From 362775b6b648b27a716af7dff3963b9eb348fea8 Mon Sep 17 00:00:00 2001
From: Alexander Udalov <alexander.udalov@jetbrains.com>
Date: Fri, 20 Nov 2020 12:43:47 +0100
Subject: [PATCH] JVM IR: minor, improve exception message

---
 .../src/org/jetbrains/kotlin/backend/jvm/ir/IrUtils.kt        | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/ir/IrUtils.kt b/compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/ir/IrUtils.kt
index 36d84583e63..49bee0473a2 100644
--- a/compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/ir/IrUtils.kt
+++ b/compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/ir/IrUtils.kt
@@ -308,10 +308,10 @@ fun firstSuperMethodFromKotlin(
     override: IrSimpleFunction,
     implementation: IrSimpleFunction
 ): IrSimpleFunctionSymbol {
-    return override.overriddenSymbols.first {
+    return override.overriddenSymbols.firstOrNull {
         val owner = it.owner
         owner.modality != Modality.ABSTRACT && owner.overrides(implementation)
-    }
+    } ?: error("No super method found for: ${override.render()}")
 }
 
 // MethodSignatureMapper uses the corresponding property of a function to determine correct names