From 8344605e413609b7501b0445e9792a1fb718e9e8 Mon Sep 17 00:00:00 2001
From: Tagir Valeev <tagir.valeev@jetbrains.com>
Date: Wed, 21 May 2025 15:58:00 +0200
Subject: [PATCH] [java-psi] LambdaUtil.getFunctionalInterfaceType: force
 returning null type for variables with inferred type

Otherwise, we may have a chicken-egg problem, when the inferred type is computed using its initializer and the initializer type is computed using the variable type which is not computed yet
Fixes IDEA-371650 [Java] test problem com.intellij.java.codeInsight.daemon.LightAdvLVTIHighlightingTest.testSimpleAvailability: Non-idempotent computation

GitOrigin-RevId: 69f4608ea9ba6ce98cda8c02acdc51134d4c5552
---
 java/java-psi-api/src/com/intellij/psi/LambdaUtil.java        | 4 +++-
 .../java/codeInsight/daemon/LightAdvLVTIHighlightingTest.java | 2 --
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/java/java-psi-api/src/com/intellij/psi/LambdaUtil.java b/java/java-psi-api/src/com/intellij/psi/LambdaUtil.java
index 8c6c2f03deb5..c9f9f7817c4c 100644
--- a/java/java-psi-api/src/com/intellij/psi/LambdaUtil.java
+++ b/java/java-psi-api/src/com/intellij/psi/LambdaUtil.java
@@ -390,7 +390,9 @@ public final class LambdaUtil {
       return castType;
     }
     else if (parent instanceof PsiVariable) {
-      return ((PsiVariable)parent).getType();
+      PsiVariable variable = (PsiVariable)parent;
+      PsiTypeElement typeElement = variable.getTypeElement();
+      return typeElement != null && typeElement.isInferredType() ? null : variable.getType();
     }
     else if (parent instanceof PsiAssignmentExpression && expression instanceof PsiExpression && !PsiUtil.isOnAssignmentLeftHand((PsiExpression)expression)) {
       final PsiExpression lExpression = ((PsiAssignmentExpression)parent).getLExpression();
diff --git a/java/java-tests/testSrc/com/intellij/java/codeInsight/daemon/LightAdvLVTIHighlightingTest.java b/java/java-tests/testSrc/com/intellij/java/codeInsight/daemon/LightAdvLVTIHighlightingTest.java
index f74821ec8ec0..f8e974651cdd 100644
--- a/java/java-tests/testSrc/com/intellij/java/codeInsight/daemon/LightAdvLVTIHighlightingTest.java
+++ b/java/java-tests/testSrc/com/intellij/java/codeInsight/daemon/LightAdvLVTIHighlightingTest.java
@@ -8,7 +8,6 @@ import com.intellij.codeInspection.AnonymousCanBeLambdaInspection;
 import com.intellij.codeInspection.redundantCast.RedundantCastInspection;
 import com.intellij.openapi.projectRoots.JavaSdkVersion;
 import com.intellij.openapi.projectRoots.Sdk;
-import com.intellij.openapi.util.RecursionManager;
 import com.intellij.pom.java.LanguageLevel;
 import com.intellij.psi.CommonClassNames;
 import com.intellij.psi.PsiClass;
@@ -43,7 +42,6 @@ public class LightAdvLVTIHighlightingTest extends LightDaemonAnalyzerTestCase {
   }
 
   public void testSimpleAvailability() {
-    RecursionManager.disableMissedCacheAssertions(getTestRootDisposable());
     doTest();
   }