Bail on more errors in dyn ty lowering #133394
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HIR ty lowering was modified cc @fmease |
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I do agree with the first commit, less sure about the second one. I feel like in these cases we would ideally silence follow-up errors if they refer to the I don't care about it tbh and the affected error messages all seem like improvements, so @bors r+ rollup |
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…=lcnr
Bail on more errors in dyn ty lowering
If we have more than one principal trait, or if we have a principal trait with errors in it, then bail with `TyKind::Error` rather than attempting lowering. Lowering a dyn trait with more than one principal just arbitrarily chooses the first one and drops the subsequent ones, and lowering a dyn trait path with errors in it is just kinda useless.
This suppresses unnecessary errors which I think is net-good, but also is important to make sure that we don't end up leaking `{type error}` in rust-lang#133388 error messaging :)
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Rollup of 28 pull requests Successful merges: - rust-lang#132605 (CI: increase timeout from 4h to 6h) - rust-lang#133042 (btree: add `{Entry,VacantEntry}::insert_entry`) - rust-lang#133070 (Lexer tweaks) - rust-lang#133136 (Support ranges in `<[T]>::get_many_mut()`) - rust-lang#133140 (Inline ExprPrecedence::order into Expr::precedence) - rust-lang#133248 (CI: split x86_64-msvc-ext job) - rust-lang#133282 (Shorten the `MaybeUninit` `Debug` implementation) - rust-lang#133304 (Revert diagnostics hack to fix ICE 132920) - rust-lang#133326 (Remove the `DefinitelyInitializedPlaces` analysis.) - rust-lang#133362 (No need to re-sort existential preds in relate impl) - rust-lang#133367 (Simplify array length mismatch error reporting (to not try to turn consts into target usizes)) - rust-lang#133394 (Bail on more errors in dyn ty lowering) - rust-lang#133410 (target check_consistency: ensure target feature string makes some basic sense) - rust-lang#133411 (the emscripten OS no longer exists on non-wasm targets) - rust-lang#133419 (Added a doc test for std::path::strip_prefix) - rust-lang#133430 (Tweak parameter mismatch explanation to not say `{unknown}`) - rust-lang#133435 (miri: disable test_downgrade_observe test on macOS) - rust-lang#133443 (Remove dead code stemming from the old effects desugaring (II)) - rust-lang#133449 (std: expose `const_io_error!` as `const_error!`) - rust-lang#133450 (remove "onur-ozkan" from users_on_vacation) - rust-lang#133454 (Update test expectations to accept LLVM 'initializes' attribute) - rust-lang#133458 (Fix `Result` and `Option` not getting a jump to def link generated) - rust-lang#133462 (Use ReadCache for archive reading in bootstrap) - rust-lang#133464 (std::thread: avoid leading whitespace in some panic messages) - rust-lang#133467 (tests: Add recursive associated type bound regression tests) - rust-lang#133470 (Cleanup: delete `//@ pretty-expanded` directive) - rust-lang#133473 (tests: Add regression test for recursive enum with Cow and Clone) - rust-lang#133481 (Disable `avr-rjmp-offset` on Windows for now) r? `@ghost` `@rustbot` modify labels: rollup
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Rollup of 28 pull requests Successful merges: - rust-lang#132605 (CI: increase timeout from 4h to 6h) - rust-lang#133042 (btree: add `{Entry,VacantEntry}::insert_entry`) - rust-lang#133070 (Lexer tweaks) - rust-lang#133136 (Support ranges in `<[T]>::get_many_mut()`) - rust-lang#133140 (Inline ExprPrecedence::order into Expr::precedence) - rust-lang#133248 (CI: split x86_64-msvc-ext job) - rust-lang#133282 (Shorten the `MaybeUninit` `Debug` implementation) - rust-lang#133304 (Revert diagnostics hack to fix ICE 132920) - rust-lang#133326 (Remove the `DefinitelyInitializedPlaces` analysis.) - rust-lang#133362 (No need to re-sort existential preds in relate impl) - rust-lang#133367 (Simplify array length mismatch error reporting (to not try to turn consts into target usizes)) - rust-lang#133394 (Bail on more errors in dyn ty lowering) - rust-lang#133410 (target check_consistency: ensure target feature string makes some basic sense) - rust-lang#133411 (the emscripten OS no longer exists on non-wasm targets) - rust-lang#133419 (Added a doc test for std::path::strip_prefix) - rust-lang#133430 (Tweak parameter mismatch explanation to not say `{unknown}`) - rust-lang#133435 (miri: disable test_downgrade_observe test on macOS) - rust-lang#133443 (Remove dead code stemming from the old effects desugaring (II)) - rust-lang#133449 (std: expose `const_io_error!` as `const_error!`) - rust-lang#133450 (remove "onur-ozkan" from users_on_vacation) - rust-lang#133454 (Update test expectations to accept LLVM 'initializes' attribute) - rust-lang#133458 (Fix `Result` and `Option` not getting a jump to def link generated) - rust-lang#133462 (Use ReadCache for archive reading in bootstrap) - rust-lang#133464 (std::thread: avoid leading whitespace in some panic messages) - rust-lang#133467 (tests: Add recursive associated type bound regression tests) - rust-lang#133470 (Cleanup: delete `//@ pretty-expanded` directive) - rust-lang#133473 (tests: Add regression test for recursive enum with Cow and Clone) - rust-lang#133481 (Disable `avr-rjmp-offset` on Windows for now) r? `@ghost` `@rustbot` modify labels: rollup
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Rollup of 28 pull requests Successful merges: - rust-lang#132605 (CI: increase timeout from 4h to 6h) - rust-lang#133042 (btree: add `{Entry,VacantEntry}::insert_entry`) - rust-lang#133070 (Lexer tweaks) - rust-lang#133136 (Support ranges in `<[T]>::get_many_mut()`) - rust-lang#133140 (Inline ExprPrecedence::order into Expr::precedence) - rust-lang#133248 (CI: split x86_64-msvc-ext job) - rust-lang#133282 (Shorten the `MaybeUninit` `Debug` implementation) - rust-lang#133304 (Revert diagnostics hack to fix ICE 132920) - rust-lang#133326 (Remove the `DefinitelyInitializedPlaces` analysis.) - rust-lang#133362 (No need to re-sort existential preds in relate impl) - rust-lang#133367 (Simplify array length mismatch error reporting (to not try to turn consts into target usizes)) - rust-lang#133394 (Bail on more errors in dyn ty lowering) - rust-lang#133410 (target check_consistency: ensure target feature string makes some basic sense) - rust-lang#133411 (the emscripten OS no longer exists on non-wasm targets) - rust-lang#133419 (Added a doc test for std::path::strip_prefix) - rust-lang#133430 (Tweak parameter mismatch explanation to not say `{unknown}`) - rust-lang#133435 (miri: disable test_downgrade_observe test on macOS) - rust-lang#133443 (Remove dead code stemming from the old effects desugaring (II)) - rust-lang#133449 (std: expose `const_io_error!` as `const_error!`) - rust-lang#133450 (remove "onur-ozkan" from users_on_vacation) - rust-lang#133454 (Update test expectations to accept LLVM 'initializes' attribute) - rust-lang#133458 (Fix `Result` and `Option` not getting a jump to def link generated) - rust-lang#133462 (Use ReadCache for archive reading in bootstrap) - rust-lang#133464 (std::thread: avoid leading whitespace in some panic messages) - rust-lang#133467 (tests: Add recursive associated type bound regression tests) - rust-lang#133470 (Cleanup: delete `//@ pretty-expanded` directive) - rust-lang#133473 (tests: Add regression test for recursive enum with Cow and Clone) - rust-lang#133481 (Disable `avr-rjmp-offset` on Windows for now) r? `@ghost` `@rustbot` modify labels: rollup
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…mpiler-errors Rollup of 12 pull requests Successful merges: - rust-lang#133042 (btree: add `{Entry,VacantEntry}::insert_entry`) - rust-lang#133070 (Lexer tweaks) - rust-lang#133136 (Support ranges in `<[T]>::get_many_mut()`) - rust-lang#133140 (Inline ExprPrecedence::order into Expr::precedence) - rust-lang#133155 (Yet more `rustc_mir_dataflow` cleanups) - rust-lang#133282 (Shorten the `MaybeUninit` `Debug` implementation) - rust-lang#133326 (Remove the `DefinitelyInitializedPlaces` analysis.) - rust-lang#133362 (No need to re-sort existential preds in relate impl) - rust-lang#133367 (Simplify array length mismatch error reporting (to not try to turn consts into target usizes)) - rust-lang#133394 (Bail on more errors in dyn ty lowering) - rust-lang#133410 (target check_consistency: ensure target feature string makes some basic sense) - rust-lang#133435 (miri: disable test_downgrade_observe test on macOS) r? `@ghost` `@rustbot` modify labels: rollup
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Rollup merge of rust-lang#133394 - compiler-errors:dyn-more-errors, r=lcnr Bail on more errors in dyn ty lowering If we have more than one principal trait, or if we have a principal trait with errors in it, then bail with `TyKind::Error` rather than attempting lowering. Lowering a dyn trait with more than one principal just arbitrarily chooses the first one and drops the subsequent ones, and lowering a dyn trait path with errors in it is just kinda useless. This suppresses unnecessary errors which I think is net-good, but also is important to make sure that we don't end up leaking `{type error}` in rust-lang#133388 error messaging :) r? types
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If we have more than one principal trait, or if we have a principal trait with errors in it, then bail with
TyKind::Errorrather than attempting lowering. Lowering a dyn trait with more than one principal just arbitrarily chooses the first one and drops the subsequent ones, and lowering a dyn trait path with errors in it is just kinda useless.This suppresses unnecessary errors which I think is net-good, but also is important to make sure that we don't end up leaking
{type error}in #133388 error messaging :)r? types