50 lines
1.1 KiB
Rust
50 lines
1.1 KiB
Rust
|
// normalize-stderr-test: "long-type-\d+" -> "long-type-hash"
|
||
|
|
|
||
|
|
// Fixes #110131
|
||
|
|
//
|
||
|
|
// The issue is that we were constructing an `ImplDerived` cause code for the
|
||
|
|
// `&'a T: IntoIterator<Item = &'a u8>` obligation for `Helper::new`, which is
|
||
|
|
// incorrect because derived obligations are only expected to come from *traits*.
|
||
|
|
|
||
|
|
struct SeqBuffer<'a, T>
|
||
|
|
where
|
||
|
|
&'a T: IntoIterator<Item = &'a u8>,
|
||
|
|
{
|
||
|
|
iter: <&'a T as IntoIterator>::IntoIter,
|
||
|
|
}
|
||
|
|
|
||
|
|
struct Helper<'a, T>
|
||
|
|
where
|
||
|
|
&'a T: IntoIterator<Item = &'a u8>,
|
||
|
|
{
|
||
|
|
buf: SeqBuffer<'a, T>,
|
||
|
|
}
|
||
|
|
|
||
|
|
impl<'a, T> Helper<'a, T>
|
||
|
|
where
|
||
|
|
&'a T: IntoIterator<Item = &'a u8>,
|
||
|
|
{
|
||
|
|
fn new(sq: &'a T) -> Self {
|
||
|
|
loop {}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
struct BitReaderWrapper<T>(T);
|
||
|
|
|
||
|
|
impl<'a, T> IntoIterator for &'a BitReaderWrapper<T>
|
||
|
|
where
|
||
|
|
&'a T: IntoIterator<Item = &'a u8>,
|
||
|
|
{
|
||
|
|
type Item = u32;
|
||
|
|
|
||
|
|
type IntoIter = Helper<'a, T>;
|
||
|
|
//~^ ERROR `Helper<'a, T>` is not an iterator
|
||
|
|
|
||
|
|
fn into_iter(self) -> Self::IntoIter {
|
||
|
|
Helper::new(&self.0)
|
||
|
|
//~^ ERROR overflow evaluating the requirement `&_: IntoIterator`
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
fn main() {}
|