Delegation: fix ICE on wrong instantiation
This commit is contained in:
Bryanskiy
parent
10a7aa14fe
commit
0cd9708de6
@ -2212,6 +2212,17 @@ fn check_delegation_constraints(&self, sig_id: DefId, span: Span, emit: bool) ->
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try_emit("delegation with early bound generics");
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}
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// There is no way to instantiate `Self` param for caller if
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// 1. callee is a trait method
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// 2. delegation item isn't an associative item
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if let DefKind::AssocFn = self.tcx().def_kind(sig_id)
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&& let DefKind::Fn = self.tcx().def_kind(self.item_def_id())
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&& self.tcx().associated_item(sig_id).container
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== ty::AssocItemContainer::TraitContainer
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{
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try_emit("delegation to a trait method from a free function");
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}
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if self.tcx().asyncness(sig_id) == ty::Asyncness::Yes {
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try_emit("delegation to async functions");
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}
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@ -1,5 +1,5 @@
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#![feature(fn_delegation)]
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//~^ WARN the feature `fn_delegation` is incomplete
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#![allow(incomplete_features)]
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trait Trait {
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const C: u32 = 0;
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@ -34,14 +34,6 @@ impl Trait for S {
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reuse foo { &self.0 }
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//~^ ERROR cannot find function `foo` in this scope
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reuse F::foo { &self.0 }
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//~^ ERROR cannot find function `foo` in `F`
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//~| ERROR duplicate definitions with name `foo`
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}
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impl S {
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reuse F::foo { &self.0 }
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//~^ ERROR cannot find function `foo` in `F`
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}
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fn main() {}
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@ -25,18 +25,6 @@ LL | reuse <F as Trait>::baz;
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| | help: there is an associated function with a similar name: `bar`
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| not a member of trait `Trait`
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error[E0201]: duplicate definitions with name `foo`:
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--> $DIR/bad-resolve.rs:37:5
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LL | fn foo(&self, x: i32) -> i32 { x }
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| ---------------------------------- item in trait
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...
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LL | reuse foo { &self.0 }
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| --------------------- previous definition here
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LL |
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LL | reuse F::foo { &self.0 }
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| ^^^^^^^^^^^^^^^^^^^^^^^^ duplicate definition
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error[E0423]: expected function, found associated constant `Trait::C`
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--> $DIR/bad-resolve.rs:24:11
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@ -66,27 +54,6 @@ error[E0425]: cannot find function `foo` in this scope
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LL | reuse foo { &self.0 }
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| ^^^ not found in this scope
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error[E0425]: cannot find function `foo` in `F`
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--> $DIR/bad-resolve.rs:37:14
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LL | reuse F::foo { &self.0 }
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| ^^^ not found in `F`
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error[E0425]: cannot find function `foo` in `F`
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--> $DIR/bad-resolve.rs:43:14
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LL | reuse F::foo { &self.0 }
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| ^^^ not found in `F`
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warning: the feature `fn_delegation` is incomplete and may not be safe to use and/or cause compiler crashes
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--> $DIR/bad-resolve.rs:1:12
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LL | #![feature(fn_delegation)]
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| ^^^^^^^^^^^^^
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= note: see issue #118212 <https://github.com/rust-lang/rust/issues/118212> for more information
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= note: `#[warn(incomplete_features)]` on by default
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error[E0046]: not all trait items implemented, missing: `Type`
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--> $DIR/bad-resolve.rs:22:1
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@ -96,7 +63,7 @@ LL | type Type;
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LL | impl Trait for S {
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| ^^^^^^^^^^^^^^^^ missing `Type` in implementation
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error: aborting due to 11 previous errors; 1 warning emitted
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error: aborting due to 8 previous errors
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Some errors have detailed explanations: E0046, E0201, E0324, E0407, E0423, E0425, E0575, E0576.
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Some errors have detailed explanations: E0046, E0324, E0407, E0423, E0425, E0575, E0576.
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For more information about an error, try `rustc --explain E0046`.
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@ -1,5 +1,5 @@
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#![feature(fn_delegation)]
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//~^ WARN the feature `fn_delegation` is incomplete
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#![allow(incomplete_features)]
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trait Trait {
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fn foo(&self) -> u32 { 0 }
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@ -9,15 +9,6 @@ LL | reuse to_reuse::foo { self }
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LL | reuse Trait::foo;
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| ^^^^^^^^^^^^^^^^^ duplicate definition
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warning: the feature `fn_delegation` is incomplete and may not be safe to use and/or cause compiler crashes
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--> $DIR/duplicate-definition-inside-trait-impl.rs:1:12
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LL | #![feature(fn_delegation)]
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| ^^^^^^^^^^^^^
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= note: see issue #118212 <https://github.com/rust-lang/rust/issues/118212> for more information
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= note: `#[warn(incomplete_features)]` on by default
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error: aborting due to 1 previous error; 1 warning emitted
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error: aborting due to 1 previous error
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For more information about this error, try `rustc --explain E0201`.
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@ -1,7 +1,7 @@
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//@ run-pass
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#![feature(fn_delegation)]
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//~^ WARN the feature `fn_delegation` is incomplete
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#![allow(incomplete_features)]
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trait ToReuse {
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fn foo(&self, x: i32) -> i32 { x }
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@ -1,11 +0,0 @@
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warning: the feature `fn_delegation` is incomplete and may not be safe to use and/or cause compiler crashes
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--> $DIR/explicit-paths-in-traits-pass.rs:3:12
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LL | #![feature(fn_delegation)]
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| ^^^^^^^^^^^^^
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= note: see issue #118212 <https://github.com/rust-lang/rust/issues/118212> for more information
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= note: `#[warn(incomplete_features)]` on by default
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warning: 1 warning emitted
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@ -1,7 +1,7 @@
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//@ run-pass
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#![feature(fn_delegation)]
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//~^ WARN the feature `fn_delegation` is incomplete
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#![allow(incomplete_features)]
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trait Trait {
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fn bar(&self, x: i32) -> i32 { x }
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@ -10,7 +10,6 @@ fn description(&self) -> &str {
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}
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fn static_method(x: i32) -> i32 { x }
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fn static_method2(x: i32, y: i32) -> i32 { x + y }
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fn baz<'a>(&self, x: &'a i32) -> &'a i32 { x }
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}
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struct F;
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@ -29,11 +28,9 @@ impl Trait for S {
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reuse Trait::description { &self.0 }
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reuse <F as Trait>::static_method;
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reuse <F as Trait>::static_method2 { S::static_method(self) }
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reuse Trait::baz { &self.0 }
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}
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impl S {
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reuse Trait::baz { &self.0 }
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reuse <F as Trait>::static_method { to_reuse::foo(self) }
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}
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@ -49,16 +46,8 @@ fn main() {
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assert_eq!(42, <S as Trait>::static_method(42));
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assert_eq!(21, S::static_method2(10, 10));
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reuse <S as Trait>::static_method;
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reuse <S as Trait>::static_method2 { static_method(self) }
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#[inline]
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reuse to_reuse::foo;
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assert_eq!(42, static_method(42));
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assert_eq!(21, static_method2(10, 10));
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assert_eq!(43, foo(42));
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assert_eq!(15, zero_args());
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let x: i32 = 15;
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assert_eq!(&x, <S as Trait>::baz(&s, &x));
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assert_eq!(&x, S::baz(&s, &x));
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}
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@ -1,11 +0,0 @@
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warning: the feature `fn_delegation` is incomplete and may not be safe to use and/or cause compiler crashes
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--> $DIR/explicit-paths-pass.rs:3:12
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LL | #![feature(fn_delegation)]
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| ^^^^^^^^^^^^^
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= note: see issue #118212 <https://github.com/rust-lang/rust/issues/118212> for more information
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= note: `#[warn(incomplete_features)]` on by default
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warning: 1 warning emitted
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@ -1,7 +1,7 @@
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//@ run-pass
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#![feature(fn_delegation)]
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//~^ WARN the feature `fn_delegation` is incomplete
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#![allow(incomplete_features)]
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mod to_reuse {
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use crate::S;
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@ -1,11 +0,0 @@
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warning: the feature `fn_delegation` is incomplete and may not be safe to use and/or cause compiler crashes
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--> $DIR/explicit-paths-signature-pass.rs:3:12
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LL | #![feature(fn_delegation)]
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| ^^^^^^^^^^^^^
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= note: see issue #118212 <https://github.com/rust-lang/rust/issues/118212> for more information
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= note: `#[warn(incomplete_features)]` on by default
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warning: 1 warning emitted
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@ -1,25 +1,84 @@
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#![feature(fn_delegation)]
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//~^ WARN the feature `fn_delegation` is incomplete
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#![allow(incomplete_features)]
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trait Trait {
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fn bar(&self) -> i32 { 42 }
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fn foo1(&self, x: i32) -> i32 { x }
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fn foo2(x: i32) -> i32 { x }
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}
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struct F;
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impl Trait for F {}
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struct S(F);
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impl Trait for S {
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reuse <F as Trait>::bar;
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//~^ ERROR mismatched types
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pub mod to_reuse {
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pub fn foo3() {}
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}
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struct S2(F);
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impl F {
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fn foo4(&self) {}
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}
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impl Trait for S2 {
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reuse <S2 as Trait>::bar { &self.0 }
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mod fn_to_other {
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use super::*;
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reuse Trait::foo1;
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//~^ ERROR delegation to a trait method from a free function is not supported yet
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reuse <S as Trait>::foo2;
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//~^ ERROR delegation to a trait method from a free function is not supported yet
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reuse to_reuse::foo3;
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reuse S::foo4;
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//~^ ERROR cannot find function `foo4` in `S`
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}
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mod inherent_impl_assoc_fn_to_other {
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use crate::*;
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impl S {
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reuse Trait::foo1 { &self.0 }
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reuse <S as Trait>::foo2;
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reuse to_reuse::foo3;
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reuse F::foo4 { &self.0 }
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//~^ ERROR cannot find function `foo4` in `F`
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}
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}
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mod trait_impl_assoc_fn_to_other {
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use crate::*;
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impl Trait for S {
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reuse Trait::foo1 { &self.0 }
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reuse <F as Trait>::foo2;
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reuse to_reuse::foo3;
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//~^ ERROR method `foo3` is not a member of trait `Trait`
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reuse F::foo4 { &self.0 }
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//~^ ERROR method `foo4` is not a member of trait `Trait`
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//~| ERROR cannot find function `foo4` in `F`
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}
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}
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mod trait_assoc_fn_to_other {
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use crate::*;
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trait Trait2 : Trait {
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reuse <F as Trait>::foo1 { self }
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//~^ ERROR mismatched types
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reuse <F as Trait>::foo2;
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reuse to_reuse::foo3;
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reuse F::foo4 { &F }
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//~^ ERROR cannot find function `foo4` in `F`
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}
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}
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mod type_mismatch {
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use crate::*;
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struct S2;
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impl Trait for S {
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//~^ ERROR conflicting implementations of trait `Trait` for type `S`
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reuse <S2 as Trait>::foo1;
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//~^ ERROR mismatched types
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//~| ERROR the trait bound `S2: Trait` is not satisfied
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}
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}
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fn main() {}
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@ -1,38 +1,129 @@
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warning: the feature `fn_delegation` is incomplete and may not be safe to use and/or cause compiler crashes
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--> $DIR/explicit-paths.rs:1:12
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error[E0407]: method `foo3` is not a member of trait `Trait`
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--> $DIR/explicit-paths.rs:51:9
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LL | #![feature(fn_delegation)]
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| ^^^^^^^^^^^^^
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LL | reuse to_reuse::foo3;
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| ^^^^^^^^^^^^^^^^----^
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| | |
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| | help: there is an associated function with a similar name: `foo1`
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| not a member of trait `Trait`
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error[E0407]: method `foo4` is not a member of trait `Trait`
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--> $DIR/explicit-paths.rs:53:9
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|
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= note: see issue #118212 <https://github.com/rust-lang/rust/issues/118212> for more information
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= note: `#[warn(incomplete_features)]` on by default
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LL | reuse F::foo4 { &self.0 }
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| ^^^^^^^^^----^^^^^^^^^^^^
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| | |
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| | help: there is an associated function with a similar name: `foo1`
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| not a member of trait `Trait`
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error[E0425]: cannot find function `foo4` in `S`
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--> $DIR/explicit-paths.rs:29:14
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|
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LL | reuse S::foo4;
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| ^^^^ not found in `S`
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error[E0425]: cannot find function `foo4` in `F`
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--> $DIR/explicit-paths.rs:40:18
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LL | reuse F::foo4 { &self.0 }
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| ^^^^ not found in `F`
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|
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note: function `fn_to_other::foo4` exists but is inaccessible
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--> $DIR/explicit-paths.rs:29:5
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|
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LL | reuse S::foo4;
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| ^^^^^^^^^^^^^^ not accessible
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error[E0425]: cannot find function `foo4` in `F`
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--> $DIR/explicit-paths.rs:53:18
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|
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LL | reuse F::foo4 { &self.0 }
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| ^^^^ not found in `F`
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|
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note: function `fn_to_other::foo4` exists but is inaccessible
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--> $DIR/explicit-paths.rs:29:5
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|
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LL | reuse S::foo4;
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| ^^^^^^^^^^^^^^ not accessible
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error[E0425]: cannot find function `foo4` in `F`
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--> $DIR/explicit-paths.rs:67:18
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|
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LL | reuse F::foo4 { &F }
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| ^^^^ not found in `F`
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|
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note: function `fn_to_other::foo4` exists but is inaccessible
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--> $DIR/explicit-paths.rs:29:5
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|
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LL | reuse S::foo4;
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| ^^^^^^^^^^^^^^ not accessible
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error[E0119]: conflicting implementations of trait `Trait` for type `S`
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--> $DIR/explicit-paths.rs:76:5
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|
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LL | impl Trait for S {
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| ---------------- first implementation here
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...
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LL | impl Trait for S {
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| ^^^^^^^^^^^^^^^^ conflicting implementation for `S`
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error: delegation to a trait method from a free function is not supported yet
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--> $DIR/explicit-paths.rs:24:18
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|
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LL | fn foo1(&self, x: i32) -> i32 { x }
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| ----------------------------- callee defined here
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...
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LL | reuse Trait::foo1;
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| ^^^^
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error: delegation to a trait method from a free function is not supported yet
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--> $DIR/explicit-paths.rs:26:25
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|
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LL | fn foo2(x: i32) -> i32 { x }
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| ---------------------- callee defined here
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...
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LL | reuse <S as Trait>::foo2;
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| ^^^^
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error[E0308]: mismatched types
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--> $DIR/explicit-paths.rs:14:25
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--> $DIR/explicit-paths.rs:63:36
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LL | reuse <F as Trait>::bar;
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| --------------^^^
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| | |
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| | expected `&F`, found `&S`
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| arguments to this function are incorrect
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LL | trait Trait2 : Trait {
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| -------------------- found this type parameter
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LL | reuse <F as Trait>::foo1 { self }
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| ^^^^ expected `&F`, found `&Self`
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|
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= note: expected reference `&F`
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found reference `&Self`
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error[E0277]: the trait bound `S2: Trait` is not satisfied
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--> $DIR/explicit-paths.rs:78:16
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|
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LL | reuse <S2 as Trait>::foo1;
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| ^^ the trait `Trait` is not implemented for `S2`
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|
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= help: the following other types implement trait `Trait`:
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F
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S
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error[E0308]: mismatched types
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--> $DIR/explicit-paths.rs:78:30
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|
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LL | reuse <S2 as Trait>::foo1;
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| ---------------^^^^
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| | |
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| | expected `&S2`, found `&S`
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| arguments to this function are incorrect
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|
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= note: expected reference `&S2`
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found reference `&S`
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note: method defined here
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--> $DIR/explicit-paths.rs:5:8
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|
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LL | fn bar(&self) -> i32 { 42 }
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| ^^^ -----
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LL | fn foo1(&self, x: i32) -> i32 { x }
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| ^^^^ -----
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error[E0308]: mismatched types
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--> $DIR/explicit-paths.rs:21:32
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|
||||
LL | reuse <S2 as Trait>::bar { &self.0 }
|
||||
| ^^^^^^^ expected `&S2`, found `&F`
|
||||
|
|
||||
= note: expected reference `&S2`
|
||||
found reference `&F`
|
||||
error: aborting due to 12 previous errors
|
||||
|
||||
error: aborting due to 2 previous errors; 1 warning emitted
|
||||
|
||||
For more information about this error, try `rustc --explain E0308`.
|
||||
Some errors have detailed explanations: E0119, E0277, E0308, E0407, E0425.
|
||||
For more information about an error, try `rustc --explain E0119`.
|
||||
|
||||
@ -1,6 +1,6 @@
|
||||
#![feature(c_variadic)]
|
||||
#![feature(fn_delegation)]
|
||||
//~^ WARN the feature `fn_delegation` is incomplete
|
||||
#![allow(incomplete_features)]
|
||||
|
||||
mod generics {
|
||||
trait GenericTrait<T> {
|
||||
|
||||
@ -1,12 +1,3 @@
|
||||
warning: the feature `fn_delegation` is incomplete and may not be safe to use and/or cause compiler crashes
|
||||
--> $DIR/not-supported.rs:2:12
|
||||
|
|
||||
LL | #![feature(fn_delegation)]
|
||||
| ^^^^^^^^^^^^^
|
||||
|
|
||||
= note: see issue #118212 <https://github.com/rust-lang/rust/issues/118212> for more information
|
||||
= note: `#[warn(incomplete_features)]` on by default
|
||||
|
||||
error: delegation with early bound generics is not supported yet
|
||||
--> $DIR/not-supported.rs:16:29
|
||||
|
|
||||
@ -178,7 +169,7 @@ LL | pub reuse to_reuse2::foo;
|
||||
LL | reuse to_reuse1::foo;
|
||||
| ^^^
|
||||
|
||||
error: aborting due to 19 previous errors; 1 warning emitted
|
||||
error: aborting due to 19 previous errors
|
||||
|
||||
Some errors have detailed explanations: E0049, E0195.
|
||||
For more information about an error, try `rustc --explain E0049`.
|
||||
|
||||
@ -2,7 +2,7 @@
|
||||
|
||||
#![feature(decl_macro)]
|
||||
#![feature(fn_delegation)]
|
||||
//~^ WARN the feature `fn_delegation` is incomplete
|
||||
#![allow(incomplete_features)]
|
||||
|
||||
macro_rules! reuse { {} => {} }
|
||||
|
||||
|
||||
@ -1,11 +0,0 @@
|
||||
warning: the feature `fn_delegation` is incomplete and may not be safe to use and/or cause compiler crashes
|
||||
--> $DIR/parse.rs:4:12
|
||||
|
|
||||
LL | #![feature(fn_delegation)]
|
||||
| ^^^^^^^^^^^^^
|
||||
|
|
||||
= note: see issue #118212 <https://github.com/rust-lang/rust/issues/118212> for more information
|
||||
= note: `#[warn(incomplete_features)]` on by default
|
||||
|
||||
warning: 1 warning emitted
|
||||
|
||||
@ -1,7 +1,7 @@
|
||||
//@ run-pass
|
||||
|
||||
#![feature(fn_delegation)]
|
||||
//~^ WARN the feature `fn_delegation` is incomplete
|
||||
#![allow(incomplete_features)]
|
||||
|
||||
mod to_reuse {
|
||||
pub fn foo(x: i32) -> i32 { x }
|
||||
|
||||
@ -1,12 +1,3 @@
|
||||
warning: the feature `fn_delegation` is incomplete and may not be safe to use and/or cause compiler crashes
|
||||
--> $DIR/target-expr-pass.rs:3:12
|
||||
|
|
||||
LL | #![feature(fn_delegation)]
|
||||
| ^^^^^^^^^^^^^
|
||||
|
|
||||
= note: see issue #118212 <https://github.com/rust-lang/rust/issues/118212> for more information
|
||||
= note: `#[warn(incomplete_features)]` on by default
|
||||
|
||||
warning: trait `Trait` is never used
|
||||
--> $DIR/target-expr-pass.rs:17:7
|
||||
|
|
||||
@ -27,5 +18,5 @@ warning: struct `S` is never constructed
|
||||
LL | struct S(F);
|
||||
| ^
|
||||
|
||||
warning: 4 warnings emitted
|
||||
warning: 3 warnings emitted
|
||||
|
||||
|
||||
@ -14,7 +14,8 @@ fn foo(x: i32) -> i32 { x }
|
||||
|
||||
fn bar<T: Default>(_: T) {
|
||||
reuse Trait::static_method {
|
||||
//~^ ERROR delegation with early bound generics is not supported yet
|
||||
//~^ ERROR delegation to a trait method from a free function is not supported yet
|
||||
//~| ERROR delegation with early bound generics is not supported yet
|
||||
//~| ERROR mismatched types
|
||||
let _ = T::Default();
|
||||
//~^ ERROR can't use generic parameters from outer item
|
||||
@ -24,6 +25,7 @@ fn bar<T: Default>(_: T) {
|
||||
fn main() {
|
||||
let y = 0;
|
||||
reuse <S as Trait>::static_method {
|
||||
//~^ ERROR delegation to a trait method from a free function is not supported yet
|
||||
let x = y;
|
||||
//~^ ERROR can't capture dynamic environment in a fn item
|
||||
foo(self);
|
||||
|
||||
@ -1,5 +1,5 @@
|
||||
error[E0401]: can't use generic parameters from outer item
|
||||
--> $DIR/target-expr.rs:19:17
|
||||
--> $DIR/target-expr.rs:20:17
|
||||
|
|
||||
LL | fn bar<T: Default>(_: T) {
|
||||
| - type parameter from outer item
|
||||
@ -10,7 +10,7 @@ LL | let _ = T::Default();
|
||||
| ^^^^^^^^^^ use of generic parameter from outer item
|
||||
|
||||
error[E0434]: can't capture dynamic environment in a fn item
|
||||
--> $DIR/target-expr.rs:27:17
|
||||
--> $DIR/target-expr.rs:29:17
|
||||
|
|
||||
LL | let x = y;
|
||||
| ^
|
||||
@ -18,7 +18,7 @@ LL | let x = y;
|
||||
= help: use the `|| { ... }` closure form instead
|
||||
|
||||
error[E0424]: expected value, found module `self`
|
||||
--> $DIR/target-expr.rs:34:5
|
||||
--> $DIR/target-expr.rs:36:5
|
||||
|
|
||||
LL | fn main() {
|
||||
| ---- this function can't have a `self` parameter
|
||||
@ -27,13 +27,13 @@ LL | self.0;
|
||||
| ^^^^ `self` value is a keyword only available in methods with a `self` parameter
|
||||
|
||||
error[E0425]: cannot find value `x` in this scope
|
||||
--> $DIR/target-expr.rs:36:13
|
||||
--> $DIR/target-expr.rs:38:13
|
||||
|
|
||||
LL | let z = x;
|
||||
| ^
|
||||
|
|
||||
help: the binding `x` is available in a different scope in the same function
|
||||
--> $DIR/target-expr.rs:27:13
|
||||
--> $DIR/target-expr.rs:29:13
|
||||
|
|
||||
LL | let x = y;
|
||||
| ^
|
||||
@ -47,6 +47,24 @@ LL | fn static_method(x: i32) -> i32 { x }
|
||||
LL | reuse Trait::static_method {
|
||||
| ^^^^^^^^^^^^^
|
||||
|
||||
error: delegation to a trait method from a free function is not supported yet
|
||||
--> $DIR/target-expr.rs:16:18
|
||||
|
|
||||
LL | fn static_method(x: i32) -> i32 { x }
|
||||
| ------------------------------- callee defined here
|
||||
...
|
||||
LL | reuse Trait::static_method {
|
||||
| ^^^^^^^^^^^^^
|
||||
|
||||
error: delegation to a trait method from a free function is not supported yet
|
||||
--> $DIR/target-expr.rs:27:25
|
||||
|
|
||||
LL | fn static_method(x: i32) -> i32 { x }
|
||||
| ------------------------------- callee defined here
|
||||
...
|
||||
LL | reuse <S as Trait>::static_method {
|
||||
| ^^^^^^^^^^^^^
|
||||
|
||||
error[E0308]: mismatched types
|
||||
--> $DIR/target-expr.rs:16:32
|
||||
|
|
||||
@ -54,12 +72,13 @@ LL | reuse Trait::static_method {
|
||||
| ________________________________^
|
||||
LL | |
|
||||
LL | |
|
||||
LL | |
|
||||
LL | | let _ = T::Default();
|
||||
LL | |
|
||||
LL | | }
|
||||
| |_____^ expected `i32`, found `()`
|
||||
|
||||
error: aborting due to 6 previous errors
|
||||
error: aborting due to 8 previous errors
|
||||
|
||||
Some errors have detailed explanations: E0308, E0401, E0424, E0425, E0434.
|
||||
For more information about an error, try `rustc --explain E0308`.
|
||||
|
||||
Loading…
Reference in New Issue
Block a user