vrp bug?

[Forum User]

On Sunday, 14 June 2026 at 09:06:13 UTC, Kagamin wrote:
> ```
> char BitsToChar(in uint bit5)
> {
> 	const uint b=bit5&0x1f;
> 	return b<10?'0'+b:'a'+(b-10);
> }
> ```
> This code can't implicitly convert to char, but a version 
> without parentheses `'a'+b-10` can. Is this intended or I miss 
> something?

```
    (b - 10)
```

has type `uint` and wraps if `b` < 10.

```
    'a' + b - 10
```

is evaluated left to right, `b` is < 32, so `'a' + b` is < 129. 
Substract 10 and the expression is < 119. It fits in the range of 
char.

But the whole thing is questionable:

    - Drop the `const` in `b`'s declaration and the Error shows up 
in
      the unparenthesized version, too.

    - try `+127` and `+128` instead of `-10`.