consistent return of null for empty DFA (Coverity)

2013-08-31 17:20:00 -07:00 · 2013-08-31 17:20:00 -07:00 · d22290d44f
parent a7a2050fd2
commit d22290d44f
1 changed files with 1 additions and 0 deletions
--- a/runtime/Java/src/org/antlr/v4/runtime/dfa/DFASerializer.java
+++ b/runtime/Java/src/org/antlr/v4/runtime/dfa/DFASerializer.java
@ -67,6 +67,7 @@ public class DFASerializer {
 		}

 		String output = buf.toString();
+		if ( output.length()==0 ) return null;
 		//return Utils.sortLinesInString(output);
 		return output;
 	}