diff options
4 files changed, 71 insertions, 1 deletions
diff --git a/compiler/rustc_borrowck/src/region_infer/opaque_types/mod.rs b/compiler/rustc_borrowck/src/region_infer/opaque_types/mod.rs index 72615cb33b3..95c5366a6c8 100644 --- a/compiler/rustc_borrowck/src/region_infer/opaque_types/mod.rs +++ b/compiler/rustc_borrowck/src/region_infer/opaque_types/mod.rs @@ -503,7 +503,16 @@ pub(crate) fn apply_computed_concrete_opaque_types<'tcx>( let mut errors = Vec::new(); for &(key, hidden_type) in opaque_types { let Some(expected) = get_concrete_opaque_type(concrete_opaque_types, key.def_id) else { - assert!(tcx.use_typing_mode_borrowck(), "non-defining use in defining scope"); + if !tcx.use_typing_mode_borrowck() { + if let ty::Alias(ty::Opaque, alias_ty) = hidden_type.ty.kind() + && alias_ty.def_id == key.def_id.to_def_id() + && alias_ty.args == key.args + { + continue; + } else { + unreachable!("non-defining use in defining scope"); + } + } errors.push(DeferredOpaqueTypeError::NonDefiningUseInDefiningScope { span: hidden_type.span, opaque_type_key: key, diff --git a/tests/ui/impl-trait/non-defining-uses/ice-issue-146191.current.stderr b/tests/ui/impl-trait/non-defining-uses/ice-issue-146191.current.stderr new file mode 100644 index 00000000000..ccbe2d3593c --- /dev/null +++ b/tests/ui/impl-trait/non-defining-uses/ice-issue-146191.current.stderr @@ -0,0 +1,29 @@ +error[E0277]: the trait bound `(): ReturnsSend` is not satisfied + --> $DIR/ice-issue-146191.rs:6:52 + | +LL | fn create_complex_future() -> impl Future<Output = impl ReturnsSend> { + | ^^^^^^^^^^^^^^^^ the trait `ReturnsSend` is not implemented for `()` + | +help: this trait has no implementations, consider adding one + --> $DIR/ice-issue-146191.rs:14:1 + | +LL | trait ReturnsSend {} + | ^^^^^^^^^^^^^^^^^ +note: required by a bound in an opaque type + --> $DIR/ice-issue-146191.rs:6:57 + | +LL | fn create_complex_future() -> impl Future<Output = impl ReturnsSend> { + | ^^^^^^^^^^^ + +error[E0733]: recursion in an async block requires boxing + --> $DIR/ice-issue-146191.rs:8:5 + | +LL | async { create_complex_future().await } + | ^^^^^ ----------------------------- recursive call here + | + = note: a recursive `async fn` call must introduce indirection such as `Box::pin` to avoid an infinitely sized future + +error: aborting due to 2 previous errors + +Some errors have detailed explanations: E0277, E0733. +For more information about an error, try `rustc --explain E0277`. diff --git a/tests/ui/impl-trait/non-defining-uses/ice-issue-146191.next.stderr b/tests/ui/impl-trait/non-defining-uses/ice-issue-146191.next.stderr new file mode 100644 index 00000000000..e8b551c65fc --- /dev/null +++ b/tests/ui/impl-trait/non-defining-uses/ice-issue-146191.next.stderr @@ -0,0 +1,17 @@ +error[E0282]: type annotations needed + --> $DIR/ice-issue-146191.rs:8:5 + | +LL | async { create_complex_future().await } + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot infer type + +error[E0282]: type annotations needed + --> $DIR/ice-issue-146191.rs:8:5 + | +LL | async { create_complex_future().await } + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot infer type + | + = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no` + +error: aborting due to 2 previous errors + +For more information about this error, try `rustc --explain E0282`. diff --git a/tests/ui/impl-trait/non-defining-uses/ice-issue-146191.rs b/tests/ui/impl-trait/non-defining-uses/ice-issue-146191.rs new file mode 100644 index 00000000000..356f7d01eb9 --- /dev/null +++ b/tests/ui/impl-trait/non-defining-uses/ice-issue-146191.rs @@ -0,0 +1,15 @@ +//@ edition: 2024 +//@ revisions: current next +//@[next] compile-flags: -Znext-solver +//@ ignore-compare-mode-next-solver (explicit revisions) + +fn create_complex_future() -> impl Future<Output = impl ReturnsSend> { + //[current]~^ ERROR the trait bound `(): ReturnsSend` is not satisfied + async { create_complex_future().await } + //[current]~^ ERROR recursion in an async block requires + //[next]~^^ ERROR type annotations needed + //[next]~| ERROR type annotations needed +} + +trait ReturnsSend {} +fn main() {} |