From c842b9bc7336338d82e638d89430bed9102ac0b4 Mon Sep 17 00:00:00 2001
From: Svyatoslav Scherbina <svyatoslav.scherbina@jetbrains.com>
Date: Fri, 3 Mar 2017 15:45:29 +0700
Subject: [PATCH] backend: preserve `.isTailrec` when lowering local functions

---
 .../kotlin/backend/common/lower/LocalDeclarationsLowering.kt | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/common/lower/LocalDeclarationsLowering.kt b/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/common/lower/LocalDeclarationsLowering.kt
index 5124ed56db2..d2c48c9499b 100644
--- a/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/common/lower/LocalDeclarationsLowering.kt
+++ b/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/common/lower/LocalDeclarationsLowering.kt
@@ -444,7 +444,10 @@ class LocalDeclarationsLowering(val context: BackendContext) : DeclarationContai
                     generateNameForLiftedDeclaration(oldDescriptor, memberOwner),
                     CallableMemberDescriptor.Kind.SYNTHESIZED,
                     oldDescriptor.source
-            )
+            ).apply {
+                isTailrec = oldDescriptor.isTailrec
+                // TODO: copy other properties or consider using `FunctionDescriptor.CopyBuilder`.
+            }
 
             localFunctionContext.transformedDescriptor = newDescriptor
             transformedDescriptors[oldDescriptor] = newDescriptor