diff options
Diffstat (limited to 'tests/ui/impl-trait')
6 files changed, 34 insertions, 5 deletions
diff --git a/tests/ui/impl-trait/impl-fn-hrtb-bounds.rs b/tests/ui/impl-trait/impl-fn-hrtb-bounds.rs index da7530b4e7a..a7f38b5c16a 100644 --- a/tests/ui/impl-trait/impl-fn-hrtb-bounds.rs +++ b/tests/ui/impl-trait/impl-fn-hrtb-bounds.rs @@ -13,6 +13,7 @@ fn b() -> impl for<'a> Fn(&'a u8) -> (impl Debug + 'a) { fn c() -> impl for<'a> Fn(&'a u8) -> (impl Debug + '_) { //~^ ERROR `impl Trait` cannot capture higher-ranked lifetime from outer `impl Trait` + //~| WARNING elided lifetime has a name |x| x } diff --git a/tests/ui/impl-trait/impl-fn-hrtb-bounds.stderr b/tests/ui/impl-trait/impl-fn-hrtb-bounds.stderr index 7d108b30b76..d0f8f7689d1 100644 --- a/tests/ui/impl-trait/impl-fn-hrtb-bounds.stderr +++ b/tests/ui/impl-trait/impl-fn-hrtb-bounds.stderr @@ -1,5 +1,5 @@ error[E0106]: missing lifetime specifier - --> $DIR/impl-fn-hrtb-bounds.rs:19:38 + --> $DIR/impl-fn-hrtb-bounds.rs:20:38 | LL | fn d() -> impl Fn() -> (impl Debug + '_) { | ^^ expected named lifetime parameter @@ -10,6 +10,14 @@ help: consider using the `'static` lifetime, but this is uncommon unless you're LL | fn d() -> impl Fn() -> (impl Debug + 'static) { | ~~~~~~~ +warning: elided lifetime has a name + --> $DIR/impl-fn-hrtb-bounds.rs:14:52 + | +LL | fn c() -> impl for<'a> Fn(&'a u8) -> (impl Debug + '_) { + | -- lifetime `'a` declared here ^^ this elided lifetime gets resolved as `'a` + | + = note: `#[warn(elided_named_lifetimes)]` on by default + error[E0657]: `impl Trait` cannot capture higher-ranked lifetime from outer `impl Trait` --> $DIR/impl-fn-hrtb-bounds.rs:4:41 | @@ -46,7 +54,7 @@ note: lifetime declared here LL | fn c() -> impl for<'a> Fn(&'a u8) -> (impl Debug + '_) { | ^^ -error: aborting due to 4 previous errors +error: aborting due to 4 previous errors; 1 warning emitted Some errors have detailed explanations: E0106, E0657. For more information about an error, try `rustc --explain E0106`. diff --git a/tests/ui/impl-trait/impl-fn-predefined-lifetimes.rs b/tests/ui/impl-trait/impl-fn-predefined-lifetimes.rs index 8aba3de530b..2f17c0ff508 100644 --- a/tests/ui/impl-trait/impl-fn-predefined-lifetimes.rs +++ b/tests/ui/impl-trait/impl-fn-predefined-lifetimes.rs @@ -3,6 +3,7 @@ use std::fmt::Debug; fn a<'a>() -> impl Fn(&'a u8) -> (impl Debug + '_) { //~^ ERROR cannot resolve opaque type + //~| WARNING elided lifetime has a name |x| x //~^ ERROR expected generic lifetime parameter, found `'_` } diff --git a/tests/ui/impl-trait/impl-fn-predefined-lifetimes.stderr b/tests/ui/impl-trait/impl-fn-predefined-lifetimes.stderr index c2386e8c88b..50a9f3ebeab 100644 --- a/tests/ui/impl-trait/impl-fn-predefined-lifetimes.stderr +++ b/tests/ui/impl-trait/impl-fn-predefined-lifetimes.stderr @@ -1,9 +1,17 @@ +warning: elided lifetime has a name + --> $DIR/impl-fn-predefined-lifetimes.rs:4:48 + | +LL | fn a<'a>() -> impl Fn(&'a u8) -> (impl Debug + '_) { + | -- lifetime `'a` declared here ^^ this elided lifetime gets resolved as `'a` + | + = note: `#[warn(elided_named_lifetimes)]` on by default + error[E0792]: expected generic lifetime parameter, found `'_` - --> $DIR/impl-fn-predefined-lifetimes.rs:6:9 + --> $DIR/impl-fn-predefined-lifetimes.rs:7:9 | LL | fn a<'a>() -> impl Fn(&'a u8) -> (impl Debug + '_) { | -- this generic parameter must be used with a generic lifetime parameter -LL | +... LL | |x| x | ^ @@ -13,7 +21,7 @@ error[E0720]: cannot resolve opaque type LL | fn a<'a>() -> impl Fn(&'a u8) -> (impl Debug + '_) { | ^^^^^^^^^^^^^^^ cannot resolve opaque type -error: aborting due to 2 previous errors +error: aborting due to 2 previous errors; 1 warning emitted Some errors have detailed explanations: E0720, E0792. For more information about an error, try `rustc --explain E0720`. diff --git a/tests/ui/impl-trait/rpit-assoc-pair-with-lifetime.rs b/tests/ui/impl-trait/rpit-assoc-pair-with-lifetime.rs index 73c8a6c0aed..e48441f533d 100644 --- a/tests/ui/impl-trait/rpit-assoc-pair-with-lifetime.rs +++ b/tests/ui/impl-trait/rpit-assoc-pair-with-lifetime.rs @@ -1,6 +1,7 @@ //@ check-pass pub fn iter<'a>(v: Vec<(u32, &'a u32)>) -> impl DoubleEndedIterator<Item = (u32, &u32)> { + //~^ WARNING elided lifetime has a name v.into_iter() } diff --git a/tests/ui/impl-trait/rpit-assoc-pair-with-lifetime.stderr b/tests/ui/impl-trait/rpit-assoc-pair-with-lifetime.stderr new file mode 100644 index 00000000000..bff3ffd934a --- /dev/null +++ b/tests/ui/impl-trait/rpit-assoc-pair-with-lifetime.stderr @@ -0,0 +1,10 @@ +warning: elided lifetime has a name + --> $DIR/rpit-assoc-pair-with-lifetime.rs:3:82 + | +LL | pub fn iter<'a>(v: Vec<(u32, &'a u32)>) -> impl DoubleEndedIterator<Item = (u32, &u32)> { + | -- lifetime `'a` declared here ^ this elided lifetime gets resolved as `'a` + | + = note: `#[warn(elided_named_lifetimes)]` on by default + +warning: 1 warning emitted + |