From 36a6c0881c199b6d1ed72773ea76b8daa4c56ef2 Mon Sep 17 00:00:00 2001
From: Nikolay Krasko <nikolay.krasko@jetbrains.com>
Date: Mon, 24 Dec 2018 21:43:56 +0300
Subject: [PATCH] Check file is valid before executing `toPsiFile` (EA-133882)

---
 .../highlighter/KotlinDefaultHighlightingSettingsProvider.kt  | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/idea/src/org/jetbrains/kotlin/idea/highlighter/KotlinDefaultHighlightingSettingsProvider.kt b/idea/src/org/jetbrains/kotlin/idea/highlighter/KotlinDefaultHighlightingSettingsProvider.kt
index 75aeaaec016..8707dcfb56d 100644
--- a/idea/src/org/jetbrains/kotlin/idea/highlighter/KotlinDefaultHighlightingSettingsProvider.kt
+++ b/idea/src/org/jetbrains/kotlin/idea/highlighter/KotlinDefaultHighlightingSettingsProvider.kt
@@ -16,6 +16,10 @@ import org.jetbrains.kotlin.psi.KtFile
 
 class KotlinDefaultHighlightingSettingsProvider : DefaultHighlightingSettingProvider() {
     override fun getDefaultSetting(project: Project, file: VirtualFile): FileHighlightingSetting? {
+        if (!file.isValid) {
+            return null
+        }
+
         return when {
             file.toPsiFile(project) !is KtFile -> null
             ProjectRootsUtil.isLibraryFile(project, file) -> FileHighlightingSetting.SKIP_INSPECTION