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Esteban Küber e6bd6c2044 Use parenthetical notation for Fn traits 
Always use the `Fn(T) -> R` format when printing closure traits instead of `Fn<(T,), Output = R>`.

Fix #67100:

```
error[E0277]: expected a `Fn()` closure, found `F`
 --> file.rs:6:13
  |
6 |     call_fn(f)
  |     ------- ^ expected an `Fn()` closure, found `F`
  |     |
  |     required by a bound introduced by this call
  |
  = note: wrap the `F` in a closure with no arguments: `|| { /* code */ }`
note: required by a bound in `call_fn`
 --> file.rs:1:15
  |
1 | fn call_fn<F: Fn() -> ()>(f: &F) {
  |               ^^^^^^^^^^ required by this bound in `call_fn`
help: consider further restricting this bound
  |
5 | fn call_any<F: std::any::Any + Fn()>(f: &F) {
  |                              ++++++
```
2024-05-29 22:26:54 +00:00
..
alias-liveness
auxiliary
diagnostics
explicit-generic-args-with-impl-trait
in-ctfe
in-trait Report better WF obligation leaf obligations in new solver 2024-05-16 21:08:42 -04:00
issues borrowck: more eagerly prepopulate opaques 2024-05-06 16:04:57 +00:00
multiple-lifetimes
precise-capturing And finally add tests 2024-05-13 23:57:56 -04:00
rpit
transmute
arg-position-impl-trait-too-long.rs
arg-position-impl-trait-too-long.stderr
associated-impl-trait-type-generic-trait.rs
associated-impl-trait-type-issue-114325.rs
associated-impl-trait-type-trivial.rs
associated-impl-trait-type.rs
associated-type-cycle.rs
associated-type-cycle.stderr
async_scope_creep.rs
auto-trait-coherence.next.stderr
auto-trait-coherence.old.stderr
auto-trait-coherence.rs
auto-trait-leak2.rs
auto-trait-leak2.stderr
auto-trait-leak-rpass.rs
auto-trait-leak.rs
auto-trait-leak.stderr
autoderef.rs
bivariant-lifetime-liveness.rs
bound-normalization-fail.rs
bound-normalization-fail.stderr
bound-normalization-pass.rs
bounds_regression.rs
can-return-unconstrained-closure.rs
capture-lifetime-not-in-hir.rs
capture-lifetime-not-in-hir.stderr
closure-calling-parent-fn.rs
closure-in-impl-trait-arg.rs
closure-in-impl-trait.rs
coherence-treats-tait-ambig.current.stderr
coherence-treats-tait-ambig.rs
coherence-treats-tait-ambig.stderr
cross-return-site-inference.rs
cross-return-site-inference.stderr
deduce-signature-from-supertrait.rs
defined-by-trait-resolution.rs
defining-use-captured-non-universal-region.infer.stderr
defining-use-captured-non-universal-region.rs
defining-use-captured-non-universal-region.statik.stderr
defining-use-uncaptured-non-universal-region-2.rs
defining-use-uncaptured-non-universal-region-3.rs
defining-use-uncaptured-non-universal-region.rs
deprecated_annotation.rs
different_where_bounds.rs
divergence.rs
does-not-live-long-enough.rs
does-not-live-long-enough.stderr
dont-suggest-box-on-empty-else-arm.rs
dont-suggest-box-on-empty-else-arm.stderr
dyn-impl-type-mismatch.rs
dyn-impl-type-mismatch.stderr
dyn-trait-elided-two-inputs-assoc.rs
dyn-trait-elided-two-inputs-param.rs
dyn-trait-elided-two-inputs-ref-assoc.rs borrowck: more eagerly prepopulate opaques 2024-05-06 16:04:57 +00:00
dyn-trait-elided-two-inputs-ref-param.rs
dyn-trait-return-should-be-impl-trait.rs
dyn-trait-return-should-be-impl-trait.stderr
eagerly-reveal-in-local-body.rs
equal-hidden-lifetimes.rs
equality2.rs
equality2.stderr
equality-in-canonical-query.rs
equality-rpass.rs
equality-rpass.stderr
equality.rs When checking whether an impl applies, constrain hidden types of opaque types. 2024-05-23 15:52:10 +00:00
equality.stderr When checking whether an impl applies, constrain hidden types of opaque types. 2024-05-23 15:52:10 +00:00
erased-regions-in-hidden-ty.current.stderr
erased-regions-in-hidden-ty.next.stderr
erased-regions-in-hidden-ty.rs
example-calendar.rs
example-st.rs
example-st.stderr
extra-impl-in-trait-impl.fixed
extra-impl-in-trait-impl.rs
extra-impl-in-trait-impl.stderr
extra-item.rs
extra-item.stderr
failed-to-resolve-instance-ice-105488.rs
failed-to-resolve-instance-ice-105488.stderr
failed-to-resolve-instance-ice-123145.rs
failed-to-resolve-instance-ice-123145.stderr
fallback_inference.rs
fallback_inference.stderr
fallback.rs
feature-self-return-type.rs
feature-self-return-type.stderr
fresh-lifetime-from-bare-trait-obj-114664.rs
fresh-lifetime-from-bare-trait-obj-114664.stderr
future-no-bound-vars-ice-112347.rs add test for ice future has no bound vars. 2024-04-28 10:23:11 +02:00
generic-with-implicit-hrtb-without-dyn.edition2015.stderr
generic-with-implicit-hrtb-without-dyn.edition2021.stderr
generic-with-implicit-hrtb-without-dyn.rs
hidden-lifetimes.rs
hidden-lifetimes.stderr
hidden-type-is-opaque-2.default.stderr
hidden-type-is-opaque-2.next.stderr
hidden-type-is-opaque-2.rs
hidden-type-is-opaque.rs
ice-unexpected-param-type-whensubstituting-in-region-112823.rs
ice-unexpected-param-type-whensubstituting-in-region-112823.stderr
impl_fn_associativity.rs
impl_trait_projections.rs
impl_trait_projections.stderr
impl-fn-hrtb-bounds-2.rs
impl-fn-hrtb-bounds-2.stderr
impl-fn-hrtb-bounds.rs
impl-fn-hrtb-bounds.stderr
impl-fn-parsing-ambiguities.rs
impl-fn-parsing-ambiguities.stderr
impl-fn-predefined-lifetimes.rs
impl-fn-predefined-lifetimes.stderr
impl-generic-mismatch-ab.rs
impl-generic-mismatch-ab.stderr
impl-generic-mismatch.rs
impl-generic-mismatch.stderr
impl-subtyper2.rs
impl-subtyper.rs
impl-trait-in-macro.rs
impl-trait-in-macro.stderr
impl-trait-plus-priority.rs
impl-trait-plus-priority.stderr
implicit-capture-late.rs
implicit-capture-late.stderr
in-assoc-type-unconstrained.rs
in-assoc-type-unconstrained.stderr
in-assoc-type.rs
in-assoc-type.stderr
issue-35668.rs
issue-35668.stderr
issue-36792.rs
issue-46959.rs
issue-49556.rs
issue-49579.rs
issue-49685.rs
issue-51185.rs
issue-54966.rs
issue-54966.stderr
issue-55872-1.rs
issue-55872-1.stderr
issue-55872-2.rs
issue-55872-2.stderr
issue-55872-3.rs
issue-55872-3.stderr
issue-55872.rs
issue-55872.stderr
issue-56445.rs
issue-68532.rs
issue-72911.rs
issue-72911.stderr
issue-87450.rs
issue-87450.stderr
issue-99073-2.rs
issue-99073-2.stderr
issue-99073.rs
issue-99073.stderr
issue-99642-2.rs
issue-99642.rs
issue-99914.rs
issue-99914.stderr Inline get_node_fn_decl into get_fn_decl, simplify/explain logic in report_return_mismatched_types 2024-05-20 20:16:29 -04:00
issue-100075-2.rs
issue-100075-2.stderr
issue-100075.rs
issue-100075.stderr
issue-100187.rs
issue-102605.rs
issue-102605.stderr
issue-103181-1.current.stderr
issue-103181-1.next.stderr
issue-103181-1.rs
issue-103181-2.rs
issue-103181-2.stderr
issue-103599.rs
issue-103599.stderr
issue-108591.rs
issue-108592.rs
lazy_subtyping_of_opaques.rs Add regression tests 2024-05-24 14:01:49 +00:00
lazy_subtyping_of_opaques.stderr Add regression tests 2024-05-24 14:01:49 +00:00
lifetime-ambiguity-regression.rs
lifetimes2.rs
lifetimes.rs Error on using yield without also using #[coroutine] on the closure 2024-04-24 08:05:29 +00:00
mapping-duplicated-lifetimes-issue-114597.rs
method-suggestion-no-duplication.rs
method-suggestion-no-duplication.stderr
multiple-defining-usages-in-body.rs
multiple-defining-usages-in-body.stderr
must_outlive_least_region_or_bound.rs
must_outlive_least_region_or_bound.stderr
needs_least_region_or_bound.rs
negative-reasoning.rs
negative-reasoning.stderr
nested_impl_trait.rs
nested_impl_trait.stderr When checking whether an impl applies, constrain hidden types of opaque types. 2024-05-23 15:52:10 +00:00
nested-hkl-lifetime.rs
nested-return-type2-tait2.rs
nested-return-type2-tait2.stderr
nested-return-type2-tait3.rs
nested-return-type2-tait3.stderr
nested-return-type2-tait.rs
nested-return-type2-tait.stderr
nested-return-type2.rs
nested-return-type3-tait2.rs
nested-return-type3-tait2.stderr
nested-return-type3-tait3.rs
nested-return-type3-tait3.stderr
nested-return-type3-tait.rs
nested-return-type3-tait.stderr
nested-return-type3.rs
nested-return-type4.rs
nested-return-type4.stderr
nested-return-type.rs
nested-rpit-hrtb-2.rs
nested-rpit-hrtb-2.stderr
nested-rpit-hrtb.rs
nested-rpit-hrtb.stderr
nested-rpit-with-anonymous-lifetimes.rs
nesting.rs
no-method-suggested-traits.rs
no-method-suggested-traits.stderr
no-trait.rs
no-trait.stderr
normalize-opaque-with-bound-vars.rs
normalize-tait-in-const.rs Fix tests and bless 2024-04-24 13:12:33 +01:00
normalize-tait-in-const.stderr Use parenthetical notation for Fn traits 2024-05-29 22:26:54 +00:00
not_general_enough_regression_106630.rs
object-unsafe-trait-in-return-position-dyn-trait.rs
object-unsafe-trait-in-return-position-dyn-trait.stderr
object-unsafe-trait-in-return-position-impl-trait.rs
object-unsafe-trait-in-return-position-impl-trait.stderr
opaque-cast-field-access-in-future.rs
opaque-cast-field-access-in-future.stderr
opaque-used-in-extraneous-argument.rs
opaque-used-in-extraneous-argument.stderr
point-to-type-err-cause-on-impl-trait-return.rs
point-to-type-err-cause-on-impl-trait-return.stderr
printing-binder.rs
printing-binder.stderr
private_unused.rs
projection-mismatch-in-impl-where-clause.rs
projection-mismatch-in-impl-where-clause.stderr
projection.rs
question_mark.rs
recursive-auto-trait.rs
recursive-coroutine-boxed.next.stderr Error on using yield without also using #[coroutine] on the closure 2024-04-24 08:05:29 +00:00
recursive-coroutine-boxed.rs Error on using yield without also using #[coroutine] on the closure 2024-04-24 08:05:29 +00:00
recursive-coroutine-indirect.current.stderr Error on using yield without also using #[coroutine] on the closure 2024-04-24 08:05:29 +00:00
recursive-coroutine-indirect.next.stderr Error on using yield without also using #[coroutine] on the closure 2024-04-24 08:05:29 +00:00
recursive-coroutine-indirect.rs Error on using yield without also using #[coroutine] on the closure 2024-04-24 08:05:29 +00:00
recursive-ice-101862.rs
recursive-ice-101862.stderr
recursive-impl-trait-type-direct.rs
recursive-impl-trait-type-indirect.rs Error on using yield without also using #[coroutine] on the closure 2024-04-24 08:05:29 +00:00
recursive-impl-trait-type-indirect.stderr Error on using yield without also using #[coroutine] on the closure 2024-04-24 08:05:29 +00:00
recursive-impl-trait-type-through-non-recursive.rs
recursive-impl-trait-type-through-non-recursive.stderr
recursive-type-alias-impl-trait-declaration-too-subtle-2.rs
recursive-type-alias-impl-trait-declaration-too-subtle.rs
recursive-type-alias-impl-trait-declaration-too-subtle.stderr
recursive-type-alias-impl-trait-declaration.rs When checking whether an impl applies, constrain hidden types of opaque types. 2024-05-23 15:52:10 +00:00
recursive-type-alias-impl-trait-declaration.stderr When checking whether an impl applies, constrain hidden types of opaque types. 2024-05-23 15:52:10 +00:00
region-escape-via-bound-contravariant-closure.rs
region-escape-via-bound-contravariant.rs
region-escape-via-bound.rs
region-escape-via-bound.stderr
return-position-impl-trait-minimal.rs
reveal-during-codegen.rs
rpit-assoc-pair-with-lifetime.rs
rpit-not-sized.rs
rpit-not-sized.stderr
stashed-diag-issue-121504.rs
stashed-diag-issue-121504.stderr
static-lifetime-return-position-impl-trait.rs
static-return-lifetime-infered.rs
static-return-lifetime-infered.stderr
stranded-opaque.rs
stranded-opaque.stderr
suggest-calling-rpit-closure.rs
suggest-calling-rpit-closure.stderr
trait_resolution.rs
trait_type.rs
trait_type.stderr
two_tait_defining_each_other2.current.stderr
two_tait_defining_each_other2.next.stderr
two_tait_defining_each_other2.rs
two_tait_defining_each_other3.current.stderr
two_tait_defining_each_other3.rs
two_tait_defining_each_other.current.stderr
two_tait_defining_each_other.rs
type_parameters_captured.rs
type_parameters_captured.stderr
type-alias-generic-param.rs
type-alias-generic-param.stderr
type-alias-impl-trait-in-fn-body.rs
type-arg-mismatch-due-to-impl-trait.rs
type-arg-mismatch-due-to-impl-trait.stderr
unactionable_diagnostic.fixed
unactionable_diagnostic.rs
unactionable_diagnostic.stderr
universal_hrtb_anon.rs
universal_hrtb_named.rs
universal_in_adt_in_parameters.rs
universal_in_impl_trait_in_parameters.rs
universal_in_trait_defn_parameters.rs
universal_multiple_bounds.rs
universal_wrong_bounds.rs
universal_wrong_bounds.stderr
universal_wrong_hrtb.rs
universal_wrong_hrtb.stderr
universal-mismatched-type.rs
universal-mismatched-type.stderr
universal-two-impl-traits.rs
universal-two-impl-traits.stderr
unsafety-checking-cycle.rs
unsize_adt.rs Add more tests 2024-05-23 15:48:06 +00:00
unsize_adt.stderr Add more tests 2024-05-23 15:48:06 +00:00
unsize_slice.rs Add more tests 2024-05-23 15:48:06 +00:00
unsize_slice.stderr Add more tests 2024-05-23 15:48:06 +00:00
unsize_tuple.rs Add more tests 2024-05-23 15:48:06 +00:00
unsize_tuple.stderr Add more tests 2024-05-23 15:48:06 +00:00
variance.e2024.stderr
variance.new.stderr
variance.old.stderr
variance.rs
wf-check-hidden-type.rs
wf-check-hidden-type.stderr
wf-eval-order.rs
where-allowed-2.rs
where-allowed-2.stderr
where-allowed.rs
where-allowed.stderr
xcrate_simple.rs
xcrate.rs