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Merge pull request #655 from fanninpm/add-ices-2021-02-15
Add some ICEs
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#!/bin/bash | ||
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cat > out.rs <<'EOF' | ||
#![feature(const_generics, const_evaluatable_checked)] | ||
#![allow(incomplete_features)] | ||
struct A<T, const N: core::num::NonZeroUsize>([T; N.get()]) where [T; N.get()]: Sized; | ||
EOF | ||
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rustdoc out.rs --output-format json |
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#!/bin/bash | ||
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rustc --test -C incremental=foo - <<'EOF' | ||
#![feature(const_generics)] | ||
#![feature(const_evaluatable_checked)] | ||
#![allow(incomplete_features)] | ||
pub trait IsTrue {} | ||
pub trait IsFalse {} | ||
pub struct Assert<const CHECK: bool> {} | ||
impl IsTrue for Assert<true> {} | ||
impl IsFalse for Assert<false> {} | ||
pub struct SliceConstWriter<'a, const N: usize> { | ||
ptr: &'a mut [u8] | ||
} | ||
impl<'a, const N: usize> SliceConstWriter<'a, {N}> { | ||
pub fn from_slice(vec: &'a mut [u8]) -> Self { | ||
Self { | ||
ptr: vec | ||
} | ||
} | ||
pub fn convert<const NN: usize>(mut self) -> SliceConstWriter<'a, {NN}> { | ||
SliceConstWriter { | ||
ptr: self.ptr | ||
} | ||
} | ||
} | ||
impl<'a, const N: usize> SliceConstWriter<'a, {N}> where Assert::<{N >= 2}>: IsTrue { | ||
// broken | ||
pub fn write_u8(mut self) -> SliceConstWriter<'a, {N-2}> { | ||
self.convert() | ||
} | ||
//working | ||
// pub fn write_u8(mut self) -> SliceConstWriter<'a, {N-2}> { | ||
// SliceConstWriter { | ||
// ptr: self.ptr | ||
// } | ||
// } | ||
} | ||
#[cfg(test)] | ||
mod tests { | ||
use crate::SliceConstWriter; | ||
#[test] | ||
fn it_works() { | ||
let mut buff = [0u8; 128]; | ||
let mut a = SliceConstWriter::<10>::from_slice(&mut buff); | ||
let mut a = a.write_u8().write_u8().write_u8().write_u8().write_u8(); | ||
} | ||
} | ||
EOF |
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#![crate_type = "lib"] | ||
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mod convenience_operators { | ||
use crate::{Op, Relation}; | ||
use std::ops::AddAssign; | ||
use std::ops::Mul; | ||
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impl<C: Op> Relation<C> { | ||
pub fn map<F: Fn(C::D) -> D2 + 'static, D2: 'static>( | ||
self, | ||
f: F, | ||
) -> Relation<impl Op<D = D2, R = C::R>> { | ||
self.map_dr(move |x, r| (f(x), r)) | ||
} | ||
} | ||
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impl<K: 'static, V: 'static, C: Op<D = (K, V)>> Relation<C> { | ||
pub fn semijoin<C2: Op<D = K, R = R2>, R2, R3: AddAssign<R3>>( | ||
self, | ||
other: Relation<C2>, | ||
) -> Relation<impl Op<D = C::D, R = R3>> | ||
where | ||
C::R: Mul<R2, Output = R3>, | ||
{ | ||
self.join(other.map(|x| (x, ()))).map(|(k, x, ())| (k, x)) | ||
} | ||
} | ||
} | ||
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mod core { | ||
mod operator { | ||
mod join { | ||
use super::Op; | ||
use crate::core::Relation; | ||
use std::ops::{AddAssign, Mul}; | ||
struct Join<LC, RC> { | ||
_left: LC, | ||
_right: RC, | ||
} | ||
impl< | ||
LC: Op<D = (K, LD), R = LR>, | ||
RC: Op<D = (K, RD), R = RR>, | ||
K: 'static, | ||
LD: 'static, | ||
LR: AddAssign<LR> + Mul<RR, Output = OR>, | ||
RD: 'static, | ||
RR: AddAssign<RR>, | ||
OR: AddAssign<OR>, | ||
> Op for Join<LC, RC> | ||
{ | ||
type D = (K, LD, RD); | ||
type R = OR; | ||
} | ||
impl<K: 'static, D: 'static, C: Op<D = (K, D)>> Relation<C> { | ||
pub fn join<C2: Op<D = (K, D2)>, D2: 'static, OR: AddAssign<OR>>( | ||
self, | ||
other: Relation<C2>, | ||
) -> Relation<impl Op<D = (K, D, D2), R = OR>> | ||
where | ||
C::R: Mul<C2::R, Output = OR>, | ||
{ | ||
Relation { | ||
inner: Join { | ||
_left: self.inner, | ||
_right: other.inner, | ||
}, | ||
} | ||
} | ||
} | ||
} | ||
mod map { | ||
use super::Op; | ||
use crate::core::Relation; | ||
use std::ops::AddAssign; | ||
struct Map<C, MF> { | ||
_inner: C, | ||
_op: MF, | ||
} | ||
impl< | ||
D1, | ||
R1, | ||
D2: 'static, | ||
R2: AddAssign<R2>, | ||
C: Op<D = D1, R = R1>, | ||
MF: Fn(D1, R1) -> (D2, R2), | ||
> Op for Map<C, MF> | ||
{ | ||
type D = D2; | ||
type R = R2; | ||
} | ||
impl<C: Op> Relation<C> { | ||
pub fn map_dr<F: Fn(C::D, C::R) -> (D2, R2), D2: 'static, R2: AddAssign<R2>>( | ||
self, | ||
f: F, | ||
) -> Relation<impl Op<D = D2, R = R2>> { | ||
Relation { | ||
inner: Map { | ||
_inner: self.inner, | ||
_op: f, | ||
}, | ||
} | ||
} | ||
} | ||
} | ||
use std::ops::AddAssign; | ||
pub trait Op { | ||
type D: 'static; | ||
type R: AddAssign<Self::R>; | ||
} | ||
} | ||
pub use self::operator::Op; | ||
#[derive(Clone)] | ||
pub struct Relation<C> { | ||
inner: C, | ||
} | ||
} | ||
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use self::core::Op; | ||
pub use self::core::Relation; |
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use std::sync::Mutex; | ||
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struct MarketMultiplier {} | ||
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impl MarketMultiplier { | ||
fn buy(&mut self) -> &mut usize { | ||
todo!() | ||
} | ||
} | ||
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async fn buy_lock(generator: &Mutex<MarketMultiplier>) -> LockedMarket<'_> { | ||
LockedMarket(generator.lock().unwrap().buy()) | ||
} | ||
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struct LockedMarket<T>(T); | ||
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fn main() {} |
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trait Trait { | ||
type Associated; | ||
fn func() -> Self::Associated; | ||
} | ||
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trait Bound {} | ||
pub struct Struct; | ||
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impl Trait for Struct { | ||
type Associated = impl Bound; | ||
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fn func() -> Self::Associated { | ||
Some(42).map(|_| j) | ||
} | ||
} |
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fn main() { | ||
super(); | ||
} |