Add undefined behaviour warning to `rustified_non_exhaustive_enum`
diff --git a/bindgen/options/mod.rs b/bindgen/options/mod.rs
index 767be03..debe16c 100644
--- a/bindgen/options/mod.rs
+++ b/bindgen/options/mod.rs
@@ -541,6 +541,11 @@
///
/// This is similar to the [`Builder::rustified_enum`] style, but the `enum` is
/// tagged with the `#[non_exhaustive]` attribute.
+ ///
+ /// **Use this with caution**, creating an instance of a Rust `enum` with an
+ /// invalid value will cause undefined behaviour, even if it's tagged with
+ /// `#[non_exhaustive]`. To avoid this, use the [`Builder::newtype_enum`] style
+ /// instead.
pub fn rustified_non_exhaustive_enum<T: AsRef<str>>(mut self, arg: T) -> Builder {
self.options.rustified_non_exhaustive_enums.insert(arg);
self
