From 062210b54a032ec2aece9931b74b3a99e1526357 Mon Sep 17 00:00:00 2001
From: sharwell <sharwell@pixelminegames.com>
Date: Thu, 17 Nov 2011 17:00:08 -0800
Subject: [PATCH] v4: check for labels that alias a token name

[git-p4: depot-paths = "//depot/code/antlr4/main/": change = 9346]
---
 tool/src/org/antlr/v4/semantics/SymbolChecks.java | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tool/src/org/antlr/v4/semantics/SymbolChecks.java b/tool/src/org/antlr/v4/semantics/SymbolChecks.java
index 75591eb4f..fe2c91f26 100644
--- a/tool/src/org/antlr/v4/semantics/SymbolChecks.java
+++ b/tool/src/org/antlr/v4/semantics/SymbolChecks.java
@@ -57,6 +57,10 @@ public class SymbolChecks {
         this.g = g;
         this.collector = collector;
 		this.errMgr = g.tool.errMgr;
+
+        for (GrammarAST tokenId : collector.tokenIDRefs) {
+            tokenIDs.add(tokenId.getText());
+        }
         /*
         System.out.println("rules="+collector.rules);
         System.out.println("rulerefs="+collector.rulerefs);