Generative constructors in the new dart backend.

tests/language/language_dart2js.status

Index: tests/language/language_dart2js.status
diff --git a/tests/language/language_dart2js.status b/tests/language/language_dart2js.status
index 0477eb306cfd83645a891b85919de1f161b99c13..5ee3135a775903a2bb08c3887bd4db8d16b1bce9 100644
--- a/tests/language/language_dart2js.status
+++ b/tests/language/language_dart2js.status
@@ -186,6 +186,11 @@ stack_overflow_stacktrace_test: Fail
 closure_call_wrong_argument_count_negative_test: Skip
 label_test: Skip
 
+[ $compiler == dart2dart && $builder_tag == new_backend && $minified == true ]
+# This test fails in minified, because the type-argument is
+# renamed, but the symbol naming it it is not.
+type_variable_conflict2_test/01: RuntimeError # Issue 16180
+
 [ $compiler == dart2dart && $builder_tag == new_backend && $minified == false ]
 # This test happens not to fail in minified, because the type-argument is
 # renamed, but the unresolved reference to it is not.