diff options
Diffstat (limited to 'tests/ui/specialization')
13 files changed, 164 insertions, 26 deletions
diff --git a/tests/ui/specialization/coherence/default-impl-normalization-ambig-2.rs b/tests/ui/specialization/coherence/default-impl-normalization-ambig-2.rs new file mode 100644 index 00000000000..1691530fa0a --- /dev/null +++ b/tests/ui/specialization/coherence/default-impl-normalization-ambig-2.rs @@ -0,0 +1,19 @@ +// regression test for #118987 +#![feature(specialization)] //~ WARN the feature `specialization` is incomplete + +trait Assoc { + type Output; +} + +default impl<T: Clone> Assoc for T { + type Output = bool; +} + +impl Assoc for u8 {} + +trait Foo {} + +impl Foo for <u8 as Assoc>::Output {} +impl Foo for <u16 as Assoc>::Output {} +//~^ ERROR the trait bound `u16: Assoc` is not satisfied +fn main() {} diff --git a/tests/ui/specialization/coherence/default-impl-normalization-ambig-2.stderr b/tests/ui/specialization/coherence/default-impl-normalization-ambig-2.stderr new file mode 100644 index 00000000000..a2fca2ef5b6 --- /dev/null +++ b/tests/ui/specialization/coherence/default-impl-normalization-ambig-2.stderr @@ -0,0 +1,21 @@ +warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes + --> $DIR/default-impl-normalization-ambig-2.rs:2:12 + | +LL | #![feature(specialization)] + | ^^^^^^^^^^^^^^ + | + = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information + = help: consider using `min_specialization` instead, which is more stable and complete + = note: `#[warn(incomplete_features)]` on by default + +error[E0277]: the trait bound `u16: Assoc` is not satisfied + --> $DIR/default-impl-normalization-ambig-2.rs:17:14 + | +LL | impl Foo for <u16 as Assoc>::Output {} + | ^^^^^^^^^^^^^^^^^^^^^^ the trait `Assoc` is not implemented for `u16` + | + = help: the trait `Assoc` is implemented for `u8` + +error: aborting due to 1 previous error; 1 warning emitted + +For more information about this error, try `rustc --explain E0277`. diff --git a/tests/ui/specialization/coherence/default-item-normalization-ambig-1.rs b/tests/ui/specialization/coherence/default-item-normalization-ambig-1.rs new file mode 100644 index 00000000000..af7cf332d5f --- /dev/null +++ b/tests/ui/specialization/coherence/default-item-normalization-ambig-1.rs @@ -0,0 +1,25 @@ +// regression test for #73299. +#![feature(specialization)] //~ WARN the feature `specialization` is incomplete + +trait X { + type U; + fn f(&self) -> Self::U { + loop {} + } +} + +impl<T> X for T { + default type U = (); +} + +trait Y { + fn g(&self) {} +} + +impl Y for <() as X>::U {} +impl Y for <i32 as X>::U {} +//~^ ERROR conflicting implementations of trait `Y` for type `<() as X>::U` + +fn main() { + ().f().g(); +} diff --git a/tests/ui/specialization/coherence/default-item-normalization-ambig-1.stderr b/tests/ui/specialization/coherence/default-item-normalization-ambig-1.stderr new file mode 100644 index 00000000000..a15151cc9c4 --- /dev/null +++ b/tests/ui/specialization/coherence/default-item-normalization-ambig-1.stderr @@ -0,0 +1,21 @@ +warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes + --> $DIR/default-item-normalization-ambig-1.rs:2:12 + | +LL | #![feature(specialization)] + | ^^^^^^^^^^^^^^ + | + = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information + = help: consider using `min_specialization` instead, which is more stable and complete + = note: `#[warn(incomplete_features)]` on by default + +error[E0119]: conflicting implementations of trait `Y` for type `<() as X>::U` + --> $DIR/default-item-normalization-ambig-1.rs:20:1 + | +LL | impl Y for <() as X>::U {} + | ----------------------- first implementation here +LL | impl Y for <i32 as X>::U {} + | ^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `<() as X>::U` + +error: aborting due to 1 previous error; 1 warning emitted + +For more information about this error, try `rustc --explain E0119`. diff --git a/tests/ui/specialization/defaultimpl/specialization-no-default.rs b/tests/ui/specialization/defaultimpl/specialization-no-default.rs index 661724eef8a..ddc32337306 100644 --- a/tests/ui/specialization/defaultimpl/specialization-no-default.rs +++ b/tests/ui/specialization/defaultimpl/specialization-no-default.rs @@ -71,7 +71,8 @@ impl<T: Clone> Redundant for T { } default impl Redundant for i32 { - fn redundant(&self) {} //~ ERROR E0520 + fn redundant(&self) {} + //~^ ERROR `redundant` specializes an item from a parent `impl`, but that item is not marked `default` } fn main() {} diff --git a/tests/ui/specialization/issue-44861.rs b/tests/ui/specialization/issue-44861.rs index 79d9b9490d0..9d6517e613a 100644 --- a/tests/ui/specialization/issue-44861.rs +++ b/tests/ui/specialization/issue-44861.rs @@ -12,9 +12,9 @@ pub trait Smartass { type Data2: CoerceUnsized<*const [u8]>; } -pub trait MaybeObjectSafe {} +pub trait MaybeDynCompatible {} -impl MaybeObjectSafe for () {} +impl MaybeDynCompatible for () {} impl<T> Smartass for T { type Data = <Self as Smartass>::Data2; @@ -26,7 +26,7 @@ impl Smartass for () { type Data2 = *const [u8; 1]; } -impl Smartass for dyn MaybeObjectSafe { +impl Smartass for dyn MaybeDynCompatible { type Data = *const [u8]; type Data2 = *const [u8; 0]; } @@ -35,6 +35,6 @@ impl<U: Smartass+?Sized, T: Smartass+?Sized> CoerceUnsized<SmartassPtr<T>> for S where <U as Smartass>::Data: std::ops::CoerceUnsized<<T as Smartass>::Data> {} -pub fn conv(s: SmartassPtr<()>) -> SmartassPtr<dyn MaybeObjectSafe> { +pub fn conv(s: SmartassPtr<()>) -> SmartassPtr<dyn MaybeDynCompatible> { s } diff --git a/tests/ui/specialization/specialization-default-items-drop-coherence.current.stderr b/tests/ui/specialization/specialization-default-items-drop-coherence.current.stderr new file mode 100644 index 00000000000..36df6bfd9fc --- /dev/null +++ b/tests/ui/specialization/specialization-default-items-drop-coherence.current.stderr @@ -0,0 +1,12 @@ +error[E0119]: conflicting implementations of trait `Overlap` for type `u32` + --> $DIR/specialization-default-items-drop-coherence.rs:26:1 + | +LL | impl Overlap for u32 { + | -------------------- first implementation here +... +LL | impl Overlap for <u32 as Default>::Id { + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `u32` + +error: aborting due to 1 previous error + +For more information about this error, try `rustc --explain E0119`. diff --git a/tests/ui/specialization/specialization-default-items-drop-coherence.next.stderr b/tests/ui/specialization/specialization-default-items-drop-coherence.next.stderr index e9498a00317..36df6bfd9fc 100644 --- a/tests/ui/specialization/specialization-default-items-drop-coherence.next.stderr +++ b/tests/ui/specialization/specialization-default-items-drop-coherence.next.stderr @@ -1,5 +1,5 @@ error[E0119]: conflicting implementations of trait `Overlap` for type `u32` - --> $DIR/specialization-default-items-drop-coherence.rs:29:1 + --> $DIR/specialization-default-items-drop-coherence.rs:26:1 | LL | impl Overlap for u32 { | -------------------- first implementation here diff --git a/tests/ui/specialization/specialization-default-items-drop-coherence.rs b/tests/ui/specialization/specialization-default-items-drop-coherence.rs index 6dc01277639..b3c1f72777c 100644 --- a/tests/ui/specialization/specialization-default-items-drop-coherence.rs +++ b/tests/ui/specialization/specialization-default-items-drop-coherence.rs @@ -1,8 +1,5 @@ -//@ revisions: classic coherence next +//@ revisions: current next //@[next] compile-flags: -Znext-solver -//@[coherence] compile-flags: -Znext-solver=coherence -//@[classic] check-pass -//@[classic] known-bug: #105782 // Should fail. Default items completely drop candidates instead of ambiguity, // which is unsound during coherence, since coherence requires completeness. @@ -27,8 +24,7 @@ impl Overlap for u32 { } impl Overlap for <u32 as Default>::Id { - //[coherence]~^ ERROR conflicting implementations of trait `Overlap` for type `u32` - //[next]~^^ ERROR conflicting implementations of trait `Overlap` for type `u32` + //~^ ERROR conflicting implementations of trait `Overlap` for type `u32` type Assoc = Box<usize>; } diff --git a/tests/ui/specialization/specialization-overlap-projection.current.stderr b/tests/ui/specialization/specialization-overlap-projection.current.stderr index a69826fa96b..4e77cb17fbb 100644 --- a/tests/ui/specialization/specialization-overlap-projection.current.stderr +++ b/tests/ui/specialization/specialization-overlap-projection.current.stderr @@ -1,5 +1,5 @@ warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes - --> $DIR/specialization-overlap-projection.rs:10:12 + --> $DIR/specialization-overlap-projection.rs:4:12 | LL | #![feature(specialization)] | ^^^^^^^^^^^^^^ @@ -8,5 +8,23 @@ LL | #![feature(specialization)] = help: consider using `min_specialization` instead, which is more stable and complete = note: `#[warn(incomplete_features)]` on by default -warning: 1 warning emitted +error[E0119]: conflicting implementations of trait `Foo` for type `u32` + --> $DIR/specialization-overlap-projection.rs:19:1 + | +LL | impl Foo for u32 {} + | ---------------- first implementation here +LL | impl Foo for <u8 as Assoc>::Output {} + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `u32` + +error[E0119]: conflicting implementations of trait `Foo` for type `u32` + --> $DIR/specialization-overlap-projection.rs:21:1 + | +LL | impl Foo for u32 {} + | ---------------- first implementation here +... +LL | impl Foo for <u16 as Assoc>::Output {} + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `u32` + +error: aborting due to 2 previous errors; 1 warning emitted +For more information about this error, try `rustc --explain E0119`. diff --git a/tests/ui/specialization/specialization-overlap-projection.next.stderr b/tests/ui/specialization/specialization-overlap-projection.next.stderr index 5b17696162e..4e77cb17fbb 100644 --- a/tests/ui/specialization/specialization-overlap-projection.next.stderr +++ b/tests/ui/specialization/specialization-overlap-projection.next.stderr @@ -1,5 +1,5 @@ warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes - --> $DIR/specialization-overlap-projection.rs:10:12 + --> $DIR/specialization-overlap-projection.rs:4:12 | LL | #![feature(specialization)] | ^^^^^^^^^^^^^^ @@ -9,7 +9,7 @@ LL | #![feature(specialization)] = note: `#[warn(incomplete_features)]` on by default error[E0119]: conflicting implementations of trait `Foo` for type `u32` - --> $DIR/specialization-overlap-projection.rs:25:1 + --> $DIR/specialization-overlap-projection.rs:19:1 | LL | impl Foo for u32 {} | ---------------- first implementation here @@ -17,7 +17,7 @@ LL | impl Foo for <u8 as Assoc>::Output {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `u32` error[E0119]: conflicting implementations of trait `Foo` for type `u32` - --> $DIR/specialization-overlap-projection.rs:27:1 + --> $DIR/specialization-overlap-projection.rs:21:1 | LL | impl Foo for u32 {} | ---------------- first implementation here diff --git a/tests/ui/specialization/specialization-overlap-projection.rs b/tests/ui/specialization/specialization-overlap-projection.rs index 16dccf82dcb..f7a2a792243 100644 --- a/tests/ui/specialization/specialization-overlap-projection.rs +++ b/tests/ui/specialization/specialization-overlap-projection.rs @@ -1,13 +1,8 @@ -//@ revisions: current next -//@ ignore-compare-mode-next-solver (explicit revisions) -//@[next] compile-flags: -Znext-solver -//@[current] check-pass - // Test that impls on projected self types can resolve overlap, even when the // projections involve specialization, so long as the associated type is // provided by the most specialized impl. - -#![feature(specialization)] //~ WARN the feature `specialization` is incomplete +#![feature(specialization)] +//~^ WARN the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes trait Assoc { type Output; @@ -23,8 +18,8 @@ impl Assoc for u16 { type Output = u16; } trait Foo {} impl Foo for u32 {} impl Foo for <u8 as Assoc>::Output {} -//[next]~^ ERROR conflicting implementations of trait `Foo` for type `u32` +//~^ ERROR conflicting implementations of trait `Foo` for type `u32` impl Foo for <u16 as Assoc>::Output {} -//[next]~^ ERROR conflicting implementations of trait `Foo` for type `u32` +//~^ ERROR conflicting implementations of trait `Foo` for type `u32` fn main() {} diff --git a/tests/ui/specialization/specialization-overlap-projection.stderr b/tests/ui/specialization/specialization-overlap-projection.stderr new file mode 100644 index 00000000000..5f3cd9c66cf --- /dev/null +++ b/tests/ui/specialization/specialization-overlap-projection.stderr @@ -0,0 +1,30 @@ +warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes + --> $DIR/specialization-overlap-projection.rs:4:12 + | +LL | #![feature(specialization)] + | ^^^^^^^^^^^^^^ + | + = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information + = help: consider using `min_specialization` instead, which is more stable and complete + = note: `#[warn(incomplete_features)]` on by default + +error[E0119]: conflicting implementations of trait `Foo` for type `u32` + --> $DIR/specialization-overlap-projection.rs:20:1 + | +LL | impl Foo for u32 {} + | ---------------- first implementation here +LL | impl Foo for <u8 as Assoc>::Output {} + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `u32` + +error[E0119]: conflicting implementations of trait `Foo` for type `u32` + --> $DIR/specialization-overlap-projection.rs:22:1 + | +LL | impl Foo for u32 {} + | ---------------- first implementation here +... +LL | impl Foo for <u16 as Assoc>::Output {} + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `u32` + +error: aborting due to 2 previous errors; 1 warning emitted + +For more information about this error, try `rustc --explain E0119`. |