1 files changed, 18 insertions, 0 deletions
diff --git a/tests/ui/lint/force-warn/lint-group-allowed-lint-group.rs b/tests/ui/lint/force-warn/lint-group-allowed-lint-group.rs
new file mode 100644
index 00000000000..ee5a18c3829
--- /dev/null
+++ b/tests/ui/lint/force-warn/lint-group-allowed-lint-group.rs
@@ -0,0 +1,18 @@
+// --force-warn $LINT_GROUP causes $LINT to warn despite
+// $LINT_GROUP being allowed in module
+// compile-flags: --force-warn rust_2018_idioms
+// check-pass
+
+#![allow(rust_2018_idioms)]
+
+pub trait SomeTrait {}
+
+pub fn function(_x: Box<SomeTrait>) {}
+//~^ WARN trait objects without an explicit `dyn` are deprecated
+//~| WARN this is accepted in the current edition
+//~| WARN trait objects without an explicit `dyn` are deprecated
+//~| WARN this is accepted in the current edition
+//~| WARN trait objects without an explicit `dyn` are deprecated
+//~| WARN this is accepted in the current edition
+
+fn main() {}