tests/headers/disable-untagged-union.hpp - third_party/github.com/rust-lang/rust-bindgen - Git at Google

 // bindgen-flags: --disable-untagged-union

 union Foo {
   int bar;
   unsigned int baz;
 };
	// bindgen-flags: --disable-untagged-union

	union Foo {
	int bar;
	unsigned int baz;
	};