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Bug: discriminant is marked as collided when using ranged alternatives with default or catch_all attributes. #144

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AlexSherbinin opened this issue Mar 10, 2024 · 1 comment · May be fixed by #145
Open

Bug: discriminant is marked as collided when using ranged alternatives with default or catch_all attributes. #144

AlexSherbinin opened this issue Mar 10, 2024 · 1 comment · May be fixed by #145

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@AlexSherbinin
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I have tried this code:

#[derive(FromPrimitive)]
#[repr(u8)]
enum Number {
    Zero = 0,
    #[num_enum(alternatives = [2..=3])]
    OneTwoThree = 1,
    #[num_enum(catch_all)]
    Other(u8)
}

And got following error:

error: The discriminant '2' collides with a value attributed to a previous variant
   |
15 |     Other(u8)
   |     ^^^^^

When there is no collision between Other and OneTwoThree variant
AlexSherbinin added a commit to AlexSherbinin/num_enum that referenced this issue Mar 10, 2024
@AlexSherbinin
Fixed illicitonion#144
5701e4b
@AlexSherbinin AlexSherbinin linked a pull request Mar 10, 2024 that will close this issue
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AlexSherbinin added a commit to AlexSherbinin/num_enum that referenced this issue Mar 10, 2024
@AlexSherbinin
Fixed illicitonion#144
85a0483
@AlexSherbinin
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Noticed that it's ok for default variants to emit this error because with this attribute it's allowed to have a discriminant. Anyway it stays catch_all only bug.

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Fixed #144 AlexSherbinin/num_enum
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@AlexSherbinin