diff options
Diffstat (limited to 'tests')
6 files changed, 170 insertions, 0 deletions
diff --git a/tests/ui/async-await/async-closures/kind-due-to-arg-with-box-wrap.rs b/tests/ui/async-await/async-closures/kind-due-to-arg-with-box-wrap.rs new file mode 100644 index 00000000000..650fb10d94b --- /dev/null +++ b/tests/ui/async-await/async-closures/kind-due-to-arg-with-box-wrap.rs @@ -0,0 +1,22 @@ +//@ edition: 2024 + +// Regression test for <https://github.com/rust-lang/rust/issues/140292>. + +struct Test; + +impl Test { + async fn an_async_fn(&mut self) { + todo!() + } + + pub async fn uses_takes_asyncfn(&mut self) { + takes_asyncfn(Box::new(async || self.an_async_fn().await)); + //~^ ERROR expected a closure that implements the `AsyncFn` trait, but this closure only implements `AsyncFnMut` + } +} + +async fn takes_asyncfn(_: impl AsyncFn()) { + todo!() +} + +fn main() {} diff --git a/tests/ui/async-await/async-closures/kind-due-to-arg-with-box-wrap.stderr b/tests/ui/async-await/async-closures/kind-due-to-arg-with-box-wrap.stderr new file mode 100644 index 00000000000..e79f95c197b --- /dev/null +++ b/tests/ui/async-await/async-closures/kind-due-to-arg-with-box-wrap.stderr @@ -0,0 +1,21 @@ +error[E0525]: expected a closure that implements the `AsyncFn` trait, but this closure only implements `AsyncFnMut` + --> $DIR/kind-due-to-arg-with-box-wrap.rs:13:32 + | +LL | takes_asyncfn(Box::new(async || self.an_async_fn().await)); + | ------------- ---------^^^^^^^^-------------------------- + | | | | | + | | | | closure is `AsyncFnMut` because it mutates the variable `*self` here + | | | this closure implements `AsyncFnMut`, not `AsyncFn` + | | the requirement to implement `AsyncFn` derives from here + | required by a bound introduced by this call + | + = note: required for `Box<{async closure@$DIR/kind-due-to-arg-with-box-wrap.rs:13:32: 13:40}>` to implement `AsyncFn()` +note: required by a bound in `takes_asyncfn` + --> $DIR/kind-due-to-arg-with-box-wrap.rs:18:32 + | +LL | async fn takes_asyncfn(_: impl AsyncFn()) { + | ^^^^^^^^^ required by this bound in `takes_asyncfn` + +error: aborting due to 1 previous error + +For more information about this error, try `rustc --explain E0525`. diff --git a/tests/ui/const-generics/defaults/concrete-const-param-type.rs b/tests/ui/const-generics/defaults/concrete-const-param-type.rs new file mode 100644 index 00000000000..c411f81192b --- /dev/null +++ b/tests/ui/const-generics/defaults/concrete-const-param-type.rs @@ -0,0 +1,13 @@ +#![feature(generic_const_parameter_types, unsized_const_params, adt_const_params)] +//~^ WARN the feature `generic_const_parameter_types` is incomplete +//~| WARN the feature `unsized_const_params` is incomplete +// Make sure that we test the const param type of default const parameters +// if both the type of the default and the type of the parameter are concrete. + +use std::marker::ConstParamTy_; + +struct Foo<const N: u32, const M: u64 = N>; //~ ERROR the constant `N` is not of type `u64` +struct Bar<T: ConstParamTy_, const N: T, const M: u64 = N>(T); // ok +struct Baz<T: ConstParamTy_, const N: u32, const M: T = N>(T); // ok + +fn main() {} diff --git a/tests/ui/const-generics/defaults/concrete-const-param-type.stderr b/tests/ui/const-generics/defaults/concrete-const-param-type.stderr new file mode 100644 index 00000000000..ad077f87e5d --- /dev/null +++ b/tests/ui/const-generics/defaults/concrete-const-param-type.stderr @@ -0,0 +1,25 @@ +warning: the feature `generic_const_parameter_types` is incomplete and may not be safe to use and/or cause compiler crashes + --> $DIR/concrete-const-param-type.rs:1:12 + | +LL | #![feature(generic_const_parameter_types, unsized_const_params, adt_const_params)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = note: see issue #137626 <https://github.com/rust-lang/rust/issues/137626> for more information + = note: `#[warn(incomplete_features)]` on by default + +warning: the feature `unsized_const_params` is incomplete and may not be safe to use and/or cause compiler crashes + --> $DIR/concrete-const-param-type.rs:1:43 + | +LL | #![feature(generic_const_parameter_types, unsized_const_params, adt_const_params)] + | ^^^^^^^^^^^^^^^^^^^^ + | + = note: see issue #95174 <https://github.com/rust-lang/rust/issues/95174> for more information + +error: the constant `N` is not of type `u64` + --> $DIR/concrete-const-param-type.rs:9:26 + | +LL | struct Foo<const N: u32, const M: u64 = N>; + | ^^^^^^^^^^^^^^^^ expected `u64`, found `u32` + +error: aborting due to 1 previous error; 2 warnings emitted + diff --git a/tests/ui/transmutability/char.rs b/tests/ui/transmutability/char.rs new file mode 100644 index 00000000000..55a61537329 --- /dev/null +++ b/tests/ui/transmutability/char.rs @@ -0,0 +1,41 @@ +#![feature(never_type)] +#![feature(transmutability)] + +use std::mem::{Assume, TransmuteFrom}; + +pub fn is_transmutable<Src, Dst>() +where + Dst: TransmuteFrom<Src, { Assume::SAFETY }>, +{ +} + +fn main() { + is_transmutable::<char, u32>(); + + // `char`s can be in the following ranges: + // - [0, 0xD7FF] + // - [0xE000, 10FFFF] + // + // `Char` has variants whose tags are in the top and bottom of each range. + // It also has generic variants which are out of bounds of these ranges, but + // are generic on types which may be set to `!` to "disable" them in the + // transmutability analysis. + #[repr(u32)] + enum Char<B, C, D> { + A = 0, + B = 0xD7FF, + OverB(B) = 0xD800, + UnderC(C) = 0xDFFF, + C = 0xE000, + D = 0x10FFFF, + OverD(D) = 0x110000, + } + + is_transmutable::<Char<!, !, !>, char>(); + is_transmutable::<Char<(), !, !>, char>(); + //~^ ERROR cannot be safely transmuted into `char` + is_transmutable::<Char<!, (), !>, char>(); + //~^ ERROR cannot be safely transmuted into `char` + is_transmutable::<Char<!, !, ()>, char>(); + //~^ ERROR cannot be safely transmuted into `char` +} diff --git a/tests/ui/transmutability/char.stderr b/tests/ui/transmutability/char.stderr new file mode 100644 index 00000000000..98e7ae9c0d4 --- /dev/null +++ b/tests/ui/transmutability/char.stderr @@ -0,0 +1,48 @@ +error[E0277]: `main::Char<(), !, !>` cannot be safely transmuted into `char` + --> $DIR/char.rs:35:39 + | +LL | is_transmutable::<Char<(), !, !>, char>(); + | ^^^^ at least one value of `main::Char<(), !, !>` isn't a bit-valid value of `char` + | +note: required by a bound in `is_transmutable` + --> $DIR/char.rs:8:10 + | +LL | pub fn is_transmutable<Src, Dst>() + | --------------- required by a bound in this function +LL | where +LL | Dst: TransmuteFrom<Src, { Assume::SAFETY }>, + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `is_transmutable` + +error[E0277]: `main::Char<!, (), !>` cannot be safely transmuted into `char` + --> $DIR/char.rs:37:39 + | +LL | is_transmutable::<Char<!, (), !>, char>(); + | ^^^^ at least one value of `main::Char<!, (), !>` isn't a bit-valid value of `char` + | +note: required by a bound in `is_transmutable` + --> $DIR/char.rs:8:10 + | +LL | pub fn is_transmutable<Src, Dst>() + | --------------- required by a bound in this function +LL | where +LL | Dst: TransmuteFrom<Src, { Assume::SAFETY }>, + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `is_transmutable` + +error[E0277]: `main::Char<!, !, ()>` cannot be safely transmuted into `char` + --> $DIR/char.rs:39:39 + | +LL | is_transmutable::<Char<!, !, ()>, char>(); + | ^^^^ at least one value of `main::Char<!, !, ()>` isn't a bit-valid value of `char` + | +note: required by a bound in `is_transmutable` + --> $DIR/char.rs:8:10 + | +LL | pub fn is_transmutable<Src, Dst>() + | --------------- required by a bound in this function +LL | where +LL | Dst: TransmuteFrom<Src, { Assume::SAFETY }>, + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `is_transmutable` + +error: aborting due to 3 previous errors + +For more information about this error, try `rustc --explain E0277`. |