RPM build fix (reverted CI changes which will need to be un-reverted or made conditional) and vendor Rust dependencies to make builds much faster in any CI system.

zeroidc/vendor/cbindgen/tests/rust/nonnull_attribute.rs

@@ -0,0 +1,55 @@
+use std::ptr::NonNull;
+
+struct Opaque;
+
+#[repr(C)]
+pub struct Pointers<T> {
+    a: NonNull<f32>,
+    b: NonNull<T>,
+    c: NonNull<Opaque>,
+    d: NonNull<NonNull<T>>,
+    e: NonNull<NonNull<f32>>,
+    f: NonNull<NonNull<Opaque>>,
+    g: Option<NonNull<T>>,
+    h: Option<NonNull<i32>>,
+    i: Option<NonNull<NonNull<i32>>>,
+    j: *const T,
+    k: *mut T,
+}
+
+#[repr(C)]
+pub struct References<'a> {
+    a: &'a Opaque,
+    b: &'a mut Opaque,
+    c: Option<&'a Opaque>,
+    d: Option<&'a mut Opaque>,
+}
+
+#[no_mangle]
+pub extern "C" fn value_arg(arg: References<'static>) {}
+
+#[no_mangle]
+pub extern "C" fn mutltiple_args(
+    arg: NonNull<i32>,
+    foo: *mut Pointers<u64>,
+    d: NonNull<NonNull<Opaque>>,
+) {
+}
+
+#[no_mangle]
+pub extern "C" fn ref_arg(arg: &Pointers<u64>) {}
+
+#[no_mangle]
+pub extern "C" fn mut_ref_arg(arg: &mut Pointers<u64>) {}
+
+#[no_mangle]
+pub extern "C" fn optional_ref_arg(arg: Option<&Pointers<u64>>) {}
+
+#[no_mangle]
+pub extern "C" fn optional_mut_ref_arg(arg: Option<&mut Pointers<u64>>) {}
+
+#[no_mangle]
+pub extern "C" fn nullable_const_ptr(arg: *const Pointers<u64>) {}
+
+#[no_mangle]
+pub extern "C" fn nullable_mut_ptr(arg: *mut Pointers<u64>) {}