Auto merge of #106582 - compiler-errors:better-spans-on-bad-tys, r=lcnr
Improve spans of non-WF implied bound types Fixes #60980
This commit is contained in:
commit
c54c8cbac8
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@ -97,21 +97,22 @@ pub(super) fn enter_wf_checking_ctxt<'tcx, F>(
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let infcx = &tcx.infer_ctxt().build();
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let ocx = ObligationCtxt::new(infcx);
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let assumed_wf_types = ocx.assumed_wf_types(param_env, span, body_def_id);
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let mut wfcx = WfCheckingCtxt { ocx, span, body_id, param_env };
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if !tcx.features().trivial_bounds {
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wfcx.check_false_global_bounds()
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}
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f(&mut wfcx);
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let assumed_wf_types = wfcx.ocx.assumed_wf_types(param_env, span, body_def_id);
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let implied_bounds = infcx.implied_bounds_tys(param_env, body_id, assumed_wf_types);
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let errors = wfcx.select_all_or_error();
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if !errors.is_empty() {
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infcx.err_ctxt().report_fulfillment_errors(&errors, None);
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return;
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}
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let implied_bounds = infcx.implied_bounds_tys(param_env, body_id, assumed_wf_types);
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let outlives_environment =
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OutlivesEnvironment::with_bounds(param_env, Some(infcx), implied_bounds);
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@ -1489,54 +1490,38 @@ fn check_fn_or_method<'tcx>(
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def_id: LocalDefId,
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) {
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let tcx = wfcx.tcx();
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let sig = tcx.liberate_late_bound_regions(def_id.to_def_id(), sig);
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let mut sig = tcx.liberate_late_bound_regions(def_id.to_def_id(), sig);
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// Normalize the input and output types one at a time, using a different
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// `WellFormedLoc` for each. We cannot call `normalize_associated_types`
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// on the entire `FnSig`, since this would use the same `WellFormedLoc`
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// for each type, preventing the HIR wf check from generating
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// a nice error message.
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let ty::FnSig { mut inputs_and_output, c_variadic, unsafety, abi } = sig;
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inputs_and_output = tcx.mk_type_list(inputs_and_output.iter().enumerate().map(|(i, ty)| {
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wfcx.normalize(
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span,
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Some(WellFormedLoc::Param {
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function: def_id,
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// Note that the `param_idx` of the output type is
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// one greater than the index of the last input type.
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param_idx: i.try_into().unwrap(),
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}),
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ty,
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)
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}));
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// Manually call `normalize_associated_types_in` on the other types
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// in `FnSig`. This ensures that if the types of these fields
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// ever change to include projections, we will start normalizing
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// them automatically.
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let sig = ty::FnSig {
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inputs_and_output,
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c_variadic: wfcx.normalize(span, None, c_variadic),
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unsafety: wfcx.normalize(span, None, unsafety),
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abi: wfcx.normalize(span, None, abi),
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};
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let arg_span =
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|idx| hir_decl.inputs.get(idx).map_or(hir_decl.output.span(), |arg: &hir::Ty<'_>| arg.span);
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for (i, (&input_ty, ty)) in iter::zip(sig.inputs(), hir_decl.inputs).enumerate() {
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sig.inputs_and_output =
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tcx.mk_type_list(sig.inputs_and_output.iter().enumerate().map(|(idx, ty)| {
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wfcx.normalize(
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arg_span(idx),
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Some(WellFormedLoc::Param {
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function: def_id,
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// Note that the `param_idx` of the output type is
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// one greater than the index of the last input type.
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param_idx: idx.try_into().unwrap(),
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}),
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ty,
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)
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}));
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for (idx, ty) in sig.inputs_and_output.iter().enumerate() {
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wfcx.register_wf_obligation(
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ty.span,
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Some(WellFormedLoc::Param { function: def_id, param_idx: i.try_into().unwrap() }),
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input_ty.into(),
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arg_span(idx),
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Some(WellFormedLoc::Param { function: def_id, param_idx: idx.try_into().unwrap() }),
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ty.into(),
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);
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}
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wfcx.register_wf_obligation(
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hir_decl.output.span(),
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Some(WellFormedLoc::Param {
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function: def_id,
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param_idx: sig.inputs().len().try_into().unwrap(),
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}),
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sig.output().into(),
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);
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check_where_clauses(wfcx, span, def_id);
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check_return_position_impl_trait_in_trait_bounds(
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@ -1,8 +1,8 @@
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error[E0277]: the trait bound `Self: Get` is not satisfied
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--> $DIR/associated-types-for-unimpl-trait.rs:10:5
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--> $DIR/associated-types-for-unimpl-trait.rs:10:40
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LL | fn uhoh<U:Get>(&self, foo: U, bar: <Self as Get>::Value) {}
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Get` is not implemented for `Self`
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| ^^^^^^^^^^^^^^^^^^^^ the trait `Get` is not implemented for `Self`
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help: consider further restricting `Self`
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@ -1,8 +1,8 @@
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error[E0277]: the trait bound `T: Get` is not satisfied
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--> $DIR/associated-types-no-suitable-bound.rs:11:5
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--> $DIR/associated-types-no-suitable-bound.rs:11:21
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LL | fn uhoh<T>(foo: <T as Get>::Value) {}
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Get` is not implemented for `T`
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| ^^^^^^^^^^^^^^^^^ the trait `Get` is not implemented for `T`
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help: consider restricting type parameter `T`
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@ -1,8 +1,8 @@
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error[E0277]: the trait bound `Self: Get` is not satisfied
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--> $DIR/associated-types-no-suitable-supertrait-2.rs:17:5
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--> $DIR/associated-types-no-suitable-supertrait-2.rs:17:40
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LL | fn uhoh<U:Get>(&self, foo: U, bar: <Self as Get>::Value) {}
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Get` is not implemented for `Self`
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| ^^^^^^^^^^^^^^^^^^^^ the trait `Get` is not implemented for `Self`
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help: consider further restricting `Self`
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@ -1,14 +1,14 @@
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error[E0277]: the trait bound `(T, U): Get` is not satisfied
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--> $DIR/associated-types-no-suitable-supertrait.rs:22:5
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--> $DIR/associated-types-no-suitable-supertrait.rs:22:40
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LL | fn uhoh<U:Get>(&self, foo: U, bar: <(T, U) as Get>::Value) {}
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Get` is not implemented for `(T, U)`
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| ^^^^^^^^^^^^^^^^^^^^^^ the trait `Get` is not implemented for `(T, U)`
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error[E0277]: the trait bound `Self: Get` is not satisfied
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--> $DIR/associated-types-no-suitable-supertrait.rs:17:5
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--> $DIR/associated-types-no-suitable-supertrait.rs:17:40
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LL | fn uhoh<U:Get>(&self, foo: U, bar: <Self as Get>::Value) {}
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Get` is not implemented for `Self`
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| ^^^^^^^^^^^^^^^^^^^^ the trait `Get` is not implemented for `Self`
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help: consider further restricting `Self`
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@ -1,8 +1,8 @@
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error[E0277]: the trait bound `Self: Get` is not satisfied
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--> $DIR/associated-types-projection-to-unrelated-trait-in-method-without-default.rs:10:5
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--> $DIR/associated-types-projection-to-unrelated-trait-in-method-without-default.rs:10:40
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LL | fn okay<U:Get>(&self, foo: U, bar: <Self as Get>::Value);
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Get` is not implemented for `Self`
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| ^^^^^^^^^^^^^^^^^^^^ the trait `Get` is not implemented for `Self`
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help: consider further restricting `Self`
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@ -15,9 +15,9 @@ pub trait ThriftService<Bug: NotFoo>:
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{
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fn get_service(
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//~^ ERROR the trait bound `Bug: Foo` is not satisfied
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//~| ERROR the trait bound `Bug: Foo` is not satisfied
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&self,
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) -> Self::AssocType;
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//~^ ERROR the trait bound `Bug: Foo` is not satisfied
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}
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fn with_factory<H>(factory: dyn ThriftService<()>) {}
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@ -20,7 +20,7 @@ LL | |
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LL | |
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LL | | Service<AssocType = <Bug as Foo>::OnlyFoo>
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... |
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LL | | ) -> Self::AssocType;
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LL | |
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LL | | }
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| |_^ the trait `Foo` is not implemented for `Bug`
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@ -34,7 +34,6 @@ error[E0277]: the trait bound `Bug: Foo` is not satisfied
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LL | / fn get_service(
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LL | |
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LL | |
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LL | | &self,
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LL | | ) -> Self::AssocType;
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| |_________________________^ the trait `Foo` is not implemented for `Bug`
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@ -45,20 +44,16 @@ LL | pub trait ThriftService<Bug: NotFoo + Foo>:
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| +++++
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error[E0277]: the trait bound `(): Foo` is not satisfied
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--> $DIR/issue-59324.rs:23:1
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--> $DIR/issue-59324.rs:23:29
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LL | fn with_factory<H>(factory: dyn ThriftService<()>) {}
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Foo` is not implemented for `()`
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| ^^^^^^^^^^^^^^^^^^^^^ the trait `Foo` is not implemented for `()`
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error[E0277]: the trait bound `Bug: Foo` is not satisfied
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--> $DIR/issue-59324.rs:16:5
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--> $DIR/issue-59324.rs:19:10
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LL | / fn get_service(
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LL | |
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LL | |
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LL | | &self,
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LL | | ) -> Self::AssocType;
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| |_________________________^ the trait `Foo` is not implemented for `Bug`
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LL | ) -> Self::AssocType;
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| ^^^^^^^^^^^^^^^ the trait `Foo` is not implemented for `Bug`
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help: consider further restricting this bound
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@ -1,10 +1,8 @@
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error[E0277]: the trait bound `isize: HasState` is not satisfied
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--> $DIR/issue-18611.rs:1:1
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--> $DIR/issue-18611.rs:1:18
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LL | / fn add_state(op: <isize as HasState>::State) {
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LL | |
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LL | | }
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| |_^ the trait `HasState` is not implemented for `isize`
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LL | fn add_state(op: <isize as HasState>::State) {
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `HasState` is not implemented for `isize`
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error: aborting due to previous error
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@ -1,14 +1,8 @@
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error[E0495]: cannot infer an appropriate lifetime for lifetime parameter `'a` due to conflicting requirements
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--> $DIR/issue-20831-debruijn.rs:28:5
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--> $DIR/issue-20831-debruijn.rs:28:33
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LL | / fn subscribe(&mut self, t : Box<dyn Subscriber<Input=<Self as Publisher>::Output> + 'a>) {
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LL | | // Not obvious, but there is an implicit lifetime here -------^
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LL | |
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LL | | //
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... |
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LL | | self.sub = t;
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LL | | }
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| |_____^
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LL | fn subscribe(&mut self, t : Box<dyn Subscriber<Input=<Self as Publisher>::Output> + 'a>) {
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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|
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note: first, the lifetime cannot outlive the anonymous lifetime defined here...
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--> $DIR/issue-20831-debruijn.rs:28:58
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@ -21,16 +15,10 @@ note: ...but the lifetime must also be valid for the lifetime `'a` as defined he
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LL | impl<'a> Publisher<'a> for MyStruct<'a> {
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| ^^
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note: ...so that the types are compatible
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--> $DIR/issue-20831-debruijn.rs:28:5
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--> $DIR/issue-20831-debruijn.rs:28:33
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|
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LL | / fn subscribe(&mut self, t : Box<dyn Subscriber<Input=<Self as Publisher>::Output> + 'a>) {
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LL | | // Not obvious, but there is an implicit lifetime here -------^
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LL | |
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LL | | //
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... |
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LL | | self.sub = t;
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LL | | }
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| |_____^
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LL | fn subscribe(&mut self, t : Box<dyn Subscriber<Input=<Self as Publisher>::Output> + 'a>) {
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= note: expected `<MyStruct<'a> as Publisher<'_>>`
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found `<MyStruct<'_> as Publisher<'_>>`
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@ -1,3 +1,9 @@
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error[E0277]: the trait bound `for<'a> (): Trait2<'a>` is not satisfied
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--> $DIR/issue-35570.rs:8:40
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|
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LL | fn _ice(param: Box<dyn for <'a> Trait1<<() as Trait2<'a>>::Ty>>) {
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| ^^^^^^^^^^^^^^^^^^^^^^ the trait `for<'a> Trait2<'a>` is not implemented for `()`
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error[E0277]: the trait bound `for<'a> (): Trait2<'a>` is not satisfied
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--> $DIR/issue-35570.rs:8:1
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|
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@ -8,12 +14,6 @@ LL | | let _e: (usize, usize) = unsafe{mem::transmute(param)};
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LL | | }
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| |_^ the trait `for<'a> Trait2<'a>` is not implemented for `()`
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error[E0277]: the trait bound `for<'a> (): Trait2<'a>` is not satisfied
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--> $DIR/issue-35570.rs:8:40
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|
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LL | fn _ice(param: Box<dyn for <'a> Trait1<<() as Trait2<'a>>::Ty>>) {
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| ^^^^^^^^^^^^^^^^^^^^^^ the trait `for<'a> Trait2<'a>` is not implemented for `()`
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error: aborting due to 2 previous errors
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For more information about this error, try `rustc --explain E0277`.
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|
|
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@ -1,8 +1,8 @@
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error[E0495]: cannot infer an appropriate lifetime for lifetime parameter `'d` due to conflicting requirements
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--> $DIR/normalization-bounds-error.rs:12:1
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--> $DIR/normalization-bounds-error.rs:12:31
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|
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LL | fn visit_seq<'d, 'a: 'd>() -> <&'a () as Visitor<'d>>::Value {}
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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|
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note: first, the lifetime cannot outlive the lifetime `'d` as defined here...
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--> $DIR/normalization-bounds-error.rs:12:14
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|
@ -15,10 +15,10 @@ note: ...but the lifetime must also be valid for the lifetime `'a` as defined he
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LL | fn visit_seq<'d, 'a: 'd>() -> <&'a () as Visitor<'d>>::Value {}
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| ^^
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note: ...so that the types are compatible
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--> $DIR/normalization-bounds-error.rs:12:1
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--> $DIR/normalization-bounds-error.rs:12:31
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|
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LL | fn visit_seq<'d, 'a: 'd>() -> <&'a () as Visitor<'d>>::Value {}
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= note: expected `Visitor<'d>`
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found `Visitor<'_>`
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|
|
|
@ -1,3 +1,14 @@
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error[E0277]: the trait bound `for<'z> T: Trait2<'y, 'z>` is not satisfied
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--> $DIR/regions-implied-bounds-projection-gap-hr-1.rs:21:49
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|
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LL | fn callee<'x, 'y, T>(t: &'x dyn for<'z> Trait1< <T as Trait2<'y, 'z>>::Foo >)
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `for<'z> Trait2<'y, 'z>` is not implemented for `T`
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|
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help: consider restricting type parameter `T`
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|
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LL | fn callee<'x, 'y, T: for<'z> Trait2<'y, 'z>>(t: &'x dyn for<'z> Trait1< <T as Trait2<'y, 'z>>::Foo >)
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| ++++++++++++++++++++++++
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error[E0277]: the trait bound `for<'z> T: Trait2<'y, 'z>` is not satisfied
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--> $DIR/regions-implied-bounds-projection-gap-hr-1.rs:21:1
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|
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|
@ -13,17 +24,6 @@ help: consider restricting type parameter `T`
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LL | fn callee<'x, 'y, T: for<'z> Trait2<'y, 'z>>(t: &'x dyn for<'z> Trait1< <T as Trait2<'y, 'z>>::Foo >)
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| ++++++++++++++++++++++++
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error[E0277]: the trait bound `for<'z> T: Trait2<'y, 'z>` is not satisfied
|
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--> $DIR/regions-implied-bounds-projection-gap-hr-1.rs:21:49
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|
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LL | fn callee<'x, 'y, T>(t: &'x dyn for<'z> Trait1< <T as Trait2<'y, 'z>>::Foo >)
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||||
| ^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `for<'z> Trait2<'y, 'z>` is not implemented for `T`
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|
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help: consider restricting type parameter `T`
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|
|
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LL | fn callee<'x, 'y, T: for<'z> Trait2<'y, 'z>>(t: &'x dyn for<'z> Trait1< <T as Trait2<'y, 'z>>::Foo >)
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| ++++++++++++++++++++++++
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error: aborting due to 2 previous errors
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||||
|
||||
For more information about this error, try `rustc --explain E0277`.
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|
|
|
@ -15,8 +15,10 @@ impl ToString for Cow<'_, str> {
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}
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}
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impl<B: ?Sized> Display for Cow<'_, B> { //~ ERROR: the trait bound `B: Clone` is not satisfied [E0277]
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fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { //~ ERROR: the trait bound `B: Clone` is not satisfied [E0277]
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impl<B: ?Sized> Display for Cow<'_, B> {
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//~^ ERROR: the trait bound `B: Clone` is not satisfied [E0277]
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fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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//~^ ERROR: the trait bound `B: Clone` is not satisfied [E0277]
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write!(f, "foo")
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}
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}
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|
|
|
@ -1,12 +1,8 @@
|
|||
error[E0277]: the trait bound `B: Clone` is not satisfied
|
||||
--> $DIR/issue-79224.rs:18:1
|
||||
--> $DIR/issue-79224.rs:18:17
|
||||
|
|
||||
LL | / impl<B: ?Sized> Display for Cow<'_, B> {
|
||||
LL | | fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
||||
LL | | write!(f, "foo")
|
||||
LL | | }
|
||||
LL | | }
|
||||
| |_^ the trait `Clone` is not implemented for `B`
|
||||
LL | impl<B: ?Sized> Display for Cow<'_, B> {
|
||||
| ^^^^^^^ the trait `Clone` is not implemented for `B`
|
||||
|
|
||||
= note: required for `B` to implement `ToOwned`
|
||||
help: consider further restricting this bound
|
||||
|
@ -15,12 +11,10 @@ LL | impl<B: ?Sized + std::clone::Clone> Display for Cow<'_, B> {
|
|||
| +++++++++++++++++++
|
||||
|
||||
error[E0277]: the trait bound `B: Clone` is not satisfied
|
||||
--> $DIR/issue-79224.rs:19:5
|
||||
--> $DIR/issue-79224.rs:20:12
|
||||
|
|
||||
LL | / fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
||||
LL | | write!(f, "foo")
|
||||
LL | | }
|
||||
| |_____^ the trait `Clone` is not implemented for `B`
|
||||
LL | fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
||||
| ^^^^^ the trait `Clone` is not implemented for `B`
|
||||
|
|
||||
= note: required for `B` to implement `ToOwned`
|
||||
help: consider further restricting this bound
|
||||
|
|
|
@ -1,8 +1,8 @@
|
|||
error[E0277]: the trait bound `Foo: HasComponent<()>` is not satisfied
|
||||
--> $DIR/issue-91594.rs:10:1
|
||||
--> $DIR/issue-91594.rs:10:6
|
||||
|
|
||||
LL | impl HasComponent<<Foo as Component<Foo>>::Interface> for Foo {}
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `HasComponent<()>` is not implemented for `Foo`
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `HasComponent<()>` is not implemented for `Foo`
|
||||
|
|
||||
= help: the trait `HasComponent<<Foo as Component<Foo>>::Interface>` is implemented for `Foo`
|
||||
note: required for `Foo` to implement `Component<Foo>`
|
||||
|
|
|
@ -1,8 +1,8 @@
|
|||
error[E0277]: the trait bound `<<Self as TraitC<E>>::TypeC<'a> as TraitB>::TypeB: TraitA` is not satisfied
|
||||
--> $DIR/issue-103573.rs:18:5
|
||||
--> $DIR/issue-103573.rs:18:18
|
||||
|
|
||||
LL | fn g<'a>(_: &<<Self::TypeC<'a> as TraitB>::TypeB as TraitA>::TypeA);
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `TraitA` is not implemented for `<<Self as TraitC<E>>::TypeC<'a> as TraitB>::TypeB`
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `TraitA` is not implemented for `<<Self as TraitC<E>>::TypeC<'a> as TraitB>::TypeB`
|
||||
|
|
||||
help: consider further restricting the associated type
|
||||
|
|
||||
|
|
|
@ -1,8 +1,8 @@
|
|||
error[E0277]: the trait bound `(): Foo` is not satisfied
|
||||
--> $DIR/wf-foreign-fn-decl-ret.rs:11:5
|
||||
--> $DIR/wf-foreign-fn-decl-ret.rs:11:25
|
||||
|
|
||||
LL | pub fn lint_me() -> <() as Foo>::Assoc;
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Foo` is not implemented for `()`
|
||||
| ^^^^^^^^^^^^^^^^^^ the trait `Foo` is not implemented for `()`
|
||||
|
||||
error[E0277]: the trait bound `u32: Unsatisfied` is not satisfied
|
||||
--> $DIR/wf-foreign-fn-decl-ret.rs:14:32
|
||||
|
|
Loading…
Reference in a new issue