From 465d21e6c5e749804d78fc0c2bb2d233a014914a Mon Sep 17 00:00:00 2001
From: Nikolay Krasko <nikolay.krasko@jetbrains.com>
Date: Tue, 28 May 2019 15:18:46 +0300
Subject: [PATCH] Don't process invalid files in ReturnHintLinePainter
 (EA-141914)

---
 .../kotlin/idea/parameterInfo/custom/ReturnHintLinePainter.kt   | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/idea/src/org/jetbrains/kotlin/idea/parameterInfo/custom/ReturnHintLinePainter.kt b/idea/src/org/jetbrains/kotlin/idea/parameterInfo/custom/ReturnHintLinePainter.kt
index 85654ebb0c2..215e3d63883 100644
--- a/idea/src/org/jetbrains/kotlin/idea/parameterInfo/custom/ReturnHintLinePainter.kt
+++ b/idea/src/org/jetbrains/kotlin/idea/parameterInfo/custom/ReturnHintLinePainter.kt
@@ -22,6 +22,8 @@ class ReturnHintLinePainter : EditorLinePainter() {
     }
 
     override fun getLineExtensions(project: Project, file: VirtualFile, lineNumber: Int): List<LineExtensionInfo>? {
+        if (!file.isValid) return null
+
         val psiFile = PsiManager.getInstance(project).findFile(file) ?: return null
         if (psiFile.language != KotlinLanguage.INSTANCE) {
             return null