interface 'overrides' object: methods can declare different exceptions (IDEA-67753)

java/java-impl/src/com/intellij/codeInsight/daemon/impl/analysis/HighlightMethodUtil.java

@@ -247,6 +247,10 @@ public class HighlightMethodUtil {
       PsiMethod superMethod = superMethodSignature.getMethod();
       int index = getExtraExceptionNum(methodSignature, superMethodSignature, checkedExceptions, superSubstitutor);
       if (index != -1) {
+        if (aClass.isInterface()) {
+          final PsiClass superContainingClass = superMethod.getContainingClass();
+          if (superContainingClass != null && !superContainingClass.isInterface()) continue;
+        }
         PsiClassType exception = checkedExceptions.get(index);
         String message = JavaErrorMessages.message("overridden.method.does.not.throw",
                                                    createClashMethodMessage(method, superMethod, true),

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/advHighlighting/OverrideConflicts.java

@@ -86,3 +86,7 @@ interface Coll  {
 }
 class AbstrColl implements Coll {}
 
+interface InterfaceOverridesObject {
+    Object clone() throws java.io.IOException;
+}
+