From 9e7ddfa191cb085f961b01f00af5e0d846dbe644 Mon Sep 17 00:00:00 2001
From: Ivan Kylchik <ivan.kylchik@jetbrains.com>
Date: Mon, 19 Feb 2024 19:05:48 +0100
Subject: [PATCH] [IR] Resolve fake overrides inside `getFunctionDeclaration`
 function

#KT-64807
---
 .../src/org/jetbrains/kotlin/ir/inline/FunctionInlining.kt | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/compiler/ir/ir.inline/src/org/jetbrains/kotlin/ir/inline/FunctionInlining.kt b/compiler/ir/ir.inline/src/org/jetbrains/kotlin/ir/inline/FunctionInlining.kt
index 65ecd6abecb..cd944f2e0c9 100644
--- a/compiler/ir/ir.inline/src/org/jetbrains/kotlin/ir/inline/FunctionInlining.kt
+++ b/compiler/ir/ir.inline/src/org/jetbrains/kotlin/ir/inline/FunctionInlining.kt
@@ -41,7 +41,9 @@ import org.jetbrains.kotlin.util.OperatorNameConventions
 abstract class InlineFunctionResolver {
     open fun getFunctionDeclaration(symbol: IrFunctionSymbol): IrFunction? {
         if (shouldExcludeFunctionFromInlining(symbol)) return null
-        return symbol.owner
+
+        val owner = symbol.owner
+        return (owner as? IrSimpleFunction)?.resolveFakeOverride() ?: owner
     }
 
     protected open fun shouldExcludeFunctionFromInlining(symbol: IrFunctionSymbol): Boolean {
@@ -108,8 +110,7 @@ class FunctionInlining(
         if (!callee.needsInlining)
             return expression
 
-        val target = (callee as? IrSimpleFunction)?.resolveFakeOverride() ?: callee
-        val actualCallee = inlineFunctionResolver.getFunctionDeclaration(target.symbol)
+        val actualCallee = inlineFunctionResolver.getFunctionDeclaration(callee.symbol)
         if (actualCallee?.body == null) {
             return expression
         }