add RPITIT tests: method compat auto trait leakage
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lcnr
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4 changed files with 224 additions and 0 deletions
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error[E0391]: cycle detected when computing type of `<impl at $DIR/method-compatability-via-leakage-cycle.rs:17:1: 17:19>::{anon_assoc#0}`
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--> $DIR/method-compatability-via-leakage-cycle.rs:21:24
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LL | fn foo(b: bool) -> impl Sized {
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| ^^^^^^^^^^
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note: ...which requires comparing an impl and trait method signature, inferring any hidden `impl Trait` types in the process...
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--> $DIR/method-compatability-via-leakage-cycle.rs:21:24
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LL | fn foo(b: bool) -> impl Sized {
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| ^^^^^^^^^^
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= note: ...which requires evaluating trait selection obligation `<impl at $DIR/method-compatability-via-leakage-cycle.rs:17:1: 17:19>::foo::{opaque#0}: core::marker::Send`...
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note: ...which requires computing type of opaque `<impl at $DIR/method-compatability-via-leakage-cycle.rs:17:1: 17:19>::foo::{opaque#0}`...
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--> $DIR/method-compatability-via-leakage-cycle.rs:21:24
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LL | fn foo(b: bool) -> impl Sized {
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| ^^^^^^^^^^
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note: ...which requires borrow-checking `<impl at $DIR/method-compatability-via-leakage-cycle.rs:17:1: 17:19>::foo`...
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--> $DIR/method-compatability-via-leakage-cycle.rs:21:5
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LL | fn foo(b: bool) -> impl Sized {
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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note: ...which requires promoting constants in MIR for `<impl at $DIR/method-compatability-via-leakage-cycle.rs:17:1: 17:19>::foo`...
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--> $DIR/method-compatability-via-leakage-cycle.rs:21:5
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LL | fn foo(b: bool) -> impl Sized {
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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note: ...which requires checking if `<impl at $DIR/method-compatability-via-leakage-cycle.rs:17:1: 17:19>::foo` contains FFI-unwind calls...
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--> $DIR/method-compatability-via-leakage-cycle.rs:21:5
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LL | fn foo(b: bool) -> impl Sized {
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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note: ...which requires building MIR for `<impl at $DIR/method-compatability-via-leakage-cycle.rs:17:1: 17:19>::foo`...
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--> $DIR/method-compatability-via-leakage-cycle.rs:21:5
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LL | fn foo(b: bool) -> impl Sized {
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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note: ...which requires match-checking `<impl at $DIR/method-compatability-via-leakage-cycle.rs:17:1: 17:19>::foo`...
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--> $DIR/method-compatability-via-leakage-cycle.rs:21:5
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LL | fn foo(b: bool) -> impl Sized {
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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note: ...which requires type-checking `<impl at $DIR/method-compatability-via-leakage-cycle.rs:17:1: 17:19>::foo`...
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--> $DIR/method-compatability-via-leakage-cycle.rs:21:5
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LL | fn foo(b: bool) -> impl Sized {
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= note: ...which again requires computing type of `<impl at $DIR/method-compatability-via-leakage-cycle.rs:17:1: 17:19>::{anon_assoc#0}`, completing the cycle
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note: cycle used when checking that `<impl at $DIR/method-compatability-via-leakage-cycle.rs:17:1: 17:19>` is well-formed
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--> $DIR/method-compatability-via-leakage-cycle.rs:17:1
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LL | impl Trait for u32 {
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| ^^^^^^^^^^^^^^^^^^
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= note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
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error: aborting due to 1 previous error
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For more information about this error, try `rustc --explain E0391`.
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error[E0391]: cycle detected when computing type of `<impl at $DIR/method-compatability-via-leakage-cycle.rs:17:1: 17:19>::{anon_assoc#0}`
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--> $DIR/method-compatability-via-leakage-cycle.rs:21:24
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LL | fn foo(b: bool) -> impl Sized {
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| ^^^^^^^^^^
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note: ...which requires comparing an impl and trait method signature, inferring any hidden `impl Trait` types in the process...
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--> $DIR/method-compatability-via-leakage-cycle.rs:21:5
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LL | fn foo(b: bool) -> impl Sized {
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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note: ...which requires computing type of `<impl at $DIR/method-compatability-via-leakage-cycle.rs:17:1: 17:19>::foo::{opaque#0}`...
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--> $DIR/method-compatability-via-leakage-cycle.rs:21:24
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LL | fn foo(b: bool) -> impl Sized {
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| ^^^^^^^^^^
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note: ...which requires computing type of opaque `<impl at $DIR/method-compatability-via-leakage-cycle.rs:17:1: 17:19>::foo::{opaque#0}`...
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--> $DIR/method-compatability-via-leakage-cycle.rs:21:24
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LL | fn foo(b: bool) -> impl Sized {
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| ^^^^^^^^^^
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note: ...which requires borrow-checking `<impl at $DIR/method-compatability-via-leakage-cycle.rs:17:1: 17:19>::foo`...
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--> $DIR/method-compatability-via-leakage-cycle.rs:21:5
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LL | fn foo(b: bool) -> impl Sized {
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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note: ...which requires promoting constants in MIR for `<impl at $DIR/method-compatability-via-leakage-cycle.rs:17:1: 17:19>::foo`...
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--> $DIR/method-compatability-via-leakage-cycle.rs:21:5
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LL | fn foo(b: bool) -> impl Sized {
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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note: ...which requires checking if `<impl at $DIR/method-compatability-via-leakage-cycle.rs:17:1: 17:19>::foo` contains FFI-unwind calls...
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--> $DIR/method-compatability-via-leakage-cycle.rs:21:5
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LL | fn foo(b: bool) -> impl Sized {
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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note: ...which requires building MIR for `<impl at $DIR/method-compatability-via-leakage-cycle.rs:17:1: 17:19>::foo`...
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--> $DIR/method-compatability-via-leakage-cycle.rs:21:5
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LL | fn foo(b: bool) -> impl Sized {
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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note: ...which requires match-checking `<impl at $DIR/method-compatability-via-leakage-cycle.rs:17:1: 17:19>::foo`...
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--> $DIR/method-compatability-via-leakage-cycle.rs:21:5
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LL | fn foo(b: bool) -> impl Sized {
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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note: ...which requires type-checking `<impl at $DIR/method-compatability-via-leakage-cycle.rs:17:1: 17:19>::foo`...
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--> $DIR/method-compatability-via-leakage-cycle.rs:21:5
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LL | fn foo(b: bool) -> impl Sized {
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= note: ...which again requires computing type of `<impl at $DIR/method-compatability-via-leakage-cycle.rs:17:1: 17:19>::{anon_assoc#0}`, completing the cycle
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note: cycle used when checking that `<impl at $DIR/method-compatability-via-leakage-cycle.rs:17:1: 17:19>` is well-formed
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--> $DIR/method-compatability-via-leakage-cycle.rs:17:1
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LL | impl Trait for u32 {
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| ^^^^^^^^^^^^^^^^^^
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= note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
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error[E0391]: cycle detected when computing type of `<impl at $DIR/method-compatability-via-leakage-cycle.rs:17:1: 17:19>::{anon_assoc#0}`
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--> $DIR/method-compatability-via-leakage-cycle.rs:21:24
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LL | fn foo(b: bool) -> impl Sized {
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| ^^^^^^^^^^
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note: ...which requires comparing an impl and trait method signature, inferring any hidden `impl Trait` types in the process...
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--> $DIR/method-compatability-via-leakage-cycle.rs:21:5
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LL | fn foo(b: bool) -> impl Sized {
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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note: ...which requires computing type of `<impl at $DIR/method-compatability-via-leakage-cycle.rs:17:1: 17:19>::foo::{opaque#0}`...
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--> $DIR/method-compatability-via-leakage-cycle.rs:21:24
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LL | fn foo(b: bool) -> impl Sized {
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| ^^^^^^^^^^
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note: ...which requires computing type of opaque `<impl at $DIR/method-compatability-via-leakage-cycle.rs:17:1: 17:19>::foo::{opaque#0}`...
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--> $DIR/method-compatability-via-leakage-cycle.rs:21:24
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LL | fn foo(b: bool) -> impl Sized {
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| ^^^^^^^^^^
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note: ...which requires borrow-checking `<impl at $DIR/method-compatability-via-leakage-cycle.rs:17:1: 17:19>::foo`...
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--> $DIR/method-compatability-via-leakage-cycle.rs:21:5
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LL | fn foo(b: bool) -> impl Sized {
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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note: ...which requires promoting constants in MIR for `<impl at $DIR/method-compatability-via-leakage-cycle.rs:17:1: 17:19>::foo`...
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--> $DIR/method-compatability-via-leakage-cycle.rs:21:5
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LL | fn foo(b: bool) -> impl Sized {
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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note: ...which requires checking if `<impl at $DIR/method-compatability-via-leakage-cycle.rs:17:1: 17:19>::foo` contains FFI-unwind calls...
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--> $DIR/method-compatability-via-leakage-cycle.rs:21:5
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LL | fn foo(b: bool) -> impl Sized {
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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note: ...which requires building MIR for `<impl at $DIR/method-compatability-via-leakage-cycle.rs:17:1: 17:19>::foo`...
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--> $DIR/method-compatability-via-leakage-cycle.rs:21:5
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LL | fn foo(b: bool) -> impl Sized {
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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note: ...which requires match-checking `<impl at $DIR/method-compatability-via-leakage-cycle.rs:17:1: 17:19>::foo`...
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--> $DIR/method-compatability-via-leakage-cycle.rs:21:5
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LL | fn foo(b: bool) -> impl Sized {
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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note: ...which requires type-checking `<impl at $DIR/method-compatability-via-leakage-cycle.rs:17:1: 17:19>::foo`...
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--> $DIR/method-compatability-via-leakage-cycle.rs:21:5
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LL | fn foo(b: bool) -> impl Sized {
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= note: ...which again requires computing type of `<impl at $DIR/method-compatability-via-leakage-cycle.rs:17:1: 17:19>::{anon_assoc#0}`, completing the cycle
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note: cycle used when checking that `<impl at $DIR/method-compatability-via-leakage-cycle.rs:17:1: 17:19>` is well-formed
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--> $DIR/method-compatability-via-leakage-cycle.rs:17:1
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LL | impl Trait for u32 {
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| ^^^^^^^^^^^^^^^^^^
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= note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
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= note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
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error: aborting due to 2 previous errors
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For more information about this error, try `rustc --explain E0391`.
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@ -0,0 +1,30 @@
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//@ revisions: current next
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//@[next] compile-flags: -Znext-solver
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//@ ignore-compare-mode-next-solver (explicit revisions)
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//@ known-bug: #139788
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// Recursively using the trait method inside of an impl in case checking
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// method compatability relies on opaque type leakage currently causes a
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// cycle error.
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trait Trait {
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// desugars to
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// type Assoc: Sized + Send;
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// fn foo(b: bool) -> Self::Assoc;
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fn foo(b: bool) -> impl Sized + Send;
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}
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impl Trait for u32 {
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// desugars to
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// type Assoc = impl_rpit::<Self>;
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// fn foo(b: bool) -> Self::Assoc { .. }
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fn foo(b: bool) -> impl Sized {
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if b {
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u32::foo(false)
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} else {
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1u32
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}
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}
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}
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fn main() {}
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//@ check-pass
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//@ revisions: current next
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//@[next] compile-flags: -Znext-solver
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//@ ignore-compare-mode-next-solver (explicit revisions)
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trait Trait {
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fn foo() -> impl Sized + Send;
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}
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impl Trait for u32 {
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fn foo() -> impl Sized {}
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}
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fn main() {}
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