From dc33d1842543ad22842a62bbd9bb300a79f1ff4a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Herv=C3=A9=20Boutemy?= <hboutemy@apache.org>
Date: Mon, 8 Aug 2022 23:07:21 +0200
Subject: [PATCH] ensure reproducible elements order by sorting
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Signed-off-by: Hervé Boutemy <hboutemy@apache.org>
---
 tool/src/main/antlr3/org/antlr/grammar/v3/CodeGenTreeWalker.g | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tool/src/main/antlr3/org/antlr/grammar/v3/CodeGenTreeWalker.g b/tool/src/main/antlr3/org/antlr/grammar/v3/CodeGenTreeWalker.g
index 9c107b531..aa9aa835e 100644
--- a/tool/src/main/antlr3/org/antlr/grammar/v3/CodeGenTreeWalker.g
+++ b/tool/src/main/antlr3/org/antlr/grammar/v3/CodeGenTreeWalker.g
@@ -56,6 +56,7 @@ import org.antlr.codegen.*;
 import java.util.HashSet;
 import java.util.Set;
 import java.util.Collection;
+import java.util.Collections;
 import org.antlr.runtime.BitSet;
 import org.antlr.runtime.DFA;
 import org.stringtemplate.v4.ST;
@@ -284,6 +285,7 @@ protected final List<String> getTokenTypesAsTargetLabels(Collection<GrammarAST>
         }
         labels.add( label );
     }
+	Collections.sort(labels); // ensure reproducible order
     return labels;
 }