From 2c74a2356a82cf5197bb3965ec5335df3fa0cd49 Mon Sep 17 00:00:00 2001
From: Kirill Rakhman <kirill.rakhman@jetbrains.com>
Date: Tue, 12 Dec 2023 18:43:32 +0100
Subject: [PATCH] [FIR] Fix IOOBE in ConeTypeRenderer for bad extension
 function types

---
 .../src/org/jetbrains/kotlin/fir/renderer/ConeTypeRenderer.kt   | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/compiler/fir/cones/src/org/jetbrains/kotlin/fir/renderer/ConeTypeRenderer.kt b/compiler/fir/cones/src/org/jetbrains/kotlin/fir/renderer/ConeTypeRenderer.kt
index 4cb50199e92..46b3fa8a7d7 100644
--- a/compiler/fir/cones/src/org/jetbrains/kotlin/fir/renderer/ConeTypeRenderer.kt
+++ b/compiler/fir/cones/src/org/jetbrains/kotlin/fir/renderer/ConeTypeRenderer.kt
@@ -37,7 +37,7 @@ open class ConeTypeRenderer(
         }
         val typeArguments = type.typeArguments
         val isExtension = type.isExtensionFunctionType
-        val (receiver, otherTypeArguments) = if (isExtension && typeArguments.first() != ConeStarProjection) {
+        val (receiver, otherTypeArguments) = if (isExtension && typeArguments.size >= 2 && typeArguments.first() != ConeStarProjection) {
             typeArguments.first() to typeArguments.drop(1)
         } else {
             null to typeArguments.toList()