IDEA-242422 ArrayIndexOutOfBoundsException in FunExprOccurrence

GitOrigin-RevId: d0b1b4e881c919d9e855f897452c371dd12f2a59

java/java-indexing-impl/src/com/intellij/psi/impl/java/FunExprOccurrence.java

@@ -133,7 +133,7 @@ public class FunExprOccurrence {
 
   private boolean isCompatible(ReferenceChainLink link, PsiMember member, List<? extends PsiClass> samClasses) {
     if (link.isCall) {
-      return member instanceof PsiMethod && hasCompatibleParameter((PsiMethod)member, argIndex, samClasses);
+      return member instanceof PsiMethod && argIndex >= 0 && hasCompatibleParameter((PsiMethod)member, argIndex, samClasses);
     }
     if (member instanceof PsiClass) {
       return samClasses.contains(member);

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/lambda/findUsages/InvalidCode.java

@@ -0,0 +1,12 @@
+class A {
+  {
+    bar() = () -> {};;
+  }
+
+  I bar() {}
+
+}
+
+interface I {
+  void run();
+}

java/java-tests/testSrc/com/intellij/java/codeInsight/daemon/lambda/FindFunctionalInterfaceTest.java

@@ -252,6 +252,12 @@ public class FindFunctionalInterfaceTest extends LightJavaCodeInsightFixtureTest
     assertOneElement(FunctionalExpressionSearch.search(fooClasses[1]).findAll());
   }
 
+  public void testInvalidCode() {
+    configure();
+    // whatever, but it shouldn't throw
+    assertEmpty(FunctionalExpressionSearch.search(findClass("I")).findAll());
+  }
+
   @Override
   protected String getBasePath() {
     return JavaTestUtil.getRelativeJavaTestDataPath() + "/codeInsight/daemonCodeAnalyzer/lambda/findUsages/";