[FIR] NOTHING_TO_OVERRIDE diagnostic

compiler/testData/diagnostics/tests/multimodule/duplicateSuper/sameSuperTraitDifferentBounds.fir.kt

@@ -0,0 +1,30 @@
+// fir reports NOTHING_TO_OVERRIDE because it keeps only one definition of p.Base
+// MODULE: m1
+// FILE: x.kt
+package p
+
+public interface Base {
+    public fun <T> foo(t: Array<T>) {}
+}
+
+public interface A : Base
+
+// MODULE: m2
+// FILE: x.kt
+package p
+
+public interface Base {
+    public fun <T: Base> foo(t: Array<T>) {}
+}
+
+public interface B : Base
+
+// MODULE: m3(m1, m2)
+// FILE: x.kt
+
+import p.*
+
+class Foo: A, B {
+    override fun <T> foo(t: Array<T>) {}
+    <!NOTHING_TO_OVERRIDE!>override<!> fun <T: Base> foo(t: Array<T>) {}
+}

compiler/testData/diagnostics/tests/multimodule/duplicateSuper/sameSuperTraitDifferentBounds.kt

@@ -1,4 +1,3 @@
-// FIR_IDENTICAL
 // MODULE: m1
 // FILE: x.kt
 package p
@@ -27,4 +26,4 @@ import p.*
 class Foo: A, B {
     override fun <T> foo(t: Array<T>) {}
     override fun <T: Base> foo(t: Array<T>) {}
-}
+}