extern const array is unexpectedly mut

[bobbobbio]

Input C/C++ Header

extern const int foo[1];

Bindgen Invocation

$ bindgen input.h

Actual Results

/* automatically generated by rust-bindgen */

extern "C" {
    pub static mut foo: [::std::os::raw::c_int; 1usize];
}

Expected Results

/* automatically generated by rust-bindgen */

extern "C" {
    pub static foo: [::std::os::raw::c_int; 1usize];
}

The const from the array seems to be lost. Arrays are a bit strange in C, but as best I can tell when you put const on an array it does in fact mean that values in the array are const, and as such the binding on the Rust side should not be mut.

[emilio]

Hmm... Yeah, this looks def. wrong. Var::is_const is returning false unexpectedly. I don't think this should be very hard to track down.

[emilio]

So the clang type for this test-case is const int [1], kind: ConstantArray. But clang_isConstQualifiedType returns false for that...

[bobbobbio]

I knows its a little late, but thank you for fixing this!