Go 1.18, generics and fuzz testing

[Kamil Ziemian]

Hello,

I accidentally initialize go.mod files for both tutorial on generics (https://go.dev/doc/tutorial/generics) and for fuzzing (https://go.dev/doc/tutorial/fuzz) with command

> go mod init example/nameOfSubject

and as a result both contains in respective go.mod file line

> go 1.17

In the case of generic mere writing function definition

> func SumIntsOrFloats[K comparable, V int64 | float64](m map[K]V) V {
 >        var s V
        for _, v := range m {
                s += v
        }
        return s
}

without even calling it produce a compile error

> ./main.go:39:22: type parameters require go1.18 or later

To make it work I needed to change go.mod file to this with proper version 1.18.

But in the case of fuzzing I have done all the examples from tutorial without once encountering error of this type.

Can anyone check if it have similar issue? I don't know if it is minor problem or sign of some substantial flaw, but it is worth checking on few machines.

Best regards,

Kamil

[Ian Lance Taylor]

Fuzzing is implemented in the tools, not the language itself, so if
you are using the 1.18 tools it works regardless of the requested
language version.

Ian

[Kamil Ziemian]

Thank you for information. There is so many things about Go and its tool chain that I need to learn and think about.

Best regards,

Kamil