disable test_clang_env_args on windows
diff --git a/tests/tests.rs b/tests/tests.rs
index a3e27f0..5611baa 100644
--- a/tests/tests.rs
+++ b/tests/tests.rs
@@ -410,6 +410,7 @@
 include!(concat!(env!("OUT_DIR"), "/tests.rs"));
 
 #[test]
+#[cfg_attr(target_os = "windows", ignore)]
 fn test_clang_env_args() {
     std::env::set_var(
         "BINDGEN_EXTRA_CLANG_ARGS",