From 86996bf54605680bee80e56c7612f73c1e4d28c3 Mon Sep 17 00:00:00 2001
From: Alexander Udalov <Alexander.Udalov@jetbrains.com>
Date: Wed, 18 Dec 2019 12:23:31 +0100
Subject: [PATCH] IR: workaround exceptions in IrElement.dump

Fallback to IrElement.render if exception happens in DumpIrTreeVisitor
(due, for example, to invalid IR structure).
---
 .../src/org/jetbrains/kotlin/ir/util/DumpIrTree.kt     | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/util/DumpIrTree.kt b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/util/DumpIrTree.kt
index 1906552ab33..41023af55fb 100644
--- a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/util/DumpIrTree.kt
+++ b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/util/DumpIrTree.kt
@@ -28,9 +28,13 @@ import org.jetbrains.kotlin.ir.visitors.acceptChildrenVoid
 import org.jetbrains.kotlin.utils.Printer
 
 fun IrElement.dump(normalizeNames: Boolean = false): String =
-    StringBuilder().also { sb ->
-        accept(DumpIrTreeVisitor(sb, normalizeNames), "")
-    }.toString()
+    try {
+        StringBuilder().also { sb ->
+            accept(DumpIrTreeVisitor(sb, normalizeNames), "")
+        }.toString()
+    } catch (e: Exception) {
+        "(Full dump is not available: ${e.message})\n" + render()
+    }
 
 fun IrFile.dumpTreesFromLineNumber(lineNumber: Int, normalizeNames: Boolean = false): String {
     val sb = StringBuilder()