1 files changed, 28 insertions, 0 deletions
diff --git a/tests/diagnostics/interfaces/interface-override.slang b/tests/diagnostics/interfaces/interface-override.slang
new file mode 100644
index 000000000..12539895b
--- /dev/null
+++ b/tests/diagnostics/interfaces/interface-override.slang
@@ -0,0 +1,28 @@
+//DIAGNOSTIC_TEST:SIMPLE(filecheck=CHECK):
+
+interface IBase
+{
+    int f();
+}
+
+interface IDerived : IBase
+{
+    //CHECK-DAG: ([[# @LINE+1]]): error 30311:
+    __init() {}
+
+    property int value{
+        get;
+
+        //CHECK-DAG: ([[# @LINE+1]]): error 30311:
+        set{ }
+    }
+
+    __subscript(int index)->int
+    {
+        //CHECK-DAG: ([[# @LINE+1]]): error 30311:
+        get{}
+    }
+
+    //CHECK-DAG: ([[# @LINE+1]]): error 30312:
+    override int f() {}
+}
+\ No newline at end of file