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Reduce verbosity of cycle errors when possible - #157342
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r? @tiif rustbot has assigned @tiif. Use Why was this reviewer chosen?The reviewer was selected based on:
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The Miri subtree was changed cc @rust-lang/miri |
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When pointing at each step of cycle errors, do not include the code snippet when the note points at the same place as the previous one (by setting the note's span to DUMMY_SP).
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This PR was rebased onto a different main commit. Here's a range-diff highlighting what actually changed. Rebasing is a normal part of keeping PRs up to date, so no action is needed—this note is just to help reviewers. |
tiif
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Jun 11, 2026
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I love this PR, it looks a lot cleaner. Thanks! @bors r+ rollup |
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Reduce verbosity of cycle errors when possible When pointing at each step of cycle errors, do not include the code snippet when the note points at the same place as the previous one (by setting the note's span to DUMMY_SP).
JonathanBrouwer added a commit
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Jun 11, 2026
Reduce verbosity of cycle errors when possible When pointing at each step of cycle errors, do not include the code snippet when the note points at the same place as the previous one (by setting the note's span to DUMMY_SP).
JonathanBrouwer added a commit
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Jun 11, 2026
Reduce verbosity of cycle errors when possible When pointing at each step of cycle errors, do not include the code snippet when the note points at the same place as the previous one (by setting the note's span to DUMMY_SP).
JonathanBrouwer added a commit
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Jun 11, 2026
Reduce verbosity of cycle errors when possible When pointing at each step of cycle errors, do not include the code snippet when the note points at the same place as the previous one (by setting the note's span to DUMMY_SP).
JonathanBrouwer added a commit
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Jun 11, 2026
Reduce verbosity of cycle errors when possible When pointing at each step of cycle errors, do not include the code snippet when the note points at the same place as the previous one (by setting the note's span to DUMMY_SP).
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…uwer Rollup of 23 pull requests Successful merges: - #157716 (update Enzyme, June'26) - #149793 (Add inline asm support for amdgpu) - #152852 (Remove driver_lint_caps) - #155299 (make repr_transparent_non_zst_fields a hard error) - #155439 (Enable Cargo's new build-dir layout) - #157612 (Add a test where subtyping inhibits coercion.) - #157626 (Autogenerate unstable compiler flag stubs for unstable-book) - #157667 (Rename typing modes to better describe real usage) - #156212 (Additionally gate negative bounds behind new `-Zinternal-testing-features`) - #157342 (Reduce verbosity of cycle errors when possible) - #157366 (Add a regression test for an unconstrained TransmuteFrom ICE) - #157459 (rustc_target: callconv: powerpc64: Remove unreachable fallback code path) - #157658 (UnsafeCell: mention shared-ref-to-interior case, fix aliasing model inaccuracy) - #157698 (Remove an unnecessary cloning) - #157699 (Arg splat experiment - hir FnDecl impl) - #157713 (resolve: Remove exported imports from `maybe_unused_trait_imports`) - #157722 (Move create_scope_map to rustc_codegen_ssa.) - #157725 (Keep generic suggestion for macro-expanded missing-type items) - #157733 (Remove old FIXMEs about nocapture attribute) - #157737 (Reorganize `tests/ui/issues` [7/N]) - #157746 (supports_c_variadic_definitions: extend checklist for new targets) - #157763 (Move unused target expression error to appropriate place and rename it) - #157768 (codegen_ssa: peel trans. wrappers on scalable vecs)
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…uwer Rollup of 23 pull requests Successful merges: - #157716 (update Enzyme, June'26) - #149793 (Add inline asm support for amdgpu) - #152852 (Remove driver_lint_caps) - #155299 (make repr_transparent_non_zst_fields a hard error) - #155439 (Enable Cargo's new build-dir layout) - #157612 (Add a test where subtyping inhibits coercion.) - #157626 (Autogenerate unstable compiler flag stubs for unstable-book) - #157667 (Rename typing modes to better describe real usage) - #156212 (Additionally gate negative bounds behind new `-Zinternal-testing-features`) - #157342 (Reduce verbosity of cycle errors when possible) - #157366 (Add a regression test for an unconstrained TransmuteFrom ICE) - #157459 (rustc_target: callconv: powerpc64: Remove unreachable fallback code path) - #157658 (UnsafeCell: mention shared-ref-to-interior case, fix aliasing model inaccuracy) - #157698 (Remove an unnecessary cloning) - #157699 (Arg splat experiment - hir FnDecl impl) - #157713 (resolve: Remove exported imports from `maybe_unused_trait_imports`) - #157722 (Move create_scope_map to rustc_codegen_ssa.) - #157725 (Keep generic suggestion for macro-expanded missing-type items) - #157733 (Remove old FIXMEs about nocapture attribute) - #157737 (Reorganize `tests/ui/issues` [7/N]) - #157746 (supports_c_variadic_definitions: extend checklist for new targets) - #157763 (Move unused target expression error to appropriate place and rename it) - #157768 (codegen_ssa: peel trans. wrappers on scalable vecs)
JonathanBrouwer added a commit
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Jun 11, 2026
Reduce verbosity of cycle errors when possible When pointing at each step of cycle errors, do not include the code snippet when the note points at the same place as the previous one (by setting the note's span to DUMMY_SP).
rust-borsBot
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…uwer Rollup of 23 pull requests Successful merges: - #157716 (update Enzyme, June'26) - #149793 (Add inline asm support for amdgpu) - #155299 (make repr_transparent_non_zst_fields a hard error) - #155439 (Enable Cargo's new build-dir layout) - #157612 (Add a test where subtyping inhibits coercion.) - #157626 (Autogenerate unstable compiler flag stubs for unstable-book) - #157667 (Rename typing modes to better describe real usage) - #149749 (Make `BorrowedBuf` and `BorrowedCursor` generic over the data) - #156212 (Additionally gate negative bounds behind new `-Zinternal-testing-features`) - #157342 (Reduce verbosity of cycle errors when possible) - #157366 (Add a regression test for an unconstrained TransmuteFrom ICE) - #157459 (rustc_target: callconv: powerpc64: Remove unreachable fallback code path) - #157658 (UnsafeCell: mention shared-ref-to-interior case, fix aliasing model inaccuracy) - #157698 (Remove an unnecessary cloning) - #157699 (Arg splat experiment - hir FnDecl impl) - #157713 (resolve: Remove exported imports from `maybe_unused_trait_imports`) - #157722 (Move create_scope_map to rustc_codegen_ssa.) - #157725 (Keep generic suggestion for macro-expanded missing-type items) - #157733 (Remove old FIXMEs about nocapture attribute) - #157737 (Reorganize `tests/ui/issues` [7/N]) - #157746 (supports_c_variadic_definitions: extend checklist for new targets) - #157763 (Move unused target expression error to appropriate place and rename it) - #157768 (codegen_ssa: peel trans. wrappers on scalable vecs)
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Rollup of 24 pull requests Successful merges: - #157716 (update Enzyme, June'26) - #149793 (Add inline asm support for amdgpu) - #155299 (make repr_transparent_non_zst_fields a hard error) - #157612 (Add a test where subtyping inhibits coercion.) - #157626 (Autogenerate unstable compiler flag stubs for unstable-book) - #157667 (Rename typing modes to better describe real usage) - #149749 (Make `BorrowedBuf` and `BorrowedCursor` generic over the data) - #155113 (Ensure Send/Sync impl for std::process::CommandArgs) - #156212 (Additionally gate negative bounds behind new `-Zinternal-testing-features`) - #157342 (Reduce verbosity of cycle errors when possible) - #157366 (Add a regression test for an unconstrained TransmuteFrom ICE) - #157459 (rustc_target: callconv: powerpc64: Remove unreachable fallback code path) - #157658 (UnsafeCell: mention shared-ref-to-interior case, fix aliasing model inaccuracy) - #157698 (Remove an unnecessary cloning) - #157699 (Arg splat experiment - hir FnDecl impl) - #157713 (resolve: Remove exported imports from `maybe_unused_trait_imports`) - #157722 (Move create_scope_map to rustc_codegen_ssa.) - #157723 (Move uninhabited unreachable code lint to rustc_mir_transform) - #157725 (Keep generic suggestion for macro-expanded missing-type items) - #157733 (Remove old FIXMEs about nocapture attribute) - #157737 (Reorganize `tests/ui/issues` [7/N]) - #157746 (supports_c_variadic_definitions: extend checklist for new targets) - #157763 (Move unused target expression error to appropriate place and rename it) - #157768 (codegen_ssa: peel trans. wrappers on scalable vecs)
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rust-timer added a commit
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Jun 12, 2026
Rollup merge of #157342 - estebank:cycle-error-verbose, r=tiif Reduce verbosity of cycle errors when possible When pointing at each step of cycle errors, do not include the code snippet when the note points at the same place as the previous one (by setting the note's span to DUMMY_SP).
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Rollup of 24 pull requests Successful merges: - rust-lang/rust#157716 (update Enzyme, June'26) - rust-lang/rust#149793 (Add inline asm support for amdgpu) - rust-lang/rust#155299 (make repr_transparent_non_zst_fields a hard error) - rust-lang/rust#157612 (Add a test where subtyping inhibits coercion.) - rust-lang/rust#157626 (Autogenerate unstable compiler flag stubs for unstable-book) - rust-lang/rust#157667 (Rename typing modes to better describe real usage) - rust-lang/rust#149749 (Make `BorrowedBuf` and `BorrowedCursor` generic over the data) - rust-lang/rust#155113 (Ensure Send/Sync impl for std::process::CommandArgs) - rust-lang/rust#156212 (Additionally gate negative bounds behind new `-Zinternal-testing-features`) - rust-lang/rust#157342 (Reduce verbosity of cycle errors when possible) - rust-lang/rust#157366 (Add a regression test for an unconstrained TransmuteFrom ICE) - rust-lang/rust#157459 (rustc_target: callconv: powerpc64: Remove unreachable fallback code path) - rust-lang/rust#157658 (UnsafeCell: mention shared-ref-to-interior case, fix aliasing model inaccuracy) - rust-lang/rust#157698 (Remove an unnecessary cloning) - rust-lang/rust#157699 (Arg splat experiment - hir FnDecl impl) - rust-lang/rust#157713 (resolve: Remove exported imports from `maybe_unused_trait_imports`) - rust-lang/rust#157722 (Move create_scope_map to rustc_codegen_ssa.) - rust-lang/rust#157723 (Move uninhabited unreachable code lint to rustc_mir_transform) - rust-lang/rust#157725 (Keep generic suggestion for macro-expanded missing-type items) - rust-lang/rust#157733 (Remove old FIXMEs about nocapture attribute) - rust-lang/rust#157737 (Reorganize `tests/ui/issues` [7/N]) - rust-lang/rust#157746 (supports_c_variadic_definitions: extend checklist for new targets) - rust-lang/rust#157763 (Move unused target expression error to appropriate place and rename it) - rust-lang/rust#157768 (codegen_ssa: peel trans. wrappers on scalable vecs)
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When pointing at each step of cycle errors, do not include the code snippet when the note points at the same place as the previous one (by setting the note's span to DUMMY_SP).