From 7bbe1ba8c2d47c4dc565dd43eaff3cc15689addb Mon Sep 17 00:00:00 2001
From: Vladimir Dolzhenko <vladimir.dolzhenko@jetbrains.com>
Date: Tue, 14 Apr 2020 10:15:37 +0200
Subject: [PATCH] Improve error reporting on KotlinSliceUsage#copy

Relates to #EA-231211
---
 idea/src/org/jetbrains/kotlin/idea/slicer/KotlinSliceUsage.kt | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/idea/src/org/jetbrains/kotlin/idea/slicer/KotlinSliceUsage.kt b/idea/src/org/jetbrains/kotlin/idea/slicer/KotlinSliceUsage.kt
index 62751c645d0..26922a1cbfe 100644
--- a/idea/src/org/jetbrains/kotlin/idea/slicer/KotlinSliceUsage.kt
+++ b/idea/src/org/jetbrains/kotlin/idea/slicer/KotlinSliceUsage.kt
@@ -82,14 +82,14 @@ open class KotlinSliceUsage : SliceUsage {
         val usageInfo = getUsageInfo()
         val range = usageInfo.navigationRange ?: return
         SelectInEditorManager.getInstance(getUsageInfo().project).selectInEditor(file, range.startOffset, range.endOffset, false, false)
-        
+
         if (usageInfo.navigationOffset != range.startOffset) {
             openTextEditor(false) // to position the caret at the identifier
         }
     }
 
     override fun copy(): KotlinSliceUsage {
-        val element = getUsageInfo().element!!
+        val element = getUsageInfo().element ?: error("No more valid usageInfo.element")
         return if (parent == null)
             KotlinSliceUsage(element, params)
         else