Macro defining a constant with unsigned long suffix generates unsigned integer

Input C/C++ Header

#define CK_INVALID_HANDLE	(0UL)

Bindgen Invocation

bindgen::Builder::default()
    .header("input.h")
    .generate()
    .expect("Unable to generate bindings");

Actual Results

pub const CK_INVALID_HANDLE: ::std::os::raw::c_uint = 0;

Expected Results

pub const CK_INVALID_HANDLE: ::std::os::raw::c_ulong = 0;

The U (unsigned) prefix is taken into account, but not the L (long) one.
This causes types and casts problems.

Debugging logs:
bindgen.txt

The reproducer is the C/C++ header macro #define CK_INVALID_HANDLE (0UL) and the bindgen Builder invocation in the issue; begin by running that input through bindgen and tracing how the generated constant type is chosen. Done means the generated declaration uses ::std::os::raw::c_ulong while preserving the existing value.