Implement the alternative try block desugaring#148725
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This PR was rebased onto a different master 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. |
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tests/mir-opt/pre-codegen/option_bubble_debug.option_traits.PreCodegen.after.panic-abort.mir
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Nov 14, 2025
Rollup of 4 pull requests Successful merges: - #148638 (Fix ICE for repr simd on non struct) - #148725 (Implement the alternative `try` block desugaring) - #148777 (Lock shards while emitting depth limit error.) - #148933 (Add note for option llvm.download-ci-llvm) r? `@ghost` `@rustbot` modify labels: rollup
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Rollup merge of #148725 - scottmcm:experiment-new-try-block-v3, r=petrochenkov Implement the alternative `try` block desugaring As discussed in rust-lang/rfcs#3721 (comment), update the `try` in nightly to match the RFC as a way to experiment. This addresses the following unresolved issue from #31436 > Address issues with type inference (`try { expr? }?` currently requires an explicit type annotation somewhere).
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…pe, r=scottmcm Constify `residual_into_try_type` Feature: `const_try_residual` (related to `try_trait_v2_residual`) Tracking issue: rust-lang#91285 Constify `residual_into_try_type` introduced in rust-lang#148725. r? `@scottmcm`
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…pe, r=scottmcm Constify `residual_into_try_type` Feature: `const_try_residual` (related to `try_trait_v2_residual`) Tracking issue: rust-lang#91285 Constify `residual_into_try_type` introduced in rust-lang#148725. r? ``@scottmcm``
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…v3, r=petrochenkov Implement the alternative `try` block desugaring As discussed in rust-lang/rfcs#3721 (comment), update the `try` in nightly to match the RFC as a way to experiment. This addresses the following unresolved issue from rust-lang#31436 > Address issues with type inference (`try { expr? }?` currently requires an explicit type annotation somewhere).
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Experimentally add *heterogeneous* `try` blocks rust-lang#148725 moved the default to being homogeneous; this adds heterogeneous ones back under an obvious-bikeshed syntax so people can experiment with that as well. Essentially resolves rust-lang#149025 by letting them move to this syntax instead. New tracking issue: rust-lang#149488 Related RFC: rust-lang/rfcs#3721 (comment) (specifically about experimenting)
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Rollup merge of #149489 - scottmcm:try-bikeshed, r=nnethercote Experimentally add *heterogeneous* `try` blocks #148725 moved the default to being homogeneous; this adds heterogeneous ones back under an obvious-bikeshed syntax so people can experiment with that as well. Essentially resolves #149025 by letting them move to this syntax instead. New tracking issue: #149488 Related RFC: rust-lang/rfcs#3721 (comment) (specifically about experimenting)
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Experimentally add *heterogeneous* `try` blocks rust-lang/rust#148725 moved the default to being homogeneous; this adds heterogeneous ones back under an obvious-bikeshed syntax so people can experiment with that as well. Essentially resolves rust-lang/rust#149025 by letting them move to this syntax instead. New tracking issue: rust-lang/rust#149488 Related RFC: rust-lang/rfcs#3721 (comment) (specifically about experimenting)
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Experimentally add *heterogeneous* `try` blocks rust-lang/rust#148725 moved the default to being homogeneous; this adds heterogeneous ones back under an obvious-bikeshed syntax so people can experiment with that as well. Essentially resolves rust-lang/rust#149025 by letting them move to this syntax instead. New tracking issue: rust-lang/rust#149488 Related RFC: rust-lang/rfcs#3721 (comment) (specifically about experimenting)
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…pe, r=scottmcm Constify `residual_into_try_type` Feature: `const_try_residual` (related to `try_trait_v2_residual`) Tracking issue: rust-lang#91285 Constify `residual_into_try_type` introduced in rust-lang#148725. r? ``@scottmcm``
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As discussed in rust-lang/rfcs#3721 (comment), update the
tryin nightly to match the RFC as a way to experiment.This addresses the following unresolved issue from #31436