Allow initializing NonZero with literals
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oli-obk
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We'll also need to update the Reference for this, and the details in that PR would help form another basis for the FCP here. cc @ehuss |
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oli-obk
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Jul 7, 2025
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| fn main() { | ||
| let _: std::num::NonZero<u8> = 256; | ||
| //~^ ERROR literal out of range |
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Here's the erroring example
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This basically implements rust-lang/rfcs#3786 by teaching the language about
NonZeroand the literalsNonZerosupports.I believe it is a minor enough feature that it either doesn't need an RFC and can just be FCPed or it is a simple enough RFC that @rust-lang/lang could FCP it to set a precedent for doing this for other libcore types. Anything like this for user types would of course require a full RFC as there are many open questions around it that
NonZero<T>just doesn't have.