diff options
Diffstat (limited to 'src/test/ui/dyn-star')
24 files changed, 383 insertions, 2 deletions
diff --git a/src/test/ui/dyn-star/align.normal.stderr b/src/test/ui/dyn-star/align.normal.stderr new file mode 100644 index 000000000..983d7bf6e --- /dev/null +++ b/src/test/ui/dyn-star/align.normal.stderr @@ -0,0 +1,11 @@ +warning: the feature `dyn_star` is incomplete and may not be safe to use and/or cause compiler crashes + --> $DIR/align.rs:4:12 + | +LL | #![feature(dyn_star)] + | ^^^^^^^^ + | + = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information + = note: `#[warn(incomplete_features)]` on by default + +warning: 1 warning emitted + diff --git a/src/test/ui/dyn-star/align.over_aligned.stderr b/src/test/ui/dyn-star/align.over_aligned.stderr new file mode 100644 index 000000000..6b6fc55d8 --- /dev/null +++ b/src/test/ui/dyn-star/align.over_aligned.stderr @@ -0,0 +1,20 @@ +warning: the feature `dyn_star` is incomplete and may not be safe to use and/or cause compiler crashes + --> $DIR/align.rs:4:12 + | +LL | #![feature(dyn_star)] + | ^^^^^^^^ + | + = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information + = note: `#[warn(incomplete_features)]` on by default + +error[E0277]: `AlignedUsize` needs to be a pointer-sized type + --> $DIR/align.rs:15:13 + | +LL | let x = AlignedUsize(12) as dyn* Debug; + | ^^^^^^^^^^^^^^^^ `AlignedUsize` needs to be a pointer-sized type + | + = help: the trait `PointerSized` is not implemented for `AlignedUsize` + +error: aborting due to previous error; 1 warning emitted + +For more information about this error, try `rustc --explain E0277`. diff --git a/src/test/ui/dyn-star/align.rs b/src/test/ui/dyn-star/align.rs new file mode 100644 index 000000000..fb41a05a0 --- /dev/null +++ b/src/test/ui/dyn-star/align.rs @@ -0,0 +1,17 @@ +// revisions: normal over_aligned +//[normal] check-pass + +#![feature(dyn_star)] +//~^ WARN the feature `dyn_star` is incomplete and may not be safe to use and/or cause compiler crashes + +use std::fmt::Debug; + +#[cfg_attr(over_aligned, repr(C, align(1024)))] +#[cfg_attr(not(over_aligned), repr(C))] +#[derive(Debug)] +struct AlignedUsize(usize); + +fn main() { + let x = AlignedUsize(12) as dyn* Debug; + //[over_aligned]~^ ERROR `AlignedUsize` needs to be a pointer-sized type +} diff --git a/src/test/ui/dyn-star/check-size-at-cast-polymorphic-bad.rs b/src/test/ui/dyn-star/check-size-at-cast-polymorphic-bad.rs new file mode 100644 index 000000000..e19e36cc7 --- /dev/null +++ b/src/test/ui/dyn-star/check-size-at-cast-polymorphic-bad.rs @@ -0,0 +1,15 @@ +#![feature(dyn_star)] +#![allow(incomplete_features)] + +use std::fmt::Debug; + +fn dyn_debug(_: (dyn* Debug + '_)) { + +} + +fn polymorphic<T: Debug + ?Sized>(t: &T) { + dyn_debug(t); + //~^ ERROR `&T` needs to be a pointer-sized type +} + +fn main() {} diff --git a/src/test/ui/dyn-star/check-size-at-cast-polymorphic-bad.stderr b/src/test/ui/dyn-star/check-size-at-cast-polymorphic-bad.stderr new file mode 100644 index 000000000..53ccbe43d --- /dev/null +++ b/src/test/ui/dyn-star/check-size-at-cast-polymorphic-bad.stderr @@ -0,0 +1,15 @@ +error[E0277]: `&T` needs to be a pointer-sized type + --> $DIR/check-size-at-cast-polymorphic-bad.rs:11:15 + | +LL | dyn_debug(t); + | ^ `&T` needs to be a pointer-sized type + | + = help: the trait `PointerSized` is not implemented for `&T` +help: consider introducing a `where` clause, but there might be an alternative better way to express this requirement + | +LL | fn polymorphic<T: Debug + ?Sized>(t: &T) where &T: PointerSized { + | ++++++++++++++++++++++ + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0277`. diff --git a/src/test/ui/dyn-star/check-size-at-cast-polymorphic.rs b/src/test/ui/dyn-star/check-size-at-cast-polymorphic.rs new file mode 100644 index 000000000..5c0a3d256 --- /dev/null +++ b/src/test/ui/dyn-star/check-size-at-cast-polymorphic.rs @@ -0,0 +1,16 @@ +// check-pass + +#![feature(dyn_star)] +#![allow(incomplete_features)] + +use std::fmt::Debug; + +fn dyn_debug(_: (dyn* Debug + '_)) { + +} + +fn polymorphic<T: Debug>(t: &T) { + dyn_debug(t); +} + +fn main() {} diff --git a/src/test/ui/dyn-star/check-size-at-cast.rs b/src/test/ui/dyn-star/check-size-at-cast.rs new file mode 100644 index 000000000..1f22f7983 --- /dev/null +++ b/src/test/ui/dyn-star/check-size-at-cast.rs @@ -0,0 +1,10 @@ +#![feature(dyn_star)] +#![allow(incomplete_features)] + +use std::fmt::Debug; + +fn main() { + let i = [1, 2, 3, 4] as dyn* Debug; + //~^ ERROR `[i32; 4]` needs to be a pointer-sized type + dbg!(i); +} diff --git a/src/test/ui/dyn-star/check-size-at-cast.stderr b/src/test/ui/dyn-star/check-size-at-cast.stderr new file mode 100644 index 000000000..af2a1ccf7 --- /dev/null +++ b/src/test/ui/dyn-star/check-size-at-cast.stderr @@ -0,0 +1,11 @@ +error[E0277]: `[i32; 4]` needs to be a pointer-sized type + --> $DIR/check-size-at-cast.rs:7:13 + | +LL | let i = [1, 2, 3, 4] as dyn* Debug; + | ^^^^^^^^^^^^ `[i32; 4]` needs to be a pointer-sized type + | + = help: the trait `PointerSized` is not implemented for `[i32; 4]` + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0277`. diff --git a/src/test/ui/dyn-star/dispatch-on-pin-mut.rs b/src/test/ui/dyn-star/dispatch-on-pin-mut.rs new file mode 100644 index 000000000..5774c8b2a --- /dev/null +++ b/src/test/ui/dyn-star/dispatch-on-pin-mut.rs @@ -0,0 +1,52 @@ +// run-pass +// edition:2021 +// check-run-results + +#![feature(dyn_star)] +//~^ WARN the feature `dyn_star` is incomplete and may not be safe to use and/or cause compiler crashes + +use std::future::Future; + +async fn foo(f: dyn* Future<Output = i32>) { + println!("value: {}", f.await); +} + +async fn async_main() { + foo(Box::pin(async { 1 })).await +} + +// ------------------------------------------------------------------------- // +// Implementation Details Below... + +use std::pin::Pin; +use std::task::*; + +pub fn noop_waker() -> Waker { + let raw = RawWaker::new(std::ptr::null(), &NOOP_WAKER_VTABLE); + + // SAFETY: the contracts for RawWaker and RawWakerVTable are upheld + unsafe { Waker::from_raw(raw) } +} + +const NOOP_WAKER_VTABLE: RawWakerVTable = RawWakerVTable::new(noop_clone, noop, noop, noop); + +unsafe fn noop_clone(_p: *const ()) -> RawWaker { + RawWaker::new(std::ptr::null(), &NOOP_WAKER_VTABLE) +} + +unsafe fn noop(_p: *const ()) {} + +fn main() { + let mut fut = async_main(); + + // Poll loop, just to test the future... + let waker = noop_waker(); + let ctx = &mut Context::from_waker(&waker); + + loop { + match unsafe { Pin::new_unchecked(&mut fut).poll(ctx) } { + Poll::Pending => {} + Poll::Ready(()) => break, + } + } +} diff --git a/src/test/ui/dyn-star/dispatch-on-pin-mut.run.stdout b/src/test/ui/dyn-star/dispatch-on-pin-mut.run.stdout new file mode 100644 index 000000000..96c5ca698 --- /dev/null +++ b/src/test/ui/dyn-star/dispatch-on-pin-mut.run.stdout @@ -0,0 +1 @@ +value: 1 diff --git a/src/test/ui/dyn-star/dispatch-on-pin-mut.stderr b/src/test/ui/dyn-star/dispatch-on-pin-mut.stderr new file mode 100644 index 000000000..fdf74aa7e --- /dev/null +++ b/src/test/ui/dyn-star/dispatch-on-pin-mut.stderr @@ -0,0 +1,11 @@ +warning: the feature `dyn_star` is incomplete and may not be safe to use and/or cause compiler crashes + --> $DIR/dispatch-on-pin-mut.rs:5:12 + | +LL | #![feature(dyn_star)] + | ^^^^^^^^ + | + = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information + = note: `#[warn(incomplete_features)]` on by default + +warning: 1 warning emitted + diff --git a/src/test/ui/dyn-star/dont-unsize-coerce-dyn-star.rs b/src/test/ui/dyn-star/dont-unsize-coerce-dyn-star.rs new file mode 100644 index 000000000..c12b16f16 --- /dev/null +++ b/src/test/ui/dyn-star/dont-unsize-coerce-dyn-star.rs @@ -0,0 +1,27 @@ +// run-pass +// check-run-results + +#![feature(dyn_star)] +//~^ WARN the feature `dyn_star` is incomplete and may not be safe to use and/or cause compiler crashes + +trait AddOne { + fn add1(&mut self) -> usize; +} + +impl AddOne for usize { + fn add1(&mut self) -> usize { + *self += 1; + *self + } +} + +fn add_one(i: &mut (dyn* AddOne + '_)) -> usize { + i.add1() +} + +fn main() { + let mut x = 42usize as dyn* AddOne; + + println!("{}", add_one(&mut x)); + println!("{}", add_one(&mut x)); +} diff --git a/src/test/ui/dyn-star/dont-unsize-coerce-dyn-star.run.stdout b/src/test/ui/dyn-star/dont-unsize-coerce-dyn-star.run.stdout new file mode 100644 index 000000000..b4db3ed70 --- /dev/null +++ b/src/test/ui/dyn-star/dont-unsize-coerce-dyn-star.run.stdout @@ -0,0 +1,2 @@ +43 +44 diff --git a/src/test/ui/dyn-star/dont-unsize-coerce-dyn-star.stderr b/src/test/ui/dyn-star/dont-unsize-coerce-dyn-star.stderr new file mode 100644 index 000000000..933c13383 --- /dev/null +++ b/src/test/ui/dyn-star/dont-unsize-coerce-dyn-star.stderr @@ -0,0 +1,11 @@ +warning: the feature `dyn_star` is incomplete and may not be safe to use and/or cause compiler crashes + --> $DIR/dont-unsize-coerce-dyn-star.rs:4:12 + | +LL | #![feature(dyn_star)] + | ^^^^^^^^ + | + = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information + = note: `#[warn(incomplete_features)]` on by default + +warning: 1 warning emitted + diff --git a/src/test/ui/dyn-star/dyn-async-trait.rs b/src/test/ui/dyn-star/dyn-async-trait.rs new file mode 100644 index 000000000..9b27133b4 --- /dev/null +++ b/src/test/ui/dyn-star/dyn-async-trait.rs @@ -0,0 +1,36 @@ +// check-pass +// edition: 2021 + +// This test case is meant to demonstrate how close we can get to async +// functions in dyn traits with the current level of dyn* support. + +#![feature(dyn_star)] +#![allow(incomplete_features)] + +use std::future::Future; + +trait DynAsyncCounter { + fn increment<'a>(&'a mut self) -> dyn* Future<Output = usize> + 'a; +} + +struct MyCounter { + count: usize, +} + +impl DynAsyncCounter for MyCounter { + fn increment<'a>(&'a mut self) -> dyn* Future<Output = usize> + 'a { + Box::pin(async { + self.count += 1; + self.count + }) + } +} + +async fn do_counter(counter: &mut dyn DynAsyncCounter) -> usize { + counter.increment().await +} + +fn main() { + let mut counter = MyCounter { count: 0 }; + let _ = do_counter(&mut counter); +} diff --git a/src/test/ui/dyn-star/issue-102430.rs b/src/test/ui/dyn-star/issue-102430.rs new file mode 100644 index 000000000..244ecda66 --- /dev/null +++ b/src/test/ui/dyn-star/issue-102430.rs @@ -0,0 +1,32 @@ +// check-pass + +#![feature(dyn_star)] +#![allow(incomplete_features)] + +trait AddOne { + fn add1(&mut self) -> usize; +} + +impl AddOne for usize { + fn add1(&mut self) -> usize { + *self += 1; + *self + } +} + +impl AddOne for &mut usize { + fn add1(&mut self) -> usize { + (*self).add1() + } +} + +fn add_one(mut i: dyn* AddOne + '_) -> usize { + i.add1() +} + +fn main() { + let mut x = 42usize; + let y = &mut x as (dyn* AddOne + '_); + + println!("{}", add_one(y)); +} diff --git a/src/test/ui/dyn-star/no-unsize-coerce-dyn-trait.rs b/src/test/ui/dyn-star/no-unsize-coerce-dyn-trait.rs new file mode 100644 index 000000000..a4eb669e3 --- /dev/null +++ b/src/test/ui/dyn-star/no-unsize-coerce-dyn-trait.rs @@ -0,0 +1,13 @@ +#![feature(dyn_star, trait_upcasting)] +//~^ WARN the feature `dyn_star` is incomplete and may not be safe to use and/or cause compiler crashes + +trait A: B {} +trait B {} +impl A for usize {} +impl B for usize {} + +fn main() { + let x: Box<dyn* A> = Box::new(1usize as dyn* A); + let y: Box<dyn* B> = x; + //~^ ERROR mismatched types +} diff --git a/src/test/ui/dyn-star/no-unsize-coerce-dyn-trait.stderr b/src/test/ui/dyn-star/no-unsize-coerce-dyn-trait.stderr new file mode 100644 index 000000000..2fc751b3b --- /dev/null +++ b/src/test/ui/dyn-star/no-unsize-coerce-dyn-trait.stderr @@ -0,0 +1,23 @@ +warning: the feature `dyn_star` is incomplete and may not be safe to use and/or cause compiler crashes + --> $DIR/no-unsize-coerce-dyn-trait.rs:1:12 + | +LL | #![feature(dyn_star, trait_upcasting)] + | ^^^^^^^^ + | + = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information + = note: `#[warn(incomplete_features)]` on by default + +error[E0308]: mismatched types + --> $DIR/no-unsize-coerce-dyn-trait.rs:11:26 + | +LL | let y: Box<dyn* B> = x; + | ----------- ^ expected trait `B`, found trait `A` + | | + | expected due to this + | + = note: expected struct `Box<dyn* B>` + found struct `Box<dyn* A>` + +error: aborting due to previous error; 1 warning emitted + +For more information about this error, try `rustc --explain E0308`. diff --git a/src/test/ui/dyn-star/return.rs b/src/test/ui/dyn-star/return.rs new file mode 100644 index 000000000..fa3d8d7d5 --- /dev/null +++ b/src/test/ui/dyn-star/return.rs @@ -0,0 +1,10 @@ +// check-pass + +#![feature(dyn_star)] +//~^ WARN the feature `dyn_star` is incomplete and may not be safe to use and/or cause compiler crashes + +fn _foo() -> dyn* Unpin { + 4usize +} + +fn main() {} diff --git a/src/test/ui/dyn-star/return.stderr b/src/test/ui/dyn-star/return.stderr new file mode 100644 index 000000000..e000351a6 --- /dev/null +++ b/src/test/ui/dyn-star/return.stderr @@ -0,0 +1,11 @@ +warning: the feature `dyn_star` is incomplete and may not be safe to use and/or cause compiler crashes + --> $DIR/return.rs:3:12 + | +LL | #![feature(dyn_star)] + | ^^^^^^^^ + | + = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information + = note: `#[warn(incomplete_features)]` on by default + +warning: 1 warning emitted + diff --git a/src/test/ui/dyn-star/unsize-into-ref-dyn-star.rs b/src/test/ui/dyn-star/unsize-into-ref-dyn-star.rs new file mode 100644 index 000000000..1e8cafe15 --- /dev/null +++ b/src/test/ui/dyn-star/unsize-into-ref-dyn-star.rs @@ -0,0 +1,9 @@ +#![feature(dyn_star)] +#![allow(incomplete_features)] + +use std::fmt::Debug; + +fn main() { + let i = 42 as &dyn* Debug; + //~^ ERROR non-primitive cast: `i32` as `&dyn* Debug` +} diff --git a/src/test/ui/dyn-star/unsize-into-ref-dyn-star.stderr b/src/test/ui/dyn-star/unsize-into-ref-dyn-star.stderr new file mode 100644 index 000000000..f6444a60a --- /dev/null +++ b/src/test/ui/dyn-star/unsize-into-ref-dyn-star.stderr @@ -0,0 +1,9 @@ +error[E0605]: non-primitive cast: `i32` as `&dyn* Debug` + --> $DIR/unsize-into-ref-dyn-star.rs:7:13 + | +LL | let i = 42 as &dyn* Debug; + | ^^^^^^^^^^^^^^^^^ an `as` expression can only be used to convert between primitive types or to coerce to a specific trait object + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0605`. diff --git a/src/test/ui/dyn-star/upcast.rs b/src/test/ui/dyn-star/upcast.rs index cee76ada7..c667ac143 100644 --- a/src/test/ui/dyn-star/upcast.rs +++ b/src/test/ui/dyn-star/upcast.rs @@ -1,7 +1,6 @@ -// run-pass +// known-bug: #104800 #![feature(dyn_star, trait_upcasting)] -#![allow(incomplete_features)] trait Foo: Bar { fn hello(&self); diff --git a/src/test/ui/dyn-star/upcast.stderr b/src/test/ui/dyn-star/upcast.stderr new file mode 100644 index 000000000..6a95f7754 --- /dev/null +++ b/src/test/ui/dyn-star/upcast.stderr @@ -0,0 +1,20 @@ +warning: the feature `dyn_star` is incomplete and may not be safe to use and/or cause compiler crashes + --> $DIR/upcast.rs:3:12 + | +LL | #![feature(dyn_star, trait_upcasting)] + | ^^^^^^^^ + | + = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information + = note: `#[warn(incomplete_features)]` on by default + +error[E0277]: `dyn* Foo` needs to be a pointer-sized type + --> $DIR/upcast.rs:30:23 + | +LL | let w: dyn* Bar = w; + | ^ `dyn* Foo` needs to be a pointer-sized type + | + = help: the trait `PointerSized` is not implemented for `dyn* Foo` + +error: aborting due to previous error; 1 warning emitted + +For more information about this error, try `rustc --explain E0277`. |