes/128327.rs b/tests/crashes/128327.rs
new file mode 100644
index 0000000000000..a63f758c317cf
--- /dev/null
+++ b/tests/crashes/128327.rs
@@ -0,0 +1,5 @@
+//@ known-bug: rust-lang/rust#128327
+
+use std::ops::Deref;
+struct Apple((Apple, <&'static [f64] as Deref>::Target(Banana ? Citron)));
+fn main(){}
diff --git a/tests/crashes/128346.rs b/tests/crashes/128346.rs
new file mode 100644
index 0000000000000..93d9c40a544e9
--- /dev/null
+++ b/tests/crashes/128346.rs
@@ -0,0 +1,13 @@
+//@ known-bug: rust-lang/rust#128346
+
+macro_rules! one_rep {
+    ( $($a:ident)* ) => {
+        A(
+            const ${concat($a, Z)}: i32 = 3;
+        )*
+    };
+}
+
+fn main() {
+    one_rep!(A B C);
+}
diff --git a/tests/crashes/128621-2.rs b/tests/crashes/128621-2.rs
new file mode 100644
index 0000000000000..b1cdaf94984a8
--- /dev/null
+++ b/tests/crashes/128621-2.rs
@@ -0,0 +1,16 @@
+//@ known-bug: rust-lang/rust#128621
+
+#![feature(ptr_metadata)]
+use std::{ops::FnMut, ptr::Pointee};
+
+pub type EmplacerFn<'a, T> = dyn for<'b> FnMut(<T as Pointee>::Metadata) + 'a;
+
+pub struct Emplacer<'a, T>(EmplacerFn<'a, T>);
+
+impl<'a, T> Emplacer<'a, T> {
+    pub unsafe fn from_fn<'b>(emplacer_fn: &'b mut EmplacerFn<'a, T>) -> &'b mut Self {
+        unsafe { &mut *((emplacer_fn as *mut EmplacerFn<'a, T>) as *mut Self) }
+    }
+}
+
+pub fn main() {}
diff --git a/tests/crashes/128621.rs b/tests/crashes/128621.rs
new file mode 100644
index 0000000000000..0a02352236dbb
--- /dev/null
+++ b/tests/crashes/128621.rs
@@ -0,0 +1,19 @@
+//@ known-bug: rust-lang/rust#128621
+
+trait Trait {
+    type Associated;
+}
+
+impl Trait for i32 {
+    type Associated = i64;
+}
+
+trait Generic<T> {}
+
+type TraitObject = dyn Generic<<i32 as Trait>::Associated>;
+
+struct Wrap(TraitObject);
+
+fn cast(x: *mut TraitObject) {
+    x as *mut Wrap;
+}