rust-lang/rust
1
0
Fork 0
Code Issues Pull Requests Actions 1 Packages Projects Releases Wiki Activity

Disable some nice region errors in NLL mode.

Browse Source
This commit is contained in:
David Wood
2018-08-06 18:33:05 +02:00
parent 4b8089daf8
commit 37ba9ca334
39 changed files with 209 additions and 191 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
src/librustc/infer/error_reporting/nice_region_error/mod.rs
View File

@@ -64,6 +64,12 @@ impl<'cx, 'gcx, 'tcx> NiceRegionError<'cx, 'gcx, 'tcx> {
Self { tcx, error: None, regions: Some((span, sub, sup)), tables } Self { tcx, error: None, regions: Some((span, sub, sup)), tables }
} }
pub fn try_report_from_nll(&self) -> Option<ErrorReported> {
// Due to the improved diagnostics returned by the MIR borrow checker, only a subset of
// the nice region errors are required when running under the MIR borrow checker.
self.try_report_named_anon_conflict()
}
pub fn try_report(&self) -> Option<ErrorReported> { pub fn try_report(&self) -> Option<ErrorReported> {
self.try_report_named_anon_conflict() self.try_report_named_anon_conflict()
.or_else(|| self.try_report_anon_anon_conflict()) .or_else(|| self.try_report_anon_anon_conflict())

2
src/librustc_mir/borrow_check/nll/region_infer/error_reporting/mod.rs
View File

@@ -310,7 +310,7 @@ impl<'tcx> RegionInferenceContext<'tcx> {
if let (Some(f), Some(o)) = (self.to_error_region(fr), self.to_error_region(outlived_fr)) { if let (Some(f), Some(o)) = (self.to_error_region(fr), self.to_error_region(outlived_fr)) {
let tables = infcx.tcx.typeck_tables_of(mir_def_id); let tables = infcx.tcx.typeck_tables_of(mir_def_id);
let nice = NiceRegionError::new_from_span(infcx.tcx, span, o, f, Some(tables)); let nice = NiceRegionError::new_from_span(infcx.tcx, span, o, f, Some(tables));
if let Some(_error_reported) = nice.try_report() { if let Some(_error_reported) = nice.try_report_from_nll() {
return; return;
} }
} }

2
src/test/compile-fail/nll/where_clauses_in_functions.rs
View File

@@ -21,7 +21,7 @@ where
fn bar<'a, 'b>(x: &'a u32, y: &'b u32) -> (&'a u32, &'b u32) { fn bar<'a, 'b>(x: &'a u32, y: &'b u32) -> (&'a u32, &'b u32) {
foo(x, y) foo(x, y)
//~^ ERROR lifetime mismatch [E0623] //~^ ERROR unsatisfied lifetime constraints
//~| WARNING not reporting region error due to nll //~| WARNING not reporting region error due to nll
} }

2
src/test/compile-fail/nll/where_clauses_in_structs.rs
View File

@@ -21,7 +21,7 @@ struct Foo<'a: 'b, 'b> {
fn bar<'a, 'b>(x: Cell<&'a u32>, y: Cell<&'b u32>) { fn bar<'a, 'b>(x: Cell<&'a u32>, y: Cell<&'b u32>) {
Foo { x, y }; Foo { x, y };
//~^ ERROR lifetime mismatch [E0623] //~^ ERROR unsatisfied lifetime constraints
//~| WARNING not reporting region error due to nll //~| WARNING not reporting region error due to nll
} }

12
src/test/ui/in-band-lifetimes/mismatched.nll.stderr
View File

@@ -18,15 +18,15 @@ LL | fn foo(x: &'a u32, y: &u32) -> &'a u32 { y } //~ ERROR explicit lifetime re
| | | |
| consider changing the type of `y` to `&'a u32` | consider changing the type of `y` to `&'a u32`
error[E0623]: lifetime mismatch error: unsatisfied lifetime constraints
--> $DIR/mismatched.rs:16:46 --> $DIR/mismatched.rs:16:46
| |
LL | fn foo2(x: &'a u32, y: &'b u32) -> &'a u32 { y } //~ ERROR lifetime mismatch LL | fn foo2(x: &'a u32, y: &'b u32) -> &'a u32 { y } //~ ERROR lifetime mismatch
| ------- ------- ^ ...but data from `y` is returned here | -- -- ^ function was supposed to return data with lifetime `'b` but it is returning data with lifetime `'a`
| | | | |
| this parameter and the return type are declared with different lifetimes... | | lifetime `'b` defined here
| lifetime `'a` defined here
error: aborting due to 2 previous errors error: aborting due to 2 previous errors
Some errors occurred: E0621, E0623. For more information about this error, try `rustc --explain E0621`.
For more information about an error, try `rustc --explain E0621`.

11
src/test/ui/lifetime-errors/ex1-return-one-existing-name-if-else-using-impl.nll.stderr
View File

@@ -4,17 +4,16 @@ warning: not reporting region error due to nll
LL | if x > y { x } else { y } //~ ERROR lifetime mismatch LL | if x > y { x } else { y } //~ ERROR lifetime mismatch
| ^ | ^
error[E0623]: lifetime mismatch error: unsatisfied lifetime constraints
--> $DIR/ex1-return-one-existing-name-if-else-using-impl.rs:21:12 --> $DIR/ex1-return-one-existing-name-if-else-using-impl.rs:21:12
| |
LL | fn foo<'a>(x: &i32, y: &'a i32) -> &'a i32 { LL | fn foo<'a>(x: &i32, y: &'a i32) -> &'a i32 {
| ---- ------- | -- - let's call the lifetime of this reference `'1`
| | | |
| this parameter and the return type are declared with different lifetimes... | lifetime `'a` defined here
LL | LL |
LL | if x > y { x } else { y } //~ ERROR lifetime mismatch LL | if x > y { x } else { y } //~ ERROR lifetime mismatch
| ^^^^^ ...but data from `x` is returned here | ^^^^^ requires that `'1` must outlive `'a`
error: aborting due to previous error error: aborting due to previous error
For more information about this error, try `rustc --explain E0623`.

11
src/test/ui/lifetime-errors/ex1-return-one-existing-name-return-type-is-anon.nll.stderr
View File

@@ -4,17 +4,16 @@ warning: not reporting region error due to nll
LL | x //~ ERROR lifetime mismatch LL | x //~ ERROR lifetime mismatch
| ^ | ^
error[E0623]: lifetime mismatch error: unsatisfied lifetime constraints
--> $DIR/ex1-return-one-existing-name-return-type-is-anon.rs:18:5 --> $DIR/ex1-return-one-existing-name-return-type-is-anon.rs:18:5
| |
LL | fn foo<'a>(&self, x: &'a i32) -> &i32 { LL | fn foo<'a>(&self, x: &'a i32) -> &i32 {
| ------- ---- | -- - let's call the lifetime of this reference `'1`
| | | |
| this parameter and the return type are declared with different lifetimes... | lifetime `'a` defined here
LL | LL |
LL | x //~ ERROR lifetime mismatch LL | x //~ ERROR lifetime mismatch
| ^ ...but data from `x` is returned here | ^ function was supposed to return data with lifetime `'a` but it is returning data with lifetime `'1`
error: aborting due to previous error error: aborting due to previous error
For more information about this error, try `rustc --explain E0623`.

11
src/test/ui/lifetime-errors/ex1-return-one-existing-name-self-is-anon.nll.stderr
View File

@@ -4,17 +4,16 @@ warning: not reporting region error due to nll
LL | if true { x } else { self } //~ ERROR lifetime mismatch LL | if true { x } else { self } //~ ERROR lifetime mismatch
| ^^^^ | ^^^^
error[E0623]: lifetime mismatch error: unsatisfied lifetime constraints
--> $DIR/ex1-return-one-existing-name-self-is-anon.rs:18:9 --> $DIR/ex1-return-one-existing-name-self-is-anon.rs:18:9
| |
LL | fn foo<'a>(&self, x: &'a Foo) -> &'a Foo { LL | fn foo<'a>(&self, x: &'a Foo) -> &'a Foo {
| ----- ------- | -- - let's call the lifetime of this reference `'1`
| | | |
| this parameter and the return type are declared with different lifetimes... | lifetime `'a` defined here
LL | LL |
LL | if true { x } else { self } //~ ERROR lifetime mismatch LL | if true { x } else { self } //~ ERROR lifetime mismatch
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^ ...but data from `self` is returned here | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ requires that `'1` must outlive `'a`
error: aborting due to previous error error: aborting due to previous error
For more information about this error, try `rustc --explain E0623`.

9
src/test/ui/lifetime-errors/ex2b-push-no-existing-names.nll.stderr
View File

@@ -4,14 +4,15 @@ warning: not reporting region error due to nll
LL | x.push(y); //~ ERROR lifetime mismatch LL | x.push(y); //~ ERROR lifetime mismatch
| ^ | ^
error[E0623]: lifetime mismatch error: unsatisfied lifetime constraints
--> $DIR/ex2b-push-no-existing-names.rs:16:5 --> $DIR/ex2b-push-no-existing-names.rs:16:5
| |
LL | fn foo(x: &mut Vec<Ref<i32>>, y: Ref<i32>) { LL | fn foo(x: &mut Vec<Ref<i32>>, y: Ref<i32>) {
| -------- -------- these two types are declared with different lifetimes... | -------- -------- lifetime `'1` appears in this type
| |
| lifetime `'2` appears in this type
LL | x.push(y); //~ ERROR lifetime mismatch LL | x.push(y); //~ ERROR lifetime mismatch
| ^^^^^^^^^ ...but data from `y` flows into `x` here | ^^^^^^^^^ argument requires that `'1` must outlive `'2`
error: aborting due to previous error error: aborting due to previous error
For more information about this error, try `rustc --explain E0623`.

9
src/test/ui/lifetime-errors/ex2c-push-inference-variable.nll.stderr
View File

@@ -4,15 +4,16 @@ warning: not reporting region error due to nll
LL | let z = Ref { data: y.data }; LL | let z = Ref { data: y.data };
| ^^^ | ^^^
error[E0623]: lifetime mismatch error: unsatisfied lifetime constraints
--> $DIR/ex2c-push-inference-variable.rs:17:5 --> $DIR/ex2c-push-inference-variable.rs:17:5
| |
LL | fn foo<'a, 'b, 'c>(x: &'a mut Vec<Ref<'b, i32>>, y: Ref<'c, i32>) { LL | fn foo<'a, 'b, 'c>(x: &'a mut Vec<Ref<'b, i32>>, y: Ref<'c, i32>) {
| ------------ ------------ these two types are declared with different lifetimes... | -- -- lifetime `'c` defined here
| |
| lifetime `'b` defined here
LL | let z = Ref { data: y.data }; LL | let z = Ref { data: y.data };
LL | x.push(z); //~ ERROR lifetime mismatch LL | x.push(z); //~ ERROR lifetime mismatch
| ^^^^^^^^^ ...but data from `y` flows into `x` here | ^^^^^^^^^ argument requires that `'c` must outlive `'b`
error: aborting due to previous error error: aborting due to previous error
For more information about this error, try `rustc --explain E0623`.

9
src/test/ui/lifetime-errors/ex2d-push-inference-variable-2.nll.stderr
View File

@@ -4,15 +4,16 @@ warning: not reporting region error due to nll
LL | let b = Ref { data: y.data }; LL | let b = Ref { data: y.data };
| ^^^ | ^^^
error[E0623]: lifetime mismatch error: unsatisfied lifetime constraints
--> $DIR/ex2d-push-inference-variable-2.rs:18:5 --> $DIR/ex2d-push-inference-variable-2.rs:18:5
| |
LL | fn foo<'a, 'b, 'c>(x: &'a mut Vec<Ref<'b, i32>>, y: Ref<'c, i32>) { LL | fn foo<'a, 'b, 'c>(x: &'a mut Vec<Ref<'b, i32>>, y: Ref<'c, i32>) {
| ------------ ------------ these two types are declared with different lifetimes... | -- -- lifetime `'c` defined here
| |
| lifetime `'b` defined here
... ...
LL | a.push(b); LL | a.push(b);
| ^^^^^^^^^ ...but data from `y` flows into `x` here | ^^^^^^^^^ argument requires that `'c` must outlive `'b`
error: aborting due to previous error error: aborting due to previous error
For more information about this error, try `rustc --explain E0623`.

9
src/test/ui/lifetime-errors/ex2e-push-inference-variable-3.nll.stderr
View File

@@ -4,15 +4,16 @@ warning: not reporting region error due to nll
LL | let b = Ref { data: y.data }; LL | let b = Ref { data: y.data };
| ^^^ | ^^^
error[E0623]: lifetime mismatch error: unsatisfied lifetime constraints
--> $DIR/ex2e-push-inference-variable-3.rs:18:5 --> $DIR/ex2e-push-inference-variable-3.rs:18:5
| |
LL | fn foo<'a, 'b, 'c>(x: &'a mut Vec<Ref<'b, i32>>, y: Ref<'c, i32>) { LL | fn foo<'a, 'b, 'c>(x: &'a mut Vec<Ref<'b, i32>>, y: Ref<'c, i32>) {
| ------------ ------------ these two types are declared with different lifetimes... | -- -- lifetime `'c` defined here
| |
| lifetime `'b` defined here
... ...
LL | Vec::push(a, b); LL | Vec::push(a, b);
| ^^^^^^^^^^^^^^^ ...but data from `y` flows into `x` here | ^^^^^^^^^^^^^^^ argument requires that `'c` must outlive `'b`
error: aborting due to previous error error: aborting due to previous error
For more information about this error, try `rustc --explain E0623`.

9
src/test/ui/lifetime-errors/ex3-both-anon-regions-2.nll.stderr
View File

@@ -4,14 +4,15 @@ warning: not reporting region error due to nll
LL | *v = x; //~ ERROR lifetime mismatch LL | *v = x; //~ ERROR lifetime mismatch
| ^ | ^
error[E0623]: lifetime mismatch error: unsatisfied lifetime constraints
--> $DIR/ex3-both-anon-regions-2.rs:12:5 --> $DIR/ex3-both-anon-regions-2.rs:12:5
| |
LL | fn foo(&mut (ref mut v, w): &mut (&u8, &u8), x: &u8) { LL | fn foo(&mut (ref mut v, w): &mut (&u8, &u8), x: &u8) {
| --- --- these two types are declared with different lifetimes... | - - let's call the lifetime of this reference `'1`
| |
| let's call the lifetime of this reference `'2`
LL | *v = x; //~ ERROR lifetime mismatch LL | *v = x; //~ ERROR lifetime mismatch
| ^^^^^^ ...but data from `x` flows here | ^^^^^^ requires that `'1` must outlive `'2`
error: aborting due to previous error error: aborting due to previous error
For more information about this error, try `rustc --explain E0623`.

17
src/test/ui/lifetime-errors/ex3-both-anon-regions-3.nll.stderr
View File

@@ -10,22 +10,25 @@ warning: not reporting region error due to nll
LL | z.push((x,y)); //~ ERROR lifetime mismatch LL | z.push((x,y)); //~ ERROR lifetime mismatch
| ^ | ^
error[E0623]: lifetime mismatch error: unsatisfied lifetime constraints
--> $DIR/ex3-both-anon-regions-3.rs:12:5 --> $DIR/ex3-both-anon-regions-3.rs:12:5
| |
LL | fn foo(z: &mut Vec<(&u8,&u8)>, (x, y): (&u8, &u8)) { LL | fn foo(z: &mut Vec<(&u8,&u8)>, (x, y): (&u8, &u8)) {
| --- --- these two types are declared with different lifetimes... | - - let's call the lifetime of this reference `'1`
| |
| let's call the lifetime of this reference `'2`
LL | z.push((x,y)); //~ ERROR lifetime mismatch LL | z.push((x,y)); //~ ERROR lifetime mismatch
| ^^^^^^^^^^^^^ ...but data flows into `z` here | ^^^^^^^^^^^^^ argument requires that `'1` must outlive `'2`
error[E0623]: lifetime mismatch error: unsatisfied lifetime constraints
--> $DIR/ex3-both-anon-regions-3.rs:12:5 --> $DIR/ex3-both-anon-regions-3.rs:12:5
| |
LL | fn foo(z: &mut Vec<(&u8,&u8)>, (x, y): (&u8, &u8)) { LL | fn foo(z: &mut Vec<(&u8,&u8)>, (x, y): (&u8, &u8)) {
| --- --- these two types are declared with different lifetimes... | - - let's call the lifetime of this reference `'1`
| |
| let's call the lifetime of this reference `'2`
LL | z.push((x,y)); //~ ERROR lifetime mismatch LL | z.push((x,y)); //~ ERROR lifetime mismatch
| ^^^^^^^^^^^^^ ...but data flows into `z` here | ^^^^^^^^^^^^^ argument requires that `'1` must outlive `'2`
error: aborting due to 2 previous errors error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0623`.

9
src/test/ui/lifetime-errors/ex3-both-anon-regions-both-are-structs-2.nll.stderr
View File

@@ -4,14 +4,15 @@ warning: not reporting region error due to nll
LL | x.b = y.b; //~ ERROR lifetime mismatch LL | x.b = y.b; //~ ERROR lifetime mismatch
| ^^^ | ^^^
error[E0623]: lifetime mismatch error: unsatisfied lifetime constraints
--> $DIR/ex3-both-anon-regions-both-are-structs-2.rs:16:5 --> $DIR/ex3-both-anon-regions-both-are-structs-2.rs:16:5
| |
LL | fn foo(mut x: Ref, y: Ref) { LL | fn foo(mut x: Ref, y: Ref) {
| --- --- these two types are declared with different lifetimes... | --- --- lifetime `'1` appears in this type
| |
| lifetime `'2` appears in this type
LL | x.b = y.b; //~ ERROR lifetime mismatch LL | x.b = y.b; //~ ERROR lifetime mismatch
| ^^^^^^^^^ ...but data from `y` flows into `x` here | ^^^^^^^^^ requires that `'1` must outlive `'2`
error: aborting due to previous error error: aborting due to previous error
For more information about this error, try `rustc --explain E0623`.

8
src/test/ui/lifetime-errors/ex3-both-anon-regions-both-are-structs-3.nll.stderr
View File

@@ -4,16 +4,16 @@ warning: not reporting region error due to nll
LL | x.a = x.b; //~ ERROR lifetime mismatch LL | x.a = x.b; //~ ERROR lifetime mismatch
| ^^^ | ^^^
error[E0623]: lifetime mismatch error: unsatisfied lifetime constraints
--> $DIR/ex3-both-anon-regions-both-are-structs-3.rs:16:5 --> $DIR/ex3-both-anon-regions-both-are-structs-3.rs:16:5
| |
LL | fn foo(mut x: Ref) { LL | fn foo(mut x: Ref) {
| --- | ---
| | | |
| this type is declared with multiple lifetimes... | lifetime `'1` appears in this type
| lifetime `'2` appears in this type
LL | x.a = x.b; //~ ERROR lifetime mismatch LL | x.a = x.b; //~ ERROR lifetime mismatch
| ^^^^^^^^^ ...but data with one lifetime flows into the other here | ^^^^^^^^^ requires that `'1` must outlive `'2`
error: aborting due to previous error error: aborting due to previous error
For more information about this error, try `rustc --explain E0623`.

8
src/test/ui/lifetime-errors/ex3-both-anon-regions-both-are-structs-4.nll.stderr
View File

@@ -4,16 +4,16 @@ warning: not reporting region error due to nll
LL | x.a = x.b; //~ ERROR lifetime mismatch LL | x.a = x.b; //~ ERROR lifetime mismatch
| ^^^ | ^^^
error[E0623]: lifetime mismatch error: unsatisfied lifetime constraints
--> $DIR/ex3-both-anon-regions-both-are-structs-4.rs:16:5 --> $DIR/ex3-both-anon-regions-both-are-structs-4.rs:16:5
| |
LL | fn foo(mut x: Ref) { LL | fn foo(mut x: Ref) {
| --- | ---
| | | |
| this type is declared with multiple lifetimes... | lifetime `'1` appears in this type
| lifetime `'2` appears in this type
LL | x.a = x.b; //~ ERROR lifetime mismatch LL | x.a = x.b; //~ ERROR lifetime mismatch
| ^^^^^^^^^ ...but data with one lifetime flows into the other here | ^^^^^^^^^ requires that `'1` must outlive `'2`
error: aborting due to previous error error: aborting due to previous error
For more information about this error, try `rustc --explain E0623`.

9
src/test/ui/lifetime-errors/ex3-both-anon-regions-both-are-structs-earlybound-regions.nll.stderr
View File

@@ -4,15 +4,16 @@ warning: not reporting region error due to nll
LL | x.push(y); //~ ERROR lifetime mismatch LL | x.push(y); //~ ERROR lifetime mismatch
| ^ | ^
error[E0623]: lifetime mismatch error: unsatisfied lifetime constraints
--> $DIR/ex3-both-anon-regions-both-are-structs-earlybound-regions.rs:18:5 --> $DIR/ex3-both-anon-regions-both-are-structs-earlybound-regions.rs:18:5
| |
LL | fn foo<'a, 'b>(mut x: Vec<Ref<'a>>, y: Ref<'b>) LL | fn foo<'a, 'b>(mut x: Vec<Ref<'a>>, y: Ref<'b>)
| ------- ------- these two types are declared with different lifetimes... | -- -- lifetime `'b` defined here
| |
| lifetime `'a` defined here
... ...
LL | x.push(y); //~ ERROR lifetime mismatch LL | x.push(y); //~ ERROR lifetime mismatch
| ^^^^^^^^^ ...but data from `y` flows into `x` here | ^^^^^^^^^ argument requires that `'b` must outlive `'a`
error: aborting due to previous error error: aborting due to previous error
For more information about this error, try `rustc --explain E0623`.

9
src/test/ui/lifetime-errors/ex3-both-anon-regions-both-are-structs-latebound-regions.nll.stderr
View File

@@ -4,14 +4,15 @@ warning: not reporting region error due to nll
LL | x.push(y); //~ ERROR lifetime mismatch LL | x.push(y); //~ ERROR lifetime mismatch
| ^ | ^
error[E0623]: lifetime mismatch error: unsatisfied lifetime constraints
--> $DIR/ex3-both-anon-regions-both-are-structs-latebound-regions.rs:15:5 --> $DIR/ex3-both-anon-regions-both-are-structs-latebound-regions.rs:15:5
| |
LL | fn foo<'a, 'b>(mut x: Vec<Ref<'a>>, y: Ref<'b>) { LL | fn foo<'a, 'b>(mut x: Vec<Ref<'a>>, y: Ref<'b>) {
| ------- ------- these two types are declared with different lifetimes... | -- -- lifetime `'b` defined here
| |
| lifetime `'a` defined here
LL | x.push(y); //~ ERROR lifetime mismatch LL | x.push(y); //~ ERROR lifetime mismatch
| ^^^^^^^^^ ...but data from `y` flows into `x` here | ^^^^^^^^^ argument requires that `'b` must outlive `'a`
error: aborting due to previous error error: aborting due to previous error
For more information about this error, try `rustc --explain E0623`.

9
src/test/ui/lifetime-errors/ex3-both-anon-regions-both-are-structs.nll.stderr
View File

@@ -4,14 +4,15 @@ warning: not reporting region error due to nll
LL | x.push(y); //~ ERROR lifetime mismatch LL | x.push(y); //~ ERROR lifetime mismatch
| ^ | ^
error[E0623]: lifetime mismatch error: unsatisfied lifetime constraints
--> $DIR/ex3-both-anon-regions-both-are-structs.rs:15:5 --> $DIR/ex3-both-anon-regions-both-are-structs.rs:15:5
| |
LL | fn foo(mut x: Vec<Ref>, y: Ref) { LL | fn foo(mut x: Vec<Ref>, y: Ref) {
| --- --- these two types are declared with different lifetimes... | --- --- lifetime `'1` appears in this type
| |
| lifetime `'2` appears in this type
LL | x.push(y); //~ ERROR lifetime mismatch LL | x.push(y); //~ ERROR lifetime mismatch
| ^^^^^^^^^ ...but data from `y` flows into `x` here | ^^^^^^^^^ argument requires that `'1` must outlive `'2`
error: aborting due to previous error error: aborting due to previous error
For more information about this error, try `rustc --explain E0623`.

9
src/test/ui/lifetime-errors/ex3-both-anon-regions-latebound-regions.nll.stderr
View File

@@ -4,14 +4,15 @@ warning: not reporting region error due to nll
LL | x.push(y); //~ ERROR lifetime mismatch LL | x.push(y); //~ ERROR lifetime mismatch
| ^ | ^
error[E0623]: lifetime mismatch error: unsatisfied lifetime constraints
--> $DIR/ex3-both-anon-regions-latebound-regions.rs:12:5 --> $DIR/ex3-both-anon-regions-latebound-regions.rs:12:5
| |
LL | fn foo<'a,'b>(x: &mut Vec<&'a u8>, y: &'b u8) { LL | fn foo<'a,'b>(x: &mut Vec<&'a u8>, y: &'b u8) {
| ------ ------ these two types are declared with different lifetimes... | -- -- lifetime `'b` defined here
| |
| lifetime `'a` defined here
LL | x.push(y); //~ ERROR lifetime mismatch LL | x.push(y); //~ ERROR lifetime mismatch
| ^^^^^^^^^ ...but data from `y` flows into `x` here | ^^^^^^^^^ argument requires that `'b` must outlive `'a`
error: aborting due to previous error error: aborting due to previous error
For more information about this error, try `rustc --explain E0623`.

11
src/test/ui/lifetime-errors/ex3-both-anon-regions-one-is-struct-2.nll.stderr
View File

@@ -4,15 +4,15 @@ warning: not reporting region error due to nll
LL | y = x.b; //~ ERROR lifetime mismatch LL | y = x.b; //~ ERROR lifetime mismatch
| ^^^ | ^^^
error[E0623]: lifetime mismatch error: unsatisfied lifetime constraints
--> $DIR/ex3-both-anon-regions-one-is-struct-2.rs:14:5 --> $DIR/ex3-both-anon-regions-one-is-struct-2.rs:14:5
| |
LL | fn foo(mut x: Ref, y: &u32) { LL | fn foo(mut x: Ref, y: &u32) {
| --- ---- | --- - let's call the lifetime of this reference `'2`
| | | |
| these two types are declared with different lifetimes... | lifetime `'1` appears in this type
LL | y = x.b; //~ ERROR lifetime mismatch LL | y = x.b; //~ ERROR lifetime mismatch
| ^^^^^^^ ...but data from `x` flows into `y` here | ^^^^^^^ requires that `'1` must outlive `'2`
error[E0384]: cannot assign to immutable argument `y` error[E0384]: cannot assign to immutable argument `y`
--> $DIR/ex3-both-anon-regions-one-is-struct-2.rs:14:5 --> $DIR/ex3-both-anon-regions-one-is-struct-2.rs:14:5
@@ -24,5 +24,4 @@ LL | y = x.b; //~ ERROR lifetime mismatch
error: aborting due to 2 previous errors error: aborting due to 2 previous errors
Some errors occurred: E0384, E0623. For more information about this error, try `rustc --explain E0384`.
For more information about an error, try `rustc --explain E0384`.

9
src/test/ui/lifetime-errors/ex3-both-anon-regions-one-is-struct-3.nll.stderr
View File

@@ -4,14 +4,15 @@ warning: not reporting region error due to nll
LL | y.b = x; //~ ERROR lifetime mismatch LL | y.b = x; //~ ERROR lifetime mismatch
| ^ | ^
error[E0623]: lifetime mismatch error: unsatisfied lifetime constraints
--> $DIR/ex3-both-anon-regions-one-is-struct-3.rs:14:5 --> $DIR/ex3-both-anon-regions-one-is-struct-3.rs:14:5
| |
LL | fn foo(mut y: Ref, x: &u32) { LL | fn foo(mut y: Ref, x: &u32) {
| --- ---- these two types are declared with different lifetimes... | --- - let's call the lifetime of this reference `'1`
| |
| lifetime `'2` appears in this type
LL | y.b = x; //~ ERROR lifetime mismatch LL | y.b = x; //~ ERROR lifetime mismatch
| ^^^^^^^ ...but data from `x` flows into `y` here | ^^^^^^^ requires that `'1` must outlive `'2`
error: aborting due to previous error error: aborting due to previous error
For more information about this error, try `rustc --explain E0623`.

9
src/test/ui/lifetime-errors/ex3-both-anon-regions-one-is-struct-4.nll.stderr
View File

@@ -4,14 +4,15 @@ warning: not reporting region error due to nll
LL | y.b = x; //~ ERROR lifetime mismatch LL | y.b = x; //~ ERROR lifetime mismatch
| ^ | ^
error[E0623]: lifetime mismatch error: unsatisfied lifetime constraints
--> $DIR/ex3-both-anon-regions-one-is-struct-4.rs:14:5 --> $DIR/ex3-both-anon-regions-one-is-struct-4.rs:14:5
| |
LL | fn foo(mut y: Ref, x: &u32) { LL | fn foo(mut y: Ref, x: &u32) {
| --- ---- these two types are declared with different lifetimes... | --- - let's call the lifetime of this reference `'1`
| |
| lifetime `'2` appears in this type
LL | y.b = x; //~ ERROR lifetime mismatch LL | y.b = x; //~ ERROR lifetime mismatch
| ^^^^^^^ ...but data from `x` flows into `y` here | ^^^^^^^ requires that `'1` must outlive `'2`
error: aborting due to previous error error: aborting due to previous error
For more information about this error, try `rustc --explain E0623`.

9
src/test/ui/lifetime-errors/ex3-both-anon-regions-one-is-struct.nll.stderr
View File

@@ -4,14 +4,15 @@ warning: not reporting region error due to nll
LL | x.b = y; //~ ERROR lifetime mismatch LL | x.b = y; //~ ERROR lifetime mismatch
| ^ | ^
error[E0623]: lifetime mismatch error: unsatisfied lifetime constraints
--> $DIR/ex3-both-anon-regions-one-is-struct.rs:17:5 --> $DIR/ex3-both-anon-regions-one-is-struct.rs:17:5
| |
LL | fn foo(mut x: Ref, y: &u32) { LL | fn foo(mut x: Ref, y: &u32) {
| --- ---- these two types are declared with different lifetimes... | --- - let's call the lifetime of this reference `'1`
| |
| lifetime `'2` appears in this type
LL | x.b = y; //~ ERROR lifetime mismatch LL | x.b = y; //~ ERROR lifetime mismatch
| ^^^^^^^ ...but data from `y` flows into `x` here | ^^^^^^^ requires that `'1` must outlive `'2`
error: aborting due to previous error error: aborting due to previous error
For more information about this error, try `rustc --explain E0623`.

11
src/test/ui/lifetime-errors/ex3-both-anon-regions-return-type-is-anon.nll.stderr
View File

@@ -4,16 +4,15 @@ warning: not reporting region error due to nll
LL | x //~ ERROR lifetime mismatch LL | x //~ ERROR lifetime mismatch
| ^ | ^
error[E0623]: lifetime mismatch error: unsatisfied lifetime constraints
--> $DIR/ex3-both-anon-regions-return-type-is-anon.rs:17:5 --> $DIR/ex3-both-anon-regions-return-type-is-anon.rs:17:5
| |
LL | fn foo<'a>(&self, x: &i32) -> &i32 { LL | fn foo<'a>(&self, x: &i32) -> &i32 {
| ---- ---- | - - let's call the lifetime of this reference `'1`
| | | |
| this parameter and the return type are declared with different lifetimes... | let's call the lifetime of this reference `'2`
LL | x //~ ERROR lifetime mismatch LL | x //~ ERROR lifetime mismatch
| ^ ...but data from `x` is returned here | ^ function was supposed to return data with lifetime `'1` but it is returning data with lifetime `'2`
error: aborting due to previous error error: aborting due to previous error
For more information about this error, try `rustc --explain E0623`.

11
src/test/ui/lifetime-errors/ex3-both-anon-regions-self-is-anon.nll.stderr
View File

@@ -4,16 +4,15 @@ warning: not reporting region error due to nll
LL | if true { x } else { self } //~ ERROR lifetime mismatch LL | if true { x } else { self } //~ ERROR lifetime mismatch
| ^ | ^
error[E0623]: lifetime mismatch error: unsatisfied lifetime constraints
--> $DIR/ex3-both-anon-regions-self-is-anon.rs:17:9 --> $DIR/ex3-both-anon-regions-self-is-anon.rs:17:9
| |
LL | fn foo<'a>(&self, x: &Foo) -> &Foo { LL | fn foo<'a>(&self, x: &Foo) -> &Foo {
| ---- ---- | - - let's call the lifetime of this reference `'1`
| | | |
| this parameter and the return type are declared with different lifetimes... | let's call the lifetime of this reference `'2`
LL | if true { x } else { self } //~ ERROR lifetime mismatch LL | if true { x } else { self } //~ ERROR lifetime mismatch
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^ ...but data from `x` is returned here | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ requires that `'1` must outlive `'2`
error: aborting due to previous error error: aborting due to previous error
For more information about this error, try `rustc --explain E0623`.

21
src/test/ui/lifetime-errors/ex3-both-anon-regions-using-fn-items.nll.stderr
View File

@@ -4,14 +4,6 @@ warning: not reporting region error due to nll
LL | y.push(z); //~ ERROR lifetime mismatch LL | y.push(z); //~ ERROR lifetime mismatch
| ^ | ^
error[E0623]: lifetime mismatch
--> $DIR/ex3-both-anon-regions-using-fn-items.rs:11:3
|
LL | fn foo(x:fn(&u8, &u8), y: Vec<&u8>, z: &u8) {
| --- --- these two types are declared with different lifetimes...
LL | y.push(z); //~ ERROR lifetime mismatch
| ^^^^^^^^^ ...but data from `z` flows into `y` here
error[E0596]: cannot borrow `y` as mutable, as it is not declared as mutable error[E0596]: cannot borrow `y` as mutable, as it is not declared as mutable
--> $DIR/ex3-both-anon-regions-using-fn-items.rs:11:3 --> $DIR/ex3-both-anon-regions-using-fn-items.rs:11:3
| |
@@ -20,7 +12,16 @@ LL | fn foo(x:fn(&u8, &u8), y: Vec<&u8>, z: &u8) {
LL | y.push(z); //~ ERROR lifetime mismatch LL | y.push(z); //~ ERROR lifetime mismatch
| ^ cannot borrow as mutable | ^ cannot borrow as mutable
error: unsatisfied lifetime constraints
--> $DIR/ex3-both-anon-regions-using-fn-items.rs:11:3
|
LL | fn foo(x:fn(&u8, &u8), y: Vec<&u8>, z: &u8) {
| - - let's call the lifetime of this reference `'1`
| |
| let's call the lifetime of this reference `'2`
LL | y.push(z); //~ ERROR lifetime mismatch
| ^^^^^^^^^ argument requires that `'1` must outlive `'2`
error: aborting due to 2 previous errors error: aborting due to 2 previous errors
Some errors occurred: E0596, E0623. For more information about this error, try `rustc --explain E0596`.
For more information about an error, try `rustc --explain E0596`.

9
src/test/ui/lifetime-errors/ex3-both-anon-regions-using-impl-items.nll.stderr
View File

@@ -4,14 +4,15 @@ warning: not reporting region error due to nll
LL | x.push(y); //~ ERROR lifetime mismatch LL | x.push(y); //~ ERROR lifetime mismatch
| ^ | ^
error[E0623]: lifetime mismatch error: unsatisfied lifetime constraints
--> $DIR/ex3-both-anon-regions-using-impl-items.rs:15:9 --> $DIR/ex3-both-anon-regions-using-impl-items.rs:15:9
| |
LL | fn foo(x: &mut Vec<&u8>, y: &u8) { LL | fn foo(x: &mut Vec<&u8>, y: &u8) {
| --- --- these two types are declared with different lifetimes... | - - let's call the lifetime of this reference `'1`
| |
| let's call the lifetime of this reference `'2`
LL | x.push(y); //~ ERROR lifetime mismatch LL | x.push(y); //~ ERROR lifetime mismatch
| ^^^^^^^^^ ...but data from `y` flows into `x` here | ^^^^^^^^^ argument requires that `'1` must outlive `'2`
error: aborting due to previous error error: aborting due to previous error
For more information about this error, try `rustc --explain E0623`.

21
src/test/ui/lifetime-errors/ex3-both-anon-regions-using-trait-objects.nll.stderr
View File

@@ -4,14 +4,6 @@ warning: not reporting region error due to nll
LL | y.push(z); //~ ERROR lifetime mismatch LL | y.push(z); //~ ERROR lifetime mismatch
| ^ | ^
error[E0623]: lifetime mismatch
--> $DIR/ex3-both-anon-regions-using-trait-objects.rs:11:3
|
LL | fn foo(x:Box<Fn(&u8, &u8)> , y: Vec<&u8>, z: &u8) {
| --- --- these two types are declared with different lifetimes...
LL | y.push(z); //~ ERROR lifetime mismatch
| ^^^^^^^^^ ...but data from `z` flows into `y` here
error[E0596]: cannot borrow `y` as mutable, as it is not declared as mutable error[E0596]: cannot borrow `y` as mutable, as it is not declared as mutable
--> $DIR/ex3-both-anon-regions-using-trait-objects.rs:11:3 --> $DIR/ex3-both-anon-regions-using-trait-objects.rs:11:3
| |
@@ -20,7 +12,16 @@ LL | fn foo(x:Box<Fn(&u8, &u8)> , y: Vec<&u8>, z: &u8) {
LL | y.push(z); //~ ERROR lifetime mismatch LL | y.push(z); //~ ERROR lifetime mismatch
| ^ cannot borrow as mutable | ^ cannot borrow as mutable
error: unsatisfied lifetime constraints
--> $DIR/ex3-both-anon-regions-using-trait-objects.rs:11:3
|
LL | fn foo(x:Box<Fn(&u8, &u8)> , y: Vec<&u8>, z: &u8) {
| - - let's call the lifetime of this reference `'1`
| |
| let's call the lifetime of this reference `'2`
LL | y.push(z); //~ ERROR lifetime mismatch
| ^^^^^^^^^ argument requires that `'1` must outlive `'2`
error: aborting due to 2 previous errors error: aborting due to 2 previous errors
Some errors occurred: E0596, E0623. For more information about this error, try `rustc --explain E0596`.
For more information about an error, try `rustc --explain E0596`.

9
src/test/ui/lifetime-errors/ex3-both-anon-regions.nll.stderr
View File

@@ -4,14 +4,15 @@ warning: not reporting region error due to nll
LL | x.push(y); //~ ERROR lifetime mismatch LL | x.push(y); //~ ERROR lifetime mismatch
| ^ | ^
error[E0623]: lifetime mismatch error: unsatisfied lifetime constraints
--> $DIR/ex3-both-anon-regions.rs:12:5 --> $DIR/ex3-both-anon-regions.rs:12:5
| |
LL | fn foo(x: &mut Vec<&u8>, y: &u8) { LL | fn foo(x: &mut Vec<&u8>, y: &u8) {
| --- --- these two types are declared with different lifetimes... | - - let's call the lifetime of this reference `'1`
| |
| let's call the lifetime of this reference `'2`
LL | x.push(y); //~ ERROR lifetime mismatch LL | x.push(y); //~ ERROR lifetime mismatch
| ^^^^^^^^^ ...but data from `y` flows into `x` here | ^^^^^^^^^ argument requires that `'1` must outlive `'2`
error: aborting due to previous error error: aborting due to previous error
For more information about this error, try `rustc --explain E0623`.

2
src/test/ui/nll/closure-requirements/propagate-approximated-ref.rs
View File

@@ -51,7 +51,7 @@ fn demand_y<'x, 'y>(_cell_x: &Cell<&'x u32>, _cell_y: &Cell<&'y u32>, _y: &'y u3
#[rustc_regions] #[rustc_regions]
fn supply<'a, 'b>(cell_a: Cell<&'a u32>, cell_b: Cell<&'b u32>) { fn supply<'a, 'b>(cell_a: Cell<&'a u32>, cell_b: Cell<&'b u32>) {
establish_relationships(&cell_a, &cell_b, |_outlives1, _outlives2, x, y| { establish_relationships(&cell_a, &cell_b, |_outlives1, _outlives2, x, y| {
//~^ ERROR lifetime mismatch //~^ ERROR unsatisfied lifetime constraints
// Only works if 'x: 'y: // Only works if 'x: 'y:
demand_y(x, y, x.get()) //~ WARNING not reporting region error due to nll demand_y(x, y, x.get()) //~ WARNING not reporting region error due to nll

35
src/test/ui/nll/closure-requirements/propagate-approximated-ref.stderr
View File

@@ -9,7 +9,7 @@ note: External requirements
| |
LL | establish_relationships(&cell_a, &cell_b, |_outlives1, _outlives2, x, y| { LL | establish_relationships(&cell_a, &cell_b, |_outlives1, _outlives2, x, y| {
| _______________________________________________^ | _______________________________________________^
LL | | //~^ ERROR lifetime mismatch LL | | //~^ ERROR unsatisfied lifetime constraints
LL | | LL | |
LL | | // Only works if 'x: 'y: LL | | // Only works if 'x: 'y:
LL | | demand_y(x, y, x.get()) //~ WARNING not reporting region error due to nll LL | | demand_y(x, y, x.get()) //~ WARNING not reporting region error due to nll
@@ -23,27 +23,12 @@ LL | | });
= note: number of external vids: 5 = note: number of external vids: 5
= note: where '_#1r: '_#2r = note: where '_#1r: '_#2r
error[E0623]: lifetime mismatch
--> $DIR/propagate-approximated-ref.rs:53:5
|
LL | fn supply<'a, 'b>(cell_a: Cell<&'a u32>, cell_b: Cell<&'b u32>) {
| ------- -------
| |
| these two types are declared with different lifetimes...
LL | / establish_relationships(&cell_a, &cell_b, |_outlives1, _outlives2, x, y| {
LL | | //~^ ERROR lifetime mismatch
LL | |
LL | | // Only works if 'x: 'y:
LL | | demand_y(x, y, x.get()) //~ WARNING not reporting region error due to nll
LL | | });
| |______^ ...but data from `cell_a` flows into `cell_b` here
note: No external requirements note: No external requirements
--> $DIR/propagate-approximated-ref.rs:52:1 --> $DIR/propagate-approximated-ref.rs:52:1
| |
LL | / fn supply<'a, 'b>(cell_a: Cell<&'a u32>, cell_b: Cell<&'b u32>) { LL | / fn supply<'a, 'b>(cell_a: Cell<&'a u32>, cell_b: Cell<&'b u32>) {
LL | | establish_relationships(&cell_a, &cell_b, |_outlives1, _outlives2, x, y| { LL | | establish_relationships(&cell_a, &cell_b, |_outlives1, _outlives2, x, y| {
LL | | //~^ ERROR lifetime mismatch LL | | //~^ ERROR unsatisfied lifetime constraints
LL | | LL | |
... | ... |
LL | | }); LL | | });
@@ -52,6 +37,20 @@ LL | | }
| |
= note: defining type: DefId(0/0:6 ~ propagate_approximated_ref[317d]::supply[0]) with substs [] = note: defining type: DefId(0/0:6 ~ propagate_approximated_ref[317d]::supply[0]) with substs []
error: unsatisfied lifetime constraints
--> $DIR/propagate-approximated-ref.rs:53:5
|
LL | fn supply<'a, 'b>(cell_a: Cell<&'a u32>, cell_b: Cell<&'b u32>) {
| -- -- lifetime `'b` defined here
| |
| lifetime `'a` defined here
LL | / establish_relationships(&cell_a, &cell_b, |_outlives1, _outlives2, x, y| {
LL | | //~^ ERROR unsatisfied lifetime constraints
LL | |
LL | | // Only works if 'x: 'y:
LL | | demand_y(x, y, x.get()) //~ WARNING not reporting region error due to nll
LL | | });
| |______^ argument requires that `'a` must outlive `'b`
error: aborting due to previous error error: aborting due to previous error
For more information about this error, try `rustc --explain E0623`.

2
src/test/ui/nll/closure-requirements/propagate-approximated-val.rs
View File

@@ -44,7 +44,7 @@ fn demand_y<'x, 'y>(_outlives1: Cell<&&'x u32>, _outlives2: Cell<&'y &u32>, _y:
#[rustc_regions] #[rustc_regions]
fn test<'a, 'b>(cell_a: Cell<&'a u32>, cell_b: Cell<&'b u32>) { fn test<'a, 'b>(cell_a: Cell<&'a u32>, cell_b: Cell<&'b u32>) {
establish_relationships(cell_a, cell_b, |outlives1, outlives2, x, y| { establish_relationships(cell_a, cell_b, |outlives1, outlives2, x, y| {
//~^ ERROR lifetime mismatch //~^ ERROR unsatisfied lifetime constraints
// Only works if 'x: 'y: // Only works if 'x: 'y:
demand_y(outlives1, outlives2, x.get()) //~ WARNING not reporting region error due to nll demand_y(outlives1, outlives2, x.get()) //~ WARNING not reporting region error due to nll

35
src/test/ui/nll/closure-requirements/propagate-approximated-val.stderr
View File

@@ -9,7 +9,7 @@ note: External requirements
| |
LL | establish_relationships(cell_a, cell_b, |outlives1, outlives2, x, y| { LL | establish_relationships(cell_a, cell_b, |outlives1, outlives2, x, y| {
| _____________________________________________^ | _____________________________________________^
LL | | //~^ ERROR lifetime mismatch LL | | //~^ ERROR unsatisfied lifetime constraints
LL | | LL | |
LL | | // Only works if 'x: 'y: LL | | // Only works if 'x: 'y:
LL | | demand_y(outlives1, outlives2, x.get()) //~ WARNING not reporting region error due to nll LL | | demand_y(outlives1, outlives2, x.get()) //~ WARNING not reporting region error due to nll
@@ -23,27 +23,12 @@ LL | | });
= note: number of external vids: 5 = note: number of external vids: 5
= note: where '_#1r: '_#2r = note: where '_#1r: '_#2r
error[E0623]: lifetime mismatch
--> $DIR/propagate-approximated-val.rs:46:5
|
LL | fn test<'a, 'b>(cell_a: Cell<&'a u32>, cell_b: Cell<&'b u32>) {
| ------- -------
| |
| these two types are declared with different lifetimes...
LL | / establish_relationships(cell_a, cell_b, |outlives1, outlives2, x, y| {
LL | | //~^ ERROR lifetime mismatch
LL | |
LL | | // Only works if 'x: 'y:
LL | | demand_y(outlives1, outlives2, x.get()) //~ WARNING not reporting region error due to nll
LL | | });
| |______^ ...but data from `cell_a` flows into `cell_b` here
note: No external requirements note: No external requirements
--> $DIR/propagate-approximated-val.rs:45:1 --> $DIR/propagate-approximated-val.rs:45:1
| |
LL | / fn test<'a, 'b>(cell_a: Cell<&'a u32>, cell_b: Cell<&'b u32>) { LL | / fn test<'a, 'b>(cell_a: Cell<&'a u32>, cell_b: Cell<&'b u32>) {
LL | | establish_relationships(cell_a, cell_b, |outlives1, outlives2, x, y| { LL | | establish_relationships(cell_a, cell_b, |outlives1, outlives2, x, y| {
LL | | //~^ ERROR lifetime mismatch LL | | //~^ ERROR unsatisfied lifetime constraints
LL | | LL | |
... | ... |
LL | | }); LL | | });
@@ -52,6 +37,20 @@ LL | | }
| |
= note: defining type: DefId(0/0:6 ~ propagate_approximated_val[317d]::test[0]) with substs [] = note: defining type: DefId(0/0:6 ~ propagate_approximated_val[317d]::test[0]) with substs []
error: unsatisfied lifetime constraints
--> $DIR/propagate-approximated-val.rs:46:5
|
LL | fn test<'a, 'b>(cell_a: Cell<&'a u32>, cell_b: Cell<&'b u32>) {
| -- -- lifetime `'b` defined here
| |
| lifetime `'a` defined here
LL | / establish_relationships(cell_a, cell_b, |outlives1, outlives2, x, y| {
LL | | //~^ ERROR unsatisfied lifetime constraints
LL | |
LL | | // Only works if 'x: 'y:
LL | | demand_y(outlives1, outlives2, x.get()) //~ WARNING not reporting region error due to nll
LL | | });
| |______^ argument requires that `'a` must outlive `'b`
error: aborting due to previous error error: aborting due to previous error
For more information about this error, try `rustc --explain E0623`.

2
src/test/ui/nll/closure-requirements/region-lbr1-does-not-outlive-ebr2.rs
View File

@@ -18,7 +18,7 @@
fn foo<'a, 'b>(x: &'a u32, y: &'b u32) -> &'b u32 { fn foo<'a, 'b>(x: &'a u32, y: &'b u32) -> &'b u32 {
&*x &*x
//~^ WARN not reporting region error due to nll //~^ WARN not reporting region error due to nll
//~| ERROR lifetime mismatch //~| ERROR unsatisfied lifetime constraints
} }
fn main() { } fn main() { }

11
src/test/ui/nll/closure-requirements/region-lbr1-does-not-outlive-ebr2.stderr
View File

@@ -4,16 +4,15 @@ warning: not reporting region error due to nll
LL | &*x LL | &*x
| ^^^ | ^^^
error[E0623]: lifetime mismatch error: unsatisfied lifetime constraints
--> $DIR/region-lbr1-does-not-outlive-ebr2.rs:19:5 --> $DIR/region-lbr1-does-not-outlive-ebr2.rs:19:5
| |
LL | fn foo<'a, 'b>(x: &'a u32, y: &'b u32) -> &'b u32 { LL | fn foo<'a, 'b>(x: &'a u32, y: &'b u32) -> &'b u32 {
| ------- ------- | -- -- lifetime `'b` defined here
| | | |
| this parameter and the return type are declared with different lifetimes... | lifetime `'a` defined here
LL | &*x LL | &*x
| ^^^ ...but data from `x` is returned here | ^^^ requires that `'a` must outlive `'b`
error: aborting due to previous error error: aborting due to previous error
For more information about this error, try `rustc --explain E0623`.

2
src/test/ui/nll/issue-52113.rs
View File

@@ -40,7 +40,7 @@ fn produce3<'a, 'b: 'a>(data: &'a mut Vec<&'a u32>, value: &'b u32) -> impl Bazi
} }
fn produce_err<'a, 'b: 'a>(data: &'b mut Vec<&'b u32>, value: &'a u32) -> impl Bazinga + 'b { fn produce_err<'a, 'b: 'a>(data: &'b mut Vec<&'b u32>, value: &'a u32) -> impl Bazinga + 'b {
let x = move || { //~ ERROR lifetime mismatch let x = move || { //~ ERROR unsatisfied lifetime constraints
let value: &'a u32 = value; let value: &'a u32 = value;
data.push(value); data.push(value);
}; };

11
src/test/ui/nll/issue-52113.stderr
View File

@@ -1,11 +1,12 @@
error[E0623]: lifetime mismatch error: unsatisfied lifetime constraints
--> $DIR/issue-52113.rs:43:9 --> $DIR/issue-52113.rs:43:9
| |
LL | fn produce_err<'a, 'b: 'a>(data: &'b mut Vec<&'b u32>, value: &'a u32) -> impl Bazinga + 'b { LL | fn produce_err<'a, 'b: 'a>(data: &'b mut Vec<&'b u32>, value: &'a u32) -> impl Bazinga + 'b {
| -------------------- ------- these two types are declared with different lifetimes... | -- -- lifetime `'b` defined here
LL | let x = move || { //~ ERROR lifetime mismatch | |
| ^ ...but data from `value` flows into `data` here | lifetime `'a` defined here
LL | let x = move || { //~ ERROR unsatisfied lifetime constraints
| ^ requires that `'a` must outlive `'b`
error: aborting due to previous error error: aborting due to previous error
For more information about this error, try `rustc --explain E0623`.