Annotate panic! reasons during enum layout #118974
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Add some reasons to the panics, and use more exhaustive matches.
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…iaskrgr Rollup of 3 pull requests Successful merges: - rust-lang#118962 (Annotate some bugs) - rust-lang#118969 (coverage: Use `Waker::noop` in async tests) - rust-lang#118974 (Annotate panic! reasons during enum layout) Failed merges: - rust-lang#111658 (Refactor pre-getopts command line argument handling) - rust-lang#117449 (Avoid silencing relevant follow-up errors) r? `@ghost` `@rustbot` modify labels: rollup
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Rollup merge of rust-lang#118974 - workingjubilee:why-worry-about-enum-abi, r=davidtwco Annotate panic! reasons during enum layout Add some reasons to the panics, and use more exhaustive matches. Also see: rust-lang#118955
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…-fn, r=b-naber
Extract `layout_of_{struct,enum}` fn
While writing rust-lang#118974 I noticed it was annoying to navigate a huge, several hundred line function, which handles many subcases, and make confident declarations about what part of the flow of execution the compiler would be in. To help with that, this breaks out `layout_of_struct_or_enum`'s fundamental logic into a pair of functions, one for each case. It changes essentially none of that logic, merely moves it around.
Because "the layout of an ADT" feels like a somewhat nebulous subject, I chose to deliberately avoid any expansions to LayoutCalculator's public API, though such does feel like a possible logical next step. There are, indeed, many logical next steps. I'm not taking any of them here, yet, because this comparatively tiny refactor is a prerequisite for all of them.
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Rollup merge of rust-lang#119012 - workingjubilee:extract-enum-layout-fn, r=b-naber Extract `layout_of_{struct,enum}` fn While writing rust-lang#118974 I noticed it was annoying to navigate a huge, several hundred line function, which handles many subcases, and make confident declarations about what part of the flow of execution the compiler would be in. To help with that, this breaks out `layout_of_struct_or_enum`'s fundamental logic into a pair of functions, one for each case. It changes essentially none of that logic, merely moves it around. Because "the layout of an ADT" feels like a somewhat nebulous subject, I chose to deliberately avoid any expansions to LayoutCalculator's public API, though such does feel like a possible logical next step. There are, indeed, many logical next steps. I'm not taking any of them here, yet, because this comparatively tiny refactor is a prerequisite for all of them.
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Add some reasons to the panics, and use more exhaustive matches.
Also see: #118955