From 68732032e04f0f7f811cfadd1e98b5e7ee46845f Mon Sep 17 00:00:00 2001
From: Sam Harwell <sam@tunnelvisionlabs.com>
Date: Sat, 23 Feb 2013 23:16:47 -0600
Subject: [PATCH] Interlocked.Increment returns the incremented value, not the
 original value

---
 runtime/CSharp/Antlr4.Runtime/Dfa/DFA.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/runtime/CSharp/Antlr4.Runtime/Dfa/DFA.cs b/runtime/CSharp/Antlr4.Runtime/Dfa/DFA.cs
index a26a1f3f0..45112db85 100644
--- a/runtime/CSharp/Antlr4.Runtime/Dfa/DFA.cs
+++ b/runtime/CSharp/Antlr4.Runtime/Dfa/DFA.cs
@@ -98,7 +98,7 @@ namespace Antlr4.Runtime.Dfa
 
         public virtual DFAState AddState(DFAState state)
         {
-            state.stateNumber = Interlocked.Increment(ref nextStateNumber);
+            state.stateNumber = Interlocked.Increment(ref nextStateNumber) - 1;
             return states.GetOrAdd(state, state);
         }