emacs: highlight macro_name! in macro invocations using [] delimiters
#14087
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r? @pnkfelix |
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part of #8793 |
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this should close #13979 |
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Thanks for the heads-up @tomjakubowski |
bors
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Feb 13, 2023
Support computing layout of RPIT And some refactoring to make code more type safe.
flip1995
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Feb 20, 2025
Checks for `Read::bytes()` on an unbuffered Read type. The default implementation calls `read` for each byte, which can be very inefficient for data that’s not in memory, such as `File`. Considerations which I'd like to have feedback on: * Currently this lint triggers when `.bytes()` is called on any type that implements `std::io::Read` but not `std::io::BufRead`. This is quite aggressive and in and may result in false positives. Alternatives: * Only trigger on concrete types, not generic types. This does mean that cases where a function is generic over a `R: Read` and calls `.bytes()` are not caught by the lint, which could be quite a nasty case of this bug. * Only trigger on an allowlist of stdlib types * Compromise: Is it possible to make this lint `pedantic` on types that are not on a allowlist? * Theoretically, a trait implementation of `Read` could override `.bytes()` with an efficient implementation. I'm not sure how to add this check to the lint, and I can't find any cases of this being done in practice. * I don't think an automatic fix for this lint is possible, but I'd love to be proven wrong * This is my first time contributing to clippy, please let me know if I did anything wrong Fixes rust-lang#14087 ``` changelog: [`unbuffered_bytes`]: new lint ```
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