From f07fed9afac705fc37d804a0ba6e1f0d696b32ce Mon Sep 17 00:00:00 2001
From: Ilya Gorbunov <ilya.gorbunov@jetbrains.com>
Date: Thu, 7 Mar 2019 18:53:54 +0300
Subject: [PATCH] Temporary fix to avoid runtime exception due to incorrect
 inferred type

Caused by: java.lang.ClassCastException:
kotlin.collections.EmptySet cannot be cast to java.lang.Void
  at org.jetbrains.kotlin.codegen.coroutines.CoroutineTransformerMethodVisitorKt.findSafelyReachableReturns(CoroutineTransformerMethodVisitor.kt:984)

Co-authored-by: Alexander Udalov <alexander.udalov@jetbrains.com>
---
 .../codegen/coroutines/CoroutineTransformerMethodVisitor.kt     | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/compiler/backend/src/org/jetbrains/kotlin/codegen/coroutines/CoroutineTransformerMethodVisitor.kt b/compiler/backend/src/org/jetbrains/kotlin/codegen/coroutines/CoroutineTransformerMethodVisitor.kt
index 6f9c3087590..9fff96532b4 100644
--- a/compiler/backend/src/org/jetbrains/kotlin/codegen/coroutines/CoroutineTransformerMethodVisitor.kt
+++ b/compiler/backend/src/org/jetbrains/kotlin/codegen/coroutines/CoroutineTransformerMethodVisitor.kt
@@ -982,7 +982,7 @@ private fun findSafelyReachableReturns(methodNode: MethodNode, sourceFrames: Arr
         if (!insn.isMeaningful || insn.opcode in SAFE_OPCODES || insn.isInvisibleInDebugVarInsn(methodNode) ||
             isInlineMarker(insn)) {
             setOf()
-        } else null
+        } else null as Set<Int>?
     }
 
     var changed: Boolean