Non payable transferred value

What it does

Warns about the usage of self.env().transferred_value() in non-payable functions.

Why is this bad?

self.env().transferred_value() will always return 0 in non-payable functions. If transferred_value() is needed, the function should have #[ink(..., payable)]

More info

• https://docs.rs/ink/latest/ink/struct.EnvAccess.html#method.transferred_value

Implementation

The detector's implementation can be found at this link.