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Rollup merge of #66907 - eddyb:br-nicer-named, r=oli-obk 

rustc: don't just show raw DefIndex's in BrNamed's fmt::Debug impl.

Context: these `fmt::Debug` impls only get used with `-Z verbose` (which some tests use).

I was going to print the path like in #66850 (or rather, use `DefId`'s `fmt::Debug`, which is close but not as nice), but then I realized that most of the `DefId`s were `crate0:DefIndex(0)`, i.e. the crate root.
As the crate root is not a lifetime, they're clearly dummies of some sort, and we don't have to print anything other than the name for them.

This means that out of all the tests, there's only 5 instances of `BrNamed` that now print the full path to the lifetime parameter, and everything else is shorter instead, which doesn't feel too bad.

cc @nikomatsakis
This commit is contained in:
Mazdak Farrokhzad 2019-12-02 04:09:04 +01:00 committed by GitHub
parent 90ac08222a 9034efe3f7
commit 319064f469
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
17 changed files with 26 additions and 22 deletions
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8
src/librustc/ty/structural_impls.rs
View File

@ -3,6 +3,7 @@
//! hand, though we've recently added some macros and proc-macros to help with the tedium.
use crate::hir::def::Namespace;
use crate::hir::def_id::CRATE_DEF_INDEX;
use crate::mir::ProjectionKind;
use crate::mir::interpret;
use crate::ty::{self, Lift, Ty, TyCtxt, InferConst};
@ -95,8 +96,11 @@ impl fmt::Debug for ty::BoundRegion {
match *self {
ty::BrAnon(n) => write!(f, "BrAnon({:?})", n),
ty::BrNamed(did, name) => {
write!(f, "BrNamed({:?}:{:?}, {})",
did.krate, did.index, name)
if did.index == CRATE_DEF_INDEX {
write!(f, "BrNamed({})", name)
} else {
write!(f, "BrNamed({:?}, {})", did, name)
}
}
ty::BrEnv => write!(f, "BrEnv"),
}

2
src/test/ui/nll/closure-requirements/escape-argument-callee.stderr
View File

@ -6,7 +6,7 @@ LL | let mut closure = expect_sig(|p, y| *p = y);
|
= note: defining type: DefId(0:4 ~ escape_argument_callee[317d]::test[0]::{{closure}}[0]) with closure substs [
i16,
for<'r, 's, 't0> extern "rust-call" fn((&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 'r)) mut &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 's)) i32, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 't0)) i32)),
for<'r, 's, 't0> extern "rust-call" fn((&ReLateBound(DebruijnIndex(0), BrNamed('r)) mut &ReLateBound(DebruijnIndex(0), BrNamed('s)) i32, &ReLateBound(DebruijnIndex(0), BrNamed('t0)) i32)),
]
error: lifetime may not live long enough

2
src/test/ui/nll/closure-requirements/escape-argument.stderr
View File

@ -6,7 +6,7 @@ LL | let mut closure = expect_sig(|p, y| *p = y);
|
= note: defining type: DefId(0:4 ~ escape_argument[317d]::test[0]::{{closure}}[0]) with closure substs [
i16,
for<'r, 's> extern "rust-call" fn((&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 'r)) mut &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 's)) i32, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 's)) i32)),
for<'r, 's> extern "rust-call" fn((&ReLateBound(DebruijnIndex(0), BrNamed('r)) mut &ReLateBound(DebruijnIndex(0), BrNamed('s)) i32, &ReLateBound(DebruijnIndex(0), BrNamed('s)) i32)),
]
note: No external requirements

2
src/test/ui/nll/closure-requirements/propagate-approximated-fail-no-postdom.stderr
View File

@ -10,7 +10,7 @@ LL | | },
|
= note: defining type: DefId(0:18 ~ propagate_approximated_fail_no_postdom[317d]::supply[0]::{{closure}}[0]) with closure substs [
i16,
for<'r, 's> extern "rust-call" fn((std::cell::Cell<&'_#1r &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 'r)) u32>, std::cell::Cell<&'_#2r &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 'r)) u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 's)) &'_#3r u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 'r)) u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 's)) u32>)),
for<'r, 's> extern "rust-call" fn((std::cell::Cell<&'_#1r &ReLateBound(DebruijnIndex(0), BrNamed('r)) u32>, std::cell::Cell<&'_#2r &ReLateBound(DebruijnIndex(0), BrNamed('r)) u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed('s)) &'_#3r u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed('r)) u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed('s)) u32>)),
]
= note: late-bound region is '_#4r
= note: late-bound region is '_#5r

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

@ -11,7 +11,7 @@ LL | | });
|
= note: defining type: DefId(0:16 ~ propagate_approximated_ref[317d]::supply[0]::{{closure}}[0]) with closure substs [
i16,
for<'r, 's, 't0, 't1, 't2, 't3> extern "rust-call" fn((&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 'r)) std::cell::Cell<&'_#1r &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 's)) u32>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 't0)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 't1)) &'_#2r u32>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 't2)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 's)) u32>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 't3)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 't1)) u32>)),
for<'r, 's, 't0, 't1, 't2, 't3> extern "rust-call" fn((&ReLateBound(DebruijnIndex(0), BrNamed('r)) std::cell::Cell<&'_#1r &ReLateBound(DebruijnIndex(0), BrNamed('s)) u32>, &ReLateBound(DebruijnIndex(0), BrNamed('t0)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed('t1)) &'_#2r u32>, &ReLateBound(DebruijnIndex(0), BrNamed('t2)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed('s)) u32>, &ReLateBound(DebruijnIndex(0), BrNamed('t3)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed('t1)) u32>)),
]
= note: late-bound region is '_#3r
= note: late-bound region is '_#4r

4
src/test/ui/nll/closure-requirements/propagate-approximated-shorter-to-static-comparing-against-free.stderr
View File

@ -10,7 +10,7 @@ LL | | })
|
= note: defining type: DefId(0:9 ~ propagate_approximated_shorter_to_static_comparing_against_free[317d]::case1[0]::{{closure}}[0]) with closure substs [
i32,
for<'r> extern "rust-call" fn((std::cell::Cell<&'_#1r u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 'r)) u32>)),
for<'r> extern "rust-call" fn((std::cell::Cell<&'_#1r u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed('r)) u32>)),
]
error[E0521]: borrowed data escapes outside of closure
@ -48,7 +48,7 @@ LL | | })
|
= note: defining type: DefId(0:11 ~ propagate_approximated_shorter_to_static_comparing_against_free[317d]::case2[0]::{{closure}}[0]) with closure substs [
i32,
for<'r> extern "rust-call" fn((std::cell::Cell<&'_#1r u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 'r)) u32>)),
for<'r> extern "rust-call" fn((std::cell::Cell<&'_#1r u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed('r)) u32>)),
]
= note: number of external vids: 2
= note: where '_#1r: '_#0r

2
src/test/ui/nll/closure-requirements/propagate-approximated-shorter-to-static-no-bound.stderr
View File

@ -12,7 +12,7 @@ LL | | });
|
= note: defining type: DefId(0:16 ~ propagate_approximated_shorter_to_static_no_bound[317d]::supply[0]::{{closure}}[0]) with closure substs [
i16,
for<'r, 's, 't0, 't1, 't2> extern "rust-call" fn((&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 'r)) std::cell::Cell<&'_#1r &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 's)) u32>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 't0)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 's)) u32>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 't1)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 't2)) u32>)),
for<'r, 's, 't0, 't1, 't2> extern "rust-call" fn((&ReLateBound(DebruijnIndex(0), BrNamed('r)) std::cell::Cell<&'_#1r &ReLateBound(DebruijnIndex(0), BrNamed('s)) u32>, &ReLateBound(DebruijnIndex(0), BrNamed('t0)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed('s)) u32>, &ReLateBound(DebruijnIndex(0), BrNamed('t1)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed('t2)) u32>)),
]
= note: late-bound region is '_#2r
= note: late-bound region is '_#3r

2
src/test/ui/nll/closure-requirements/propagate-approximated-shorter-to-static-wrong-bound.stderr
View File

@ -12,7 +12,7 @@ LL | | });
|
= note: defining type: DefId(0:16 ~ propagate_approximated_shorter_to_static_wrong_bound[317d]::supply[0]::{{closure}}[0]) with closure substs [
i16,
for<'r, 's, 't0, 't1, 't2, 't3> extern "rust-call" fn((&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 'r)) std::cell::Cell<&'_#1r &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 's)) u32>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 't0)) std::cell::Cell<&'_#2r &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 't1)) u32>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 't2)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 's)) u32>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 't3)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 't1)) u32>)),
for<'r, 's, 't0, 't1, 't2, 't3> extern "rust-call" fn((&ReLateBound(DebruijnIndex(0), BrNamed('r)) std::cell::Cell<&'_#1r &ReLateBound(DebruijnIndex(0), BrNamed('s)) u32>, &ReLateBound(DebruijnIndex(0), BrNamed('t0)) std::cell::Cell<&'_#2r &ReLateBound(DebruijnIndex(0), BrNamed('t1)) u32>, &ReLateBound(DebruijnIndex(0), BrNamed('t2)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed('s)) u32>, &ReLateBound(DebruijnIndex(0), BrNamed('t3)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed('t1)) u32>)),
]
= note: late-bound region is '_#3r
= note: late-bound region is '_#4r

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

@ -11,7 +11,7 @@ LL | | });
|
= note: defining type: DefId(0:16 ~ propagate_approximated_val[317d]::test[0]::{{closure}}[0]) with closure substs [
i16,
for<'r, 's> extern "rust-call" fn((std::cell::Cell<&'_#1r &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 'r)) u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 's)) &'_#2r u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 'r)) u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 's)) u32>)),
for<'r, 's> extern "rust-call" fn((std::cell::Cell<&'_#1r &ReLateBound(DebruijnIndex(0), BrNamed('r)) u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed('s)) &'_#2r u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed('r)) u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed('s)) u32>)),
]
= note: late-bound region is '_#3r
= note: late-bound region is '_#4r

2
src/test/ui/nll/closure-requirements/propagate-despite-same-free-region.stderr
View File

@ -10,7 +10,7 @@ LL | | },
|
= note: defining type: DefId(0:14 ~ propagate_despite_same_free_region[317d]::supply[0]::{{closure}}[0]) with closure substs [
i16,
for<'r, 's> extern "rust-call" fn((std::cell::Cell<&'_#1r &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 'r)) u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 's)) &'_#2r u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 'r)) u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 's)) u32>)),
for<'r, 's> extern "rust-call" fn((std::cell::Cell<&'_#1r &ReLateBound(DebruijnIndex(0), BrNamed('r)) u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed('s)) &'_#2r u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed('r)) u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed('s)) u32>)),
]
= note: late-bound region is '_#3r
= note: number of external vids: 4

2
src/test/ui/nll/closure-requirements/propagate-fail-to-approximate-longer-no-bounds.stderr
View File

@ -11,7 +11,7 @@ LL | | });
|
= note: defining type: DefId(0:16 ~ propagate_fail_to_approximate_longer_no_bounds[317d]::supply[0]::{{closure}}[0]) with closure substs [
i16,
for<'r, 's, 't0, 't1, 't2> extern "rust-call" fn((&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 'r)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 's)) &'_#1r u32>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 't0)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 't1)) u32>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 't2)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 's)) u32>)),
for<'r, 's, 't0, 't1, 't2> extern "rust-call" fn((&ReLateBound(DebruijnIndex(0), BrNamed('r)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed('s)) &'_#1r u32>, &ReLateBound(DebruijnIndex(0), BrNamed('t0)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed('t1)) u32>, &ReLateBound(DebruijnIndex(0), BrNamed('t2)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed('s)) u32>)),
]
= note: late-bound region is '_#2r
= note: late-bound region is '_#3r

2
src/test/ui/nll/closure-requirements/propagate-fail-to-approximate-longer-wrong-bounds.stderr
View File

@ -11,7 +11,7 @@ LL | | });
|
= note: defining type: DefId(0:16 ~ propagate_fail_to_approximate_longer_wrong_bounds[317d]::supply[0]::{{closure}}[0]) with closure substs [
i16,
for<'r, 's, 't0, 't1, 't2, 't3> extern "rust-call" fn((&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 'r)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 's)) &'_#1r u32>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 't0)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 't1)) &'_#2r u32>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 't2)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 's)) u32>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 't3)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 't1)) u32>)),
for<'r, 's, 't0, 't1, 't2, 't3> extern "rust-call" fn((&ReLateBound(DebruijnIndex(0), BrNamed('r)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed('s)) &'_#1r u32>, &ReLateBound(DebruijnIndex(0), BrNamed('t0)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed('t1)) &'_#2r u32>, &ReLateBound(DebruijnIndex(0), BrNamed('t2)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed('s)) u32>, &ReLateBound(DebruijnIndex(0), BrNamed('t3)) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BrNamed('t1)) u32>)),
]
= note: late-bound region is '_#3r
= note: late-bound region is '_#4r

2
src/test/ui/nll/closure-requirements/return-wrong-bound-region.stderr
View File

@ -6,7 +6,7 @@ LL | expect_sig(|a, b| b); // ought to return `a`
|
= note: defining type: DefId(0:4 ~ return_wrong_bound_region[317d]::test[0]::{{closure}}[0]) with closure substs [
i16,
for<'r, 's> extern "rust-call" fn((&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 'r)) i32, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 's)) i32)) -> &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 'r)) i32,
for<'r, 's> extern "rust-call" fn((&ReLateBound(DebruijnIndex(0), BrNamed('r)) i32, &ReLateBound(DebruijnIndex(0), BrNamed('s)) i32)) -> &ReLateBound(DebruijnIndex(0), BrNamed('r)) i32,
]
error: lifetime may not live long enough

2
src/test/ui/nll/ty-outlives/projection-one-region-closure.stderr
View File

@ -38,7 +38,7 @@ error[E0309]: the parameter type `T` may not live long enough
LL | with_signature(cell, t, |cell, t| require(cell, t));
| ^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= help: consider adding an explicit lifetime bound `T: ReFree(DefId(0:15 ~ projection_one_region_closure[317d]::no_relationships_late[0]), BrNamed(crate0:DefIndex(16), 'a))`...
= help: consider adding an explicit lifetime bound `T: ReFree(DefId(0:15 ~ projection_one_region_closure[317d]::no_relationships_late[0]), BrNamed(DefId(0:16 ~ projection_one_region_closure[317d]::no_relationships_late[0]::'a[0]), 'a))`...
error: lifetime may not live long enough
--> $DIR/projection-one-region-closure.rs:45:39

2
src/test/ui/nll/ty-outlives/projection-two-region-trait-bound-closure.stderr
View File

@ -39,7 +39,7 @@ error[E0309]: the associated type `<T as Anything<'_#5r, '_#6r>>::AssocType` may
LL | with_signature(cell, t, |cell, t| require(cell, t));
| ^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= help: consider adding an explicit lifetime bound `<T as Anything<'_#5r, '_#6r>>::AssocType: ReFree(DefId(0:17 ~ projection_two_region_trait_bound_closure[317d]::no_relationships_late[0]), BrNamed(crate0:DefIndex(18), 'a))`...
= help: consider adding an explicit lifetime bound `<T as Anything<'_#5r, '_#6r>>::AssocType: ReFree(DefId(0:17 ~ projection_two_region_trait_bound_closure[317d]::no_relationships_late[0]), BrNamed(DefId(0:18 ~ projection_two_region_trait_bound_closure[317d]::no_relationships_late[0]::'a[0]), 'a))`...
note: External requirements
--> $DIR/projection-two-region-trait-bound-closure.rs:48:29

6
src/test/ui/nll/ty-outlives/ty-param-closure-approximate-lower-bound.stderr
View File

@ -7,7 +7,7 @@ LL | twice(cell, value, |a, b| invoke(a, b));
= note: defining type: DefId(0:11 ~ ty_param_closure_approximate_lower_bound[317d]::generic[0]::{{closure}}[0]) with closure substs [
T,
i16,
for<'r, 's> extern "rust-call" fn((std::option::Option<std::cell::Cell<&'_#1r &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 'r)) ()>>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 's)) T)),
for<'r, 's> extern "rust-call" fn((std::option::Option<std::cell::Cell<&'_#1r &ReLateBound(DebruijnIndex(0), BrNamed('r)) ()>>, &ReLateBound(DebruijnIndex(0), BrNamed('s)) T)),
]
= note: number of external vids: 2
= note: where T: '_#1r
@ -34,7 +34,7 @@ LL | twice(cell, value, |a, b| invoke(a, b));
= note: defining type: DefId(0:15 ~ ty_param_closure_approximate_lower_bound[317d]::generic_fail[0]::{{closure}}[0]) with closure substs [
T,
i16,
for<'r, 's> extern "rust-call" fn((std::option::Option<std::cell::Cell<&'_#1r &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 'r)) ()>>, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0), 's)) T)),
for<'r, 's> extern "rust-call" fn((std::option::Option<std::cell::Cell<&'_#1r &ReLateBound(DebruijnIndex(0), BrNamed('r)) ()>>, &ReLateBound(DebruijnIndex(0), BrNamed('s)) T)),
]
= note: late-bound region is '_#2r
= note: number of external vids: 3
@ -59,7 +59,7 @@ error[E0309]: the parameter type `T` may not live long enough
LL | twice(cell, value, |a, b| invoke(a, b));
| ^^^^^^^^^^^^^^^^^^^
|
= help: consider adding an explicit lifetime bound `T: ReFree(DefId(0:12 ~ ty_param_closure_approximate_lower_bound[317d]::generic_fail[0]), BrNamed(crate0:DefIndex(13), 'a))`...
= help: consider adding an explicit lifetime bound `T: ReFree(DefId(0:12 ~ ty_param_closure_approximate_lower_bound[317d]::generic_fail[0]), BrNamed(DefId(0:13 ~ ty_param_closure_approximate_lower_bound[317d]::generic_fail[0]::'a[0]), 'a))`...
error: aborting due to previous error

4
src/test/ui/nll/ty-outlives/ty-param-closure-outlives-from-where-clause.stderr
View File

@ -49,7 +49,7 @@ LL | | require(&x, &y)
LL | | })
| |_____^
|
= help: consider adding an explicit lifetime bound `T: ReFree(DefId(0:11 ~ ty_param_closure_outlives_from_where_clause[317d]::no_region[0]), BrNamed(crate0:DefIndex(12), 'a))`...
= help: consider adding an explicit lifetime bound `T: ReFree(DefId(0:11 ~ ty_param_closure_outlives_from_where_clause[317d]::no_region[0]), BrNamed(DefId(0:12 ~ ty_param_closure_outlives_from_where_clause[317d]::no_region[0]::'a[0]), 'a))`...
note: External requirements
--> $DIR/ty-param-closure-outlives-from-where-clause.rs:43:26
@ -139,7 +139,7 @@ LL | | require(&x, &y)
LL | | })
| |_____^
|
= help: consider adding an explicit lifetime bound `T: ReFree(DefId(0:19 ~ ty_param_closure_outlives_from_where_clause[317d]::wrong_region[0]), BrNamed(crate0:DefIndex(20), 'a))`...
= help: consider adding an explicit lifetime bound `T: ReFree(DefId(0:19 ~ ty_param_closure_outlives_from_where_clause[317d]::wrong_region[0]), BrNamed(DefId(0:20 ~ ty_param_closure_outlives_from_where_clause[317d]::wrong_region[0]::'a[0]), 'a))`...
note: External requirements
--> $DIR/ty-param-closure-outlives-from-where-clause.rs:77:26