Nicer ICE for #67981 #110872
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Nicer ICE for #67981 #110872
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r? @wesleywiser (rustbot has picked a reviewer for you, use r? to override) |
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Thanks @Jules-Bertholet! @bors r+ rollup |
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…ywiser Nicer ICE for rust-lang#67981 Provides a slightly nicer ICE for rust-lang#67981, documenting the problem. A proper fix will be necessary before `#![feature(unsized_fn_params)]` can be stabilized. The problem is that the design of the `"rust-call"` ABI is fundamentally not compatible with `unsized_fn_params`. `"rust-call"` functions need to collect their arguments into a tuple, but if the arguments are not `Sized`, said tuple is potentially not even a valid type—and if it is, it requires `alloca` to create. `@rustbot` label +A-abi +A-codegen +F-unboxed_closures +F-unsized_fn_params
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…iaskrgr Rollup of 7 pull requests Successful merges: - rust-lang#110426 (docs(style): add more let-else examples) - rust-lang#110804 (Remove repeated definite articles) - rust-lang#110814 (Sprinkle some `#[inline]` in `rustc_data_structures::tagged_ptr`) - rust-lang#110816 (Migrate `rustc_passes` to translatable diagnostics) - rust-lang#110864 (`IntoFuture::into_future` is no longer unstable) - rust-lang#110866 (Make `method-not-found-generic-arg-elision.rs` error message not path dependent) - rust-lang#110872 (Nicer ICE for rust-lang#67981) Failed merges: r? `@ghost` `@rustbot` modify labels: rollup
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Provides a slightly nicer ICE for #67981, documenting the problem. A proper fix will be necessary before
#![feature(unsized_fn_params)]can be stabilized.The problem is that the design of the
"rust-call"ABI is fundamentally not compatible withunsized_fn_params."rust-call"functions need to collect their arguments into a tuple, but if the arguments are notSized, said tuple is potentially not even a valid type—and if it is, it requiresallocato create.@rustbot label +A-abi +A-codegen +F-unboxed_closures +F-unsized_fn_params