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Update library/core/src/num/mod.rs

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Co-authored-by: LingMan <LingMan@users.noreply.github.com>
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Squirrel 2021-06-19 14:03:24 +01:00 committed by gilescope
parent 5f78bb48ec
commit e93d03b28a
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library/core/src/num/mod.rs
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@ -1074,7 +1074,7 @@ fn from_str_radix<T: FromStrRadixHelper>(src: &str, radix: u32) -> Result<T, Par
// This bound is when `radix.pow(digits.len()) - 1 <= T::MAX` but the condition // This bound is when `radix.pow(digits.len()) - 1 <= T::MAX` but the condition
// above is a faster (conservative) approximation of this. // above is a faster (conservative) approximation of this.
// //
// Consider radix 16 as it has the most chance of overflow per digit: // Consider radix 16 as it has the highest information density per digit and will thus overflow the earliest:
// `u8::MAX` is `ff` - any str of len 2 is guaranteed to not overflow. // `u8::MAX` is `ff` - any str of len 2 is guaranteed to not overflow.
// `i8::MAX` is `7f` - only a str of len 1 is guaranteed to not overflow. // `i8::MAX` is `7f` - only a str of len 1 is guaranteed to not overflow.
unsafe { unsafe {