S0070: wrong number of effect arguments

Generated from rellum-diagnostics/src/db.rs.

Explanation

Built-in effects and effect wrappers have fixed arity. The compiler checks argument count before lowering so the runtime call receives exactly the values its ABI expects.

Common causes

• calling an effect with a missing argument
• passing an extra value to a zero-argument effect
• calling an effect wrapper with the wrong parameter count

Canonical fixes

• pass the exact number of arguments required by the effect

Before:

sleep!()

After:

sleep!(100)

• remove extra arguments

Before:

now!(1)

After:

now!()

Code example

sleep!()

Links

• RellC diagnostic overview