From 95aa8dc85a014aeb4deeea677423702c4d11a1b5 Mon Sep 17 00:00:00 2001
From: Dmitriy Novozhilov <dmitriy.novozhilov@jetbrains.com>
Date: Thu, 21 Jan 2021 13:00:47 +0300
Subject: [PATCH] Fix detecting of non-physical files in ClassFileFactory

---
 .../src/org/jetbrains/kotlin/codegen/ClassFileFactory.java       | 1 +
 1 file changed, 1 insertion(+)

diff --git a/compiler/backend/src/org/jetbrains/kotlin/codegen/ClassFileFactory.java b/compiler/backend/src/org/jetbrains/kotlin/codegen/ClassFileFactory.java
index b8b156c1ca2..80edfb9bf18 100644
--- a/compiler/backend/src/org/jetbrains/kotlin/codegen/ClassFileFactory.java
+++ b/compiler/backend/src/org/jetbrains/kotlin/codegen/ClassFileFactory.java
@@ -272,6 +272,7 @@ public class ClassFileFactory implements OutputFileCollection {
     private static List<File> toIoFilesIgnoringNonPhysical(@NotNull Collection<? extends PsiFile> psiFiles) {
         List<File> result = new ArrayList<>(psiFiles.size());
         for (PsiFile psiFile : psiFiles) {
+            if (psiFile == null) continue;
             VirtualFile virtualFile = psiFile.getVirtualFile();
             // We ignore non-physical files here, because this code is needed to tell the make what inputs affect which outputs
             // a non-physical file cannot be processed by make