From 3e054df98b9e8f0e154e0a1b886c7947e5c00e88 Mon Sep 17 00:00:00 2001
From: Sam Harwell <sam@tunnelvisionlabs.com>
Date: Sun, 23 Mar 2014 16:31:14 -0500
Subject: [PATCH] Do not process grammars following an error during parsing
 (fixes #507)

---
 tool/src/org/antlr/v4/Tool.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tool/src/org/antlr/v4/Tool.java b/tool/src/org/antlr/v4/Tool.java
index cf70d0937..3ef1f3a3b 100644
--- a/tool/src/org/antlr/v4/Tool.java
+++ b/tool/src/org/antlr/v4/Tool.java
@@ -339,7 +339,7 @@ public class Tool {
 				System.out.println(dep.getDependencies().render());
 
 			}
-			else {
+			else if (errMgr.getNumErrors() == 0) {
 				process(g, true);
 			}
 		}