cast: The example code makes no mention of warn(overflowing_literals)

[mpe]

When you run the cast example there are lots of warnings, but the code doesn't make any mention of them, which is confusing.

warning: literal out of range for u8, #[warn(overflowing_literals)] on by default
note: in expansion of format_args!
<std macros>:2:25: 2:56 note: expansion site
<std macros>:1:1: 2:62 note: in expansion of print!
<std macros>:3:1: 3:54 note: expansion site
<std macros>:1:1: 3:58 note: in expansion of println!

etc.

These seem to be caused by the literals that are cast, ie. not the casts themselves. eg. it's fixed by changing:

println!("1000 as a u8 is : {}", 1000 as u8);

to

println!("1000 as a u8 is : {}", 1000u16 as u8);

[mdinger]

Please link to the example. Makes it easier to find. The cast example in question.

A simple fix is to add #![allow(overflowing_literals)] at the beginning of the example like #605 does.