Automatic Rustup #3894
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Automatic Rustup #3894
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simplify float::classify logic I played around with the float-classify test in the hope of triggering x87 bugs by strategically adding `black_box`, and still the exact expression `@beetrees` suggested [here](rust-lang/rust#129835 (comment)) remains the only case I found where we get the wrong result on x87. Curiously, this bug only occurs when MIR optimizations are enabled -- probably the extra inlining that does is required for LLVM to hit the right "bad" case in the backend. But even for that case, it makes no difference whether `classify` is implemented in the simple bit-pattern-based version or the more complicated version we had before. Without even a single testcase that can distinguish our `classify` from the naive version, I suggest we switch to the naive version.
Don't use `typeck_root_def_id` in codegen for finding closure's root Generating debuginfo in codegen currently peels off all the closure-specific generics (which presumably is done because they're redundant). This doesn't currently work correctly for the bodies we synthesize for async closures's returned coroutines (#128506), leading to #129702. Specifically, `typeck_root_def_id` for some `DefKind::SyntheticCoroutineBody` just returns itself (because it loops while `is_typeck_child` is `true`, and that returns `false` for this defkind), which means we don't end up peeling off the coroutine-specific generics, and we end up encountering an otherwise unreachable `CoroutineWitness` type leading to an ICE. This PR fixes `is_typeck_child` to consider `DefKind::SyntheticCorotuineBody` to be a typeck child, fixing `typeck_root_def_id` and suppressing this debuginfo bug. Fixes #129702
[library/std/src/process.rs] `PartialEq` for `ExitCode` Converting a third-party CLI to a library so started passing around [`std::process::ExitCode`](https://doc.rust-lang.org/std/process/struct.ExitCode.html) in an `Either`. Then I realised the tests can't be modified to compare equality of `ExitCode`s. This PR fixes this oversight.
layout computation: gracefully handle unsized types in unexpected locations This PR reworks the layout computation to eagerly return an error when encountering an unsized field where a sized field was expected, rather than delaying a bug and attempting to recover a layout. This is required, because with trivially false where clauses like `[T]: Sized`, any field can possible be an unsized type, without causing a compile error. Since this PR removes the `delayed_bug` method from the `LayoutCalculator` trait, it essentially becomes the same as the `HasDataLayout` trait, so I've also refactored the `LayoutCalculator` to be a simple wrapper struct around a type that implements `HasDataLayout`. The majority of the diff is whitespace changes, so viewing with whitespace ignored is advised. implements rust-lang/rust#123169 (comment) r? `@compiler-errors` or compiler fixes rust-lang/rust#123134 fixes rust-lang/rust#124182 fixes rust-lang/rust#126939 fixes rust-lang/rust#127737
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@bors r+ |
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☀️ Test successful - checks-actions |
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