Reading C Type Declarations: http://unixwiz.net/techtips/reading-cdecl.html

(NOT the author. It simply helped me.)

>Use typedef?

What if you're given somebody else's code and you need to understand it to put a typedef there

Welp, if it’s that bad then shrug and use a #define

(Yes, this is a joke)

The trick is to just assert equal types. Most compilers have extensions that allow you to easily compare type equality (and C23 actually standardizes the `typeof()` operator).

So you basically take your ugly type, put it in a #define and then create a static assertion that matches the type against said ugly type.

Now the compiler will throw a shit fit if the types don't match. Have fun breaking the type up into smaller pieces until you have something legible.

Function typedefs make this less confusing by removing awkward parentheses. e.g.

  typedef int read_block_fn(void *context, u8 *buf, unsigned int block, size_t len);

https://github.com/torvalds/linux/blob/0a9b9d17f3a781dea03ba...