Multiple const in one variable declaration

Question

A colleague of mine is going a bit nuts with const in ANSI C and I wanted to know what you guys thought about it. He writes stuff like this for example:

const uint8* const pt_data

I understand where he's going with this but for me it makes the reading and maintainability harder with all these const everywhere.

Answer 1

It's a const pointer pointing to const data.

• The first const prevents *pt_data = 10;
• The second const prevents pt_data = stuff;

It looks like it can be pretty legitimate.