Rollup of 10 pull requests #121896
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Rollup of 10 pull requests #121896
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After desugaring, `let` expressions should only appear inside `if` expressions or `match` guards, possibly nested within a let-chain. In both cases they are specifically handled by the lowerings of those expressions, so this case is currently unreachable.
fix typo in documentation for std::fs::Permissions Please check and re-check this PR carefully to see if I got this right. But by my logic, if the `read_only` function returns `true`, I would not expect be able to write to the file (it being read only); so this text is meant to clarify that `read_only` being `false` doesn't mean *you* can actually write to the file, just that "in general" someone is able to.
Update E0716.md for clarity When reading through this, I got slightly hung up thinking the `let` it was referring to was the `let tmp` on line 25, which was confusing considering the comment states that the temporary is freed at the end of the block. I think adding this clarification could potentially help some beginners like myself without being overly verbose.
attempt to further clarify addr_of docs
…est31 Move `gather_comments`. To the module where it is used, so it doesn't have to be `pub`. r? ````@est31````
Move `HandleStore` into `server.rs`. This just moves the server-relevant parts of handles into `server.rs`. It introduces a new higher-order macro `with_api_handle_types` to avoid some duplication. This fixes two `FIXME` comments, and makes things clearer, by not having server code in `client.rs`. r? ````@bjorn3````
…=cuviper Remove hidden use of Global Fixes rust-lang#121797
…les, r=workingjubilee Use the guaranteed precision of a couple of float functions in docs
…r-errors Account for unmet T: !Copy in E0277 message ``` error[E0277]: the trait bound `T: !Copy` is not satisfied --> $DIR/simple.rs:10:16 | LL | not_copy::<T>(); | ^ the trait bound `T: !Copy` is not satisfied ``` instead of the current ``` error[E0277]: the trait bound `T: !Copy` is not satisfied --> $DIR/simple.rs:10:16 | LL | not_copy::<T>(); | ^ the trait `!Copy` is not implemented for `T` ```
style library/core/src/error.rs Add an extra blank line for clarity in distinguishing implementations.
The ordinary lowering of `thir::ExprKind::Let` is unreachable After desugaring, `let` expressions should only appear inside `if` expressions or `match` guards, possibly nested within a let-chain. In both cases they are specifically handled by the lowerings of those expressions, so this case is currently unreachable. --- Context: https://rust-lang.zulipchat.com/#narrow/stream/182449-t-compiler.2Fhelp/topic/Lowering.20of.20.60thir.3A.3AExprKind.3A.3ALet.60.20is.20unreachable My conclusions are partly based on the observation that stubbing out this match arm doesn't cause any test failures. So either this really is unreachable, or it can be reached in some obscure circumstances that our test suite doesn't cover. If we end up needing this code (or something like it) for an implementation of rust-lang/rfcs#3573, it should be easy enough to pull it back out of version control history. I looked into having the `if`/`match` lowerings call back into `expr_into_dest`, but from what I can tell that won't work well, because there are extra scoping considerations that require some awareness of the enclosing if/match. r? `@Nadrieril`
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Successful merges:
gather_comments. #121815 (Movegather_comments.)HandleStoreintoserver.rs. #121835 (MoveHandleStoreintoserver.rs.)thir::ExprKind::Letis unreachable #121892 (The ordinary lowering ofthir::ExprKind::Letis unreachable)r? @ghost
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