static just like const can only be literals

[mardaravicius]

static int s = xsGetRandomNumber();

would produce an error

Error 0334 `xsGetRandomNumber` is not a valid variable for an integer constant.

but the checker says it's fine

of course, unlike const, they can be changed to another value that is not a literal

static int s = 0;
s = xsGetRandomNumber(); /* this is fine */

[Divy1211]

That makes sense, a static variable has program lifetime, it must be defined by a constexpr. I can add this check, thanks for the report

[Divy1211]

Fixed in v0.1.3