From 03acb49b5a617e4f44e733c7645c276cd4e01ced Mon Sep 17 00:00:00 2001
From: peter <peter@jetbrains.com>
Date: Fri, 5 Apr 2019 10:01:26 +0200
Subject: [PATCH] guard against DDOSing
 PsiElementFactory#createTypeByFQClassName with many expensive file scopes
 (IDEA-210047)

`fileScope(LightVirtualFile)` can hold hard reference to PSI and AST, and the memory snapshot contains many of those
---
 .../src/com/intellij/psi/impl/PsiElementFactoryImpl.java        | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/java/java-psi-impl/src/com/intellij/psi/impl/PsiElementFactoryImpl.java b/java/java-psi-impl/src/com/intellij/psi/impl/PsiElementFactoryImpl.java
index 704698726be8..7929db4c31cf 100644
--- a/java/java-psi-impl/src/com/intellij/psi/impl/PsiElementFactoryImpl.java
+++ b/java/java-psi-impl/src/com/intellij/psi/impl/PsiElementFactoryImpl.java
@@ -35,7 +35,7 @@ import java.util.concurrent.ConcurrentMap;
 
 public class PsiElementFactoryImpl extends PsiJavaParserFacadeImpl implements PsiElementFactory {
   private final ConcurrentMap<LanguageLevel, PsiClass> myArrayClasses = ContainerUtil.newConcurrentMap();
-  private final ConcurrentMap<GlobalSearchScope, PsiClassType> myCachedObjectType = ContainerUtil.newConcurrentMap();
+  private final ConcurrentMap<GlobalSearchScope, PsiClassType> myCachedObjectType = ContainerUtil.createConcurrentSoftMap();
 
   public PsiElementFactoryImpl(final PsiManagerEx manager) {
     super(manager);