Skip to content
Closed
Show file tree
Hide file tree
Changes from all commits
Commits
File filter

Filter by extension

Filter by extension

Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
17 changes: 17 additions & 0 deletions tests/ui/codegen/issue-107975-pointer-inequality.rs
Original file line number Diff line number Diff line change
@@ -0,0 +1,17 @@
// run-pass
// known-bug: #107975
fn main() {
let a: *const u8;
let b: *const u8;
{
let v: [u8; 16] = [core::hint::black_box(0); 16];
a = &(v[0]);
}
{
let v: [u8; 16] = [core::hint::black_box(0); 16];
b = &(v[0]);
}
assert_ne!(a, b);
println!("{a:?} {b:?}");
assert_eq!(a, b);
}
39 changes: 39 additions & 0 deletions tests/ui/specialization/issue-105787.rs
Original file line number Diff line number Diff line change
@@ -0,0 +1,39 @@
// check-pass
Copy link
Member

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

This isn't specialization. Maybe typeck?

// known-bug: #105787
trait ToUnit<'a> {
type Unit;
}

struct LocalTy;
impl<'a> ToUnit<'a> for *const LocalTy {
type Unit = ();
}

impl<'a, T: Copy + ?Sized> ToUnit<'a> for *const T {
type Unit = ();
}

trait Overlap<T> {
type Assoc;
}

type Assoc<'a, T> = <*const T as ToUnit<'a>>::Unit;

impl<T> Overlap<T> for T {
type Assoc = usize;
}

impl<T> Overlap<for<'a> fn(&'a (), Assoc<'a, T>)> for T
where
for<'a> *const T: ToUnit<'a>,
{
type Assoc = Box<usize>;
}

fn foo<T: Overlap<U>, U>(x: T::Assoc) -> T::Assoc {
x
}

fn main() {
foo::<for<'a> fn(&'a (), ()), for<'a> fn(&'a (), ())>(3usize);
}
Original file line number Diff line number Diff line change
@@ -0,0 +1,25 @@
// known-bug: #108425
// check-pass
#![feature(type_alias_impl_trait)]
use std::fmt::Display;

type Opaque<'a> = impl Sized + 'static;
fn define<'a>() -> Opaque<'a> {}

trait Trait {
type Assoc: Display;
}
impl<'a> Trait for Opaque<'a> {
type Assoc = &'a str;
}

// ======= Exploit =======

fn extend<T: Trait + 'static>(s: T::Assoc) -> Box<dyn Display> {
Box::new(s)
}

fn main() {
let val = extend::<Opaque<'_>>(&String::from("blah blah blah"));
println!("{}", val);
}