diff options
Diffstat (limited to 'src/test/ui/implied-bounds')
6 files changed, 104 insertions, 1 deletions
diff --git a/src/test/ui/implied-bounds/hrlt-implied-trait-bounds-guard.rs b/src/test/ui/implied-bounds/hrlt-implied-trait-bounds-guard.rs index d9de73a38..79844dcbd 100644 --- a/src/test/ui/implied-bounds/hrlt-implied-trait-bounds-guard.rs +++ b/src/test/ui/implied-bounds/hrlt-implied-trait-bounds-guard.rs @@ -31,6 +31,16 @@ fn badboi<'in_, 'out, T>(x: Foo<'in_, 'out, T>, sadness: &'in_ T) -> &'out T { sadness.cast() } +fn badboi2<'in_, 'out, T>(x: Foo<'in_, 'out, T>, sadness: &'in_ T) { + //~^ ERROR lifetime mismatch + let _: &'out T = sadness.cast(); +} + +fn badboi3<'in_, 'out, T>(a: Foo<'in_, 'out, (&'in_ T, &'out T)>, sadness: &'in_ T) { + //~^ ERROR lifetime mismatch + let _: &'out T = sadness.cast(); +} + fn bad<'short, T>(value: &'short T) -> &'static T { let x: for<'in_, 'out> fn(Foo<'in_, 'out, T>, &'in_ T) -> &'out T = badboi; let x: for<'out> fn(Foo<'short, 'out, T>, &'short T) -> &'out T = x; diff --git a/src/test/ui/implied-bounds/hrlt-implied-trait-bounds-guard.stderr b/src/test/ui/implied-bounds/hrlt-implied-trait-bounds-guard.stderr index b020ea64b..0c00bbc38 100644 --- a/src/test/ui/implied-bounds/hrlt-implied-trait-bounds-guard.stderr +++ b/src/test/ui/implied-bounds/hrlt-implied-trait-bounds-guard.stderr @@ -7,6 +7,24 @@ LL | fn badboi<'in_, 'out, T>(x: Foo<'in_, 'out, T>, sadness: &'in_ T) -> &'out | this parameter and the return type are declared with different lifetimes... | ...but data from `x` is returned here -error: aborting due to previous error +error[E0623]: lifetime mismatch + --> $DIR/hrlt-implied-trait-bounds-guard.rs:34:30 + | +LL | fn badboi2<'in_, 'out, T>(x: Foo<'in_, 'out, T>, sadness: &'in_ T) { + | ^^^^^^^^^^^^^^^^^^ + | | + | this type is declared with multiple lifetimes... + | ...but data with one lifetime flows into the other here + +error[E0623]: lifetime mismatch + --> $DIR/hrlt-implied-trait-bounds-guard.rs:39:30 + | +LL | fn badboi3<'in_, 'out, T>(a: Foo<'in_, 'out, (&'in_ T, &'out T)>, sadness: &'in_ T) { + | ^^^^^^^^^^^^^^^^^-------^^-------^^ + | | | + | | these two types are declared with different lifetimes... + | ...but data from `a` flows into `a` here + +error: aborting due to 3 previous errors For more information about this error, try `rustc --explain E0623`. diff --git a/src/test/ui/implied-bounds/impl-implied-bounds-compatibility-unnormalized.rs b/src/test/ui/implied-bounds/impl-implied-bounds-compatibility-unnormalized.rs new file mode 100644 index 000000000..6ccbb5bb2 --- /dev/null +++ b/src/test/ui/implied-bounds/impl-implied-bounds-compatibility-unnormalized.rs @@ -0,0 +1,22 @@ +#![deny(implied_bounds_entailment)] + +trait Project { + type Ty; +} +impl Project for &'_ &'_ () { + type Ty = (); +} +trait Trait { + fn get<'s>(s: &'s str, _: ()) -> &'static str; +} +impl Trait for () { + fn get<'s>(s: &'s str, _: <&'static &'s () as Project>::Ty) -> &'static str { + //~^ ERROR impl method assumes more implied bounds than the corresponding trait method + //~| WARN this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + s + } +} +fn main() { + let val = <() as Trait>::get(&String::from("blah blah blah"), ()); + println!("{}", val); +} diff --git a/src/test/ui/implied-bounds/impl-implied-bounds-compatibility-unnormalized.stderr b/src/test/ui/implied-bounds/impl-implied-bounds-compatibility-unnormalized.stderr new file mode 100644 index 000000000..0ac31c642 --- /dev/null +++ b/src/test/ui/implied-bounds/impl-implied-bounds-compatibility-unnormalized.stderr @@ -0,0 +1,16 @@ +error: impl method assumes more implied bounds than the corresponding trait method + --> $DIR/impl-implied-bounds-compatibility-unnormalized.rs:13:5 + | +LL | fn get<'s>(s: &'s str, _: <&'static &'s () as Project>::Ty) -> &'static str { + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #105572 <https://github.com/rust-lang/rust/issues/105572> +note: the lint level is defined here + --> $DIR/impl-implied-bounds-compatibility-unnormalized.rs:1:9 + | +LL | #![deny(implied_bounds_entailment)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^ + +error: aborting due to previous error + diff --git a/src/test/ui/implied-bounds/impl-implied-bounds-compatibility.rs b/src/test/ui/implied-bounds/impl-implied-bounds-compatibility.rs new file mode 100644 index 000000000..d097bc16a --- /dev/null +++ b/src/test/ui/implied-bounds/impl-implied-bounds-compatibility.rs @@ -0,0 +1,21 @@ +#![deny(implied_bounds_entailment)] + +use std::cell::RefCell; + +pub struct MessageListeners<'a> { + listeners: RefCell<Vec<Box<dyn FnMut(()) + 'a>>>, +} + +pub trait MessageListenersInterface { + fn listeners<'c>(&'c self) -> &'c MessageListeners<'c>; +} + +impl<'a> MessageListenersInterface for MessageListeners<'a> { + fn listeners<'b>(&'b self) -> &'a MessageListeners<'b> { + //~^ ERROR impl method assumes more implied bounds than the corresponding trait method + //~| WARN this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + self + } +} + +fn main() {} diff --git a/src/test/ui/implied-bounds/impl-implied-bounds-compatibility.stderr b/src/test/ui/implied-bounds/impl-implied-bounds-compatibility.stderr new file mode 100644 index 000000000..0dfa8167a --- /dev/null +++ b/src/test/ui/implied-bounds/impl-implied-bounds-compatibility.stderr @@ -0,0 +1,16 @@ +error: impl method assumes more implied bounds than the corresponding trait method + --> $DIR/impl-implied-bounds-compatibility.rs:14:5 + | +LL | fn listeners<'b>(&'b self) -> &'a MessageListeners<'b> { + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! + = note: for more information, see issue #105572 <https://github.com/rust-lang/rust/issues/105572> +note: the lint level is defined here + --> $DIR/impl-implied-bounds-compatibility.rs:1:9 + | +LL | #![deny(implied_bounds_entailment)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^ + +error: aborting due to previous error + |