From e147993ff22e57fbc5e5d490c6c16014ad3fa31e Mon Sep 17 00:00:00 2001
From: Sergey Bogolepov <sergey.bogolepov@jetbrains.com>
Date: Fri, 28 Feb 2020 16:39:33 +0700
Subject: [PATCH] Avoid IR node duplication when lowering interop constant
 access

---
 .../kotlin/backend/konan/lower/InteropLowering.kt         | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/lower/InteropLowering.kt b/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/lower/InteropLowering.kt
index 29fa257f2b4..96367d6aaeb 100644
--- a/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/lower/InteropLowering.kt
+++ b/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/lower/InteropLowering.kt
@@ -899,10 +899,14 @@ private class InteropTransformer(val context: Context, override val irFile: IrFi
                 ?.takeIf { it.isConst }
                 ?: return null
 
-        return constantProperty.backingField
+        val irConstant = (constantProperty.backingField
                 ?.initializer
                 ?.expression
-                ?: error("Constant property ${constantProperty.name} has no initializer!")
+                ?: error("Constant property ${constantProperty.name} has no initializer!"))
+                as IrConst<*>
+
+        // Avoid node duplication
+        return irConstant.copy()
     }
 
     override fun visitCall(expression: IrCall): IrExpression {