From af0a118273a3221e2b1d5f3bb581aaa061176571 Mon Sep 17 00:00:00 2001
From: Grigorii Kirgizov <grigorii.kirgizov@jetbrains.com>
Date: Thu, 12 Mar 2020 10:57:13 +0300
Subject: [PATCH] Fix mistake introduced in 591865b9: return copy of
 invalidated tags, not ref (fixes MPSCR-50)

---
 .../mps/logic/reactor/core/internal/ConstraintsProcessing.kt    | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/reactor/Core/src/jetbrains/mps/logic/reactor/core/internal/ConstraintsProcessing.kt b/reactor/Core/src/jetbrains/mps/logic/reactor/core/internal/ConstraintsProcessing.kt
index ac71ba03..08e1c2a6 100644
--- a/reactor/Core/src/jetbrains/mps/logic/reactor/core/internal/ConstraintsProcessing.kt
+++ b/reactor/Core/src/jetbrains/mps/logic/reactor/core/internal/ConstraintsProcessing.kt
@@ -204,7 +204,7 @@ internal class ConstraintsProcessing(private var dispatchingFront: Dispatcher.Di
         return SessionTokenImpl(histView, rules, principalState, logicalState.clear())
     }
 
-    fun invalidatedRules(): Set<Any> = invalidatedRulesTags
+    fun invalidatedRules(): Set<Any> = HashSet<Any>(invalidatedRulesTags)
 
     /**
      * Called to update the state with the currently active constraint occurrence.