2 files changed, 42 insertions, 0 deletions
diff --git a/src/test/ui-fulldeps/internal-lints/bad_opt_access.rs b/src/test/ui-fulldeps/internal-lints/bad_opt_access.rs
new file mode 100644
index 00000000000..d6bd6945e15
--- /dev/null
+++ b/src/test/ui-fulldeps/internal-lints/bad_opt_access.rs
@@ -0,0 +1,22 @@
+// compile-flags: -Z unstable-options
+
+// Test that accessing command line options by field access triggers a lint for those fields
+// that have wrapper functions which should be used.
+
+#![crate_type = "lib"]
+#![feature(rustc_private)]
+#![deny(rustc::bad_opt_access)]
+
+extern crate rustc_session;
+use rustc_session::Session;
+
+pub fn access_bad_option(sess: Session) {
+    let _ = sess.opts.cg.split_debuginfo;
+    //~^ ERROR use `Session::split_debuginfo` instead of this field
+
+    let _ = sess.opts.crate_types;
+    //~^ ERROR use `Session::crate_types` instead of this field
+
+    let _ = sess.opts.crate_name;
+    // okay!
+}
diff --git a/src/test/ui-fulldeps/internal-lints/bad_opt_access.stderr b/src/test/ui-fulldeps/internal-lints/bad_opt_access.stderr
new file mode 100644
index 00000000000..e4145bff8be
--- /dev/null
+++ b/src/test/ui-fulldeps/internal-lints/bad_opt_access.stderr
@@ -0,0 +1,20 @@
+error: use `Session::split_debuginfo` instead of this field
+  --> $DIR/bad_opt_access.rs:14:13
+   |
+LL |     let _ = sess.opts.cg.split_debuginfo;
+   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+note: the lint level is defined here
+  --> $DIR/bad_opt_access.rs:8:9
+   |
+LL | #![deny(rustc::bad_opt_access)]
+   |         ^^^^^^^^^^^^^^^^^^^^^
+
+error: use `Session::crate_types` instead of this field
+  --> $DIR/bad_opt_access.rs:17:13
+   |
+LL |     let _ = sess.opts.crate_types;
+   |             ^^^^^^^^^^^^^^^^^^^^^
+
+error: aborting due to 2 previous errors
+