[antlr-interest] Known bug for antlr v3.2?

[loic.lefevre at bnpparibas.com]

Hello,
while testing some gated semantic predicate:

address
@init{int n=1;}:
        ( {n<=12}?=> c=CHAR {n++;} )+
        {
            // check for address validity
            final String t = $address.text;
            if( t.length() != 12 ) {
                throw new InvalidSWIFTBlock1AddressException( t, 
$c.getLine(), $c.getCharPositionInLine() );
            }
        }
        ;
        catch[MismatchedTokenException mte] { throw new 
InvalidSWIFTBlock1AddressException( mte.token.getText(), mte.line, 
mte.charPositionInLine ); }


I encoutered problem after Java source generation:

    class DFA1 extends DFA {

        public DFA1(BaseRecognizer recognizer) {
            this.recognizer = recognizer;
            this.decisionNumber = 1;
            this.eot = DFA1_eot;
            this.eof = DFA1_eof;
            this.min = DFA1_min;
            this.max = DFA1_max;
            this.accept = DFA1_accept;
            this.special = DFA1_special;
            this.transition = DFA1_transition;
        }
        public String getDescription() {
            return "()+ loopback of 67:1: ({...}? =>c= CHAR )+";
        }
        public int specialStateTransition(int s, IntStream _input) throws 
NoViableAltException {
            TokenStream input = (TokenStream)_input;
                int _s = s;
            switch ( s ) {
                    case 0 : 
                        int LA1_23 = input.LA(1);

 
                        int index1_23 = input.index();
                        input.rewind();
                        s = -1;
                        if ( (LA1_23==CHAR) ) {s = 24;}

                        else if ( (LA1_23==12) && ((n<=12))) {s = 14;}

The Java compiler says:

SWIFTMTParser.java:865: cannot find
 symbol
symbol  : variable n
location: class 
com.bnpparibas.acetp.foxhound.spec2009.parser.SWIFTMTParser.DFA1
                        else if ( (LA1_23==12) && ((n<=12))) {s = 14;}


I've tried to modify something using -Xminswitchalts 100 but I don't know 
what to do to correct this issue.
Is it a known antlr bug?

Regards,
Loïc




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