define with type cast not begin generated

[hellow554]

Input C/C++ Header

#define FOO 3
#define BAR ((uint32_t)FOO)
#define BAZ ((uint32_t)5)

Bindgen Invocation

$ bindgen input.h

Actual Results

pub const FOO: u32 = 3;

Expected Results

pub const FOO: u32 = 3;
pub const BAR: u32 = 3;
pub const BAZ: u32 = 5

This seems to be related to the type cast. Not sure why the values won't be produced

[emilio]

Dupe of #316, see there for details.

There's progress on this in jethrogb/rust-cexpr#15