From b497f39c29c0f099dcb0393b712bbabb73c8d15d Mon Sep 17 00:00:00 2001
From: Alexander Udalov <alexander.udalov@jetbrains.com>
Date: Mon, 28 Sep 2020 18:01:37 +0200
Subject: [PATCH] IR: do not try to render IrUninitializedType

This will improve exception messages in case some error happens on a
function whose return type is uninitialized, as in KT-41401.
---
 .../src/org/jetbrains/kotlin/ir/util/RenderIrElement.kt     | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/util/RenderIrElement.kt b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/util/RenderIrElement.kt
index d4ad3307ae0..f6db31a23f1 100644
--- a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/util/RenderIrElement.kt
+++ b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/util/RenderIrElement.kt
@@ -28,6 +28,7 @@ import org.jetbrains.kotlin.ir.symbols.IrSymbol
 import org.jetbrains.kotlin.ir.symbols.IrTypeAliasSymbol
 import org.jetbrains.kotlin.ir.symbols.IrVariableSymbol
 import org.jetbrains.kotlin.ir.types.*
+import org.jetbrains.kotlin.ir.types.impl.IrUninitializedType
 import org.jetbrains.kotlin.ir.visitors.IrElementVisitor
 import org.jetbrains.kotlin.renderer.DescriptorRenderer
 import org.jetbrains.kotlin.types.Variance
@@ -106,8 +107,9 @@ class RenderIrElementVisitor(private val normalizeNames: Boolean = false) : IrEl
     private inline fun <T> T.runTrimEnd(fn: T.() -> String): String =
         run(fn).trimEnd()
 
-    private fun IrType.render() =
-        "${renderTypeAnnotations(annotations)}${renderTypeInner()}"
+    private fun IrType.render(): String =
+        if (this === IrUninitializedType) "<Uninitialized>"
+        else "${renderTypeAnnotations(annotations)}${renderTypeInner()}"
 
     private fun IrType.renderTypeInner() =
         when (this) {