num: have Num inherit from Clone #14212
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A numeric type which can't be cloned is nonsense. If this weren't used for BigInt etc, it could even be Copy.
emberian
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I believe that this was reserved for cc @bjz |
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well I can see Primitive needing Copy, but I really feel like Clone should On Wed, May 14, 2014 at 4:58 PM, Alex Crichton notifications@github.comwrote:
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I'm not convinced that because all numbers are clonable, the trait that numbers implement should require numbers be clonable. |
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Closing this. Isn't that important. |
flip1995
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Mar 20, 2025
…t-lang#14216) The lint for function calls was previously restricted to functions taking exactly one argument. This was not documented. Generalizing the lint to an arbitrary number of arguments in the function call requires special casing some macro expansions from the standard library. Macros such as `panic!()` or `assert_eq!()` exist since Rust 1.0.0, but modern stdlib expand those macros into calls to functions introduced in later Rust versions. While it is desirable to lint code inside macros, using MSRV-incompatible functions coming from `core` in macro expansions has been special-cased to not trigger this lint. Also, code coming from compiler desugaring may contain function calls (for example, `a..=b` is now desugared into `RangeInclusive::new(a, b)`. Those should not be linted either as the compiler is allowed to use unstable function calls. Fix rust-lang#14212 changelog: [`incompatible_msrv`]: lint function calls with any argument count
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