Program: 84187
Project: 84187
Buggy source:
@Override public void parse(IParserManager pm,IToken token){
  final int type=token.type();
  if (type == BaseSymbols.CLOSE_CURLY_BRACKET) {
    this.end(pm);
    return;
  }
  if (type == Tokens.EOF) {
    this.end(pm);
    pm.report(token,"String_Node_Str");
    return;
  }
switch (this.mode) {
case OPEN_BRACKET:
{
      final IToken next=token.next();
      final IToken lambdaArrow=this.findLambdaArrow(next);
      if (lambdaArrow != null) {
        this.lambdaExpr=new LambdaExpr(lambdaArrow.raw());
        this.lambdaExpr.setValue(this.statementList=new StatementList(token));
        if (next == lambdaArrow) {
          this.mode=LAMBDA_TYPE_ARROW;
          return;
        }
        if (next.type() == BaseSymbols.OPEN_PARENTHESIS) {
          pm.skip();
          pm.pushParser(new ParameterListParser(this.lambdaExpr));
          this.mode=LAMBDA_PARAMETERS_END;
          return;
        }
        pm.pushParser(new ParameterListParser(this.lambdaExpr).withFlags(LAMBDA_ARROW_END));
        this.mode=LAMBDA_TYPE_ARROW;
        return;
      }
      this.statementList=this.closure ? new Closure(token) : new StatementList(token);
      this.mode=EXPRESSION;
      if (type != BaseSymbols.OPEN_CURLY_BRACKET) {
        pm.report(token,"String_Node_Str");
        pm.reparse();
      }
      return;
    }
case LAMBDA_PARAMETERS_END:
  this.mode=LAMBDA_TYPE_ARROW;
if (type != BaseSymbols.CLOSE_PARENTHESIS) {
  pm.report(token,"String_Node_Str");
}
return;
case LAMBDA_TYPE_ARROW:
if (type == DyvilSymbols.ARROW_RIGHT) {
pm.pushParser(LambdaOrTupleParser.returnTypeParser(this.lambdaExpr));
this.mode=LAMBDA_RETURN_ARROW;
return;
}
case LAMBDA_RETURN_ARROW:
if (type != DyvilSymbols.DOUBLE_ARROW_RIGHT) {
pm.report(token,"String_Node_Str");
return;
}
this.mode=EXPRESSION;
return;
case EXPRESSION:
if (type == BaseSymbols.SEMICOLON || type == BaseSymbols.COMMA) {
return;
}
if (ParserUtil.isIdentifier(type) && token.next().type() == BaseSymbols.COLON) {
this.label=token.nameValue();
pm.skip();
return;
}
final TokenIterator tokens=pm.getTokens();
final MemberParser parser=new MemberParser<>(this).withFlag(NO_UNINITIALIZED_VARIABLES | OPERATOR_ERROR | NO_FIELD_PROPERTIES);
final TryParserManager parserManager=new TryParserManager(DyvilSymbols.INSTANCE,tokens,pm.getMarkers());
tokens.jump(token);
if (parserManager.parse(parser,EXIT_ON_ROOT)) {
tokens.jump(tokens.lastReturned());
this.mode=SEPARATOR;
return;
}
parserManager.resetTo(token);
pm.pushParser(new ExpressionParser(this));
return;
case SEPARATOR:
this.mode=EXPRESSION;
if (type == BaseSymbols.SEMICOLON) {
return;
}
if (token.prev().type() == BaseSymbols.CLOSE_CURLY_BRACKET) {
pm.reparse();
return;
}
pm.report(token,"String_Node_Str");
}
}

Fixed version (ground truth):
@Override public void parse(IParserManager pm,IToken token){
  final int type=token.type();
  if (type == BaseSymbols.CLOSE_CURLY_BRACKET) {
    this.end(pm);
    return;
  }
  if (type == Tokens.EOF) {
    this.end(pm);
    pm.report(token,"String_Node_Str");
    return;
  }
switch (this.mode) {
case OPEN_BRACKET:
{
      final IToken next=token.next();
      final IToken lambdaArrow=this.findLambdaArrow(next);
      if (lambdaArrow != null) {
        this.lambdaExpr=new LambdaExpr(lambdaArrow.raw());
        this.lambdaExpr.setValue(this.statementList=new StatementList(token));
        if (next == lambdaArrow) {
          this.mode=LAMBDA_TYPE_ARROW;
          return;
        }
        if (next.type() == BaseSymbols.OPEN_PARENTHESIS) {
          pm.skip();
          pm.pushParser(new ParameterListParser(this.lambdaExpr));
          this.mode=LAMBDA_PARAMETERS_END;
          return;
        }
        pm.pushParser(new ParameterListParser(this.lambdaExpr).withFlags(LAMBDA_ARROW_END));
        this.mode=LAMBDA_TYPE_ARROW;
        return;
      }
      this.statementList=this.closure ? new Closure(token) : new StatementList(token);
      this.mode=EXPRESSION;
      if (type != BaseSymbols.OPEN_CURLY_BRACKET) {
        pm.report(token,"String_Node_Str");
        pm.reparse();
      }
      return;
    }
case LAMBDA_PARAMETERS_END:
  this.mode=LAMBDA_TYPE_ARROW;
if (type != BaseSymbols.CLOSE_PARENTHESIS) {
  pm.report(token,"String_Node_Str");
}
return;
case LAMBDA_TYPE_ARROW:
if (type == DyvilSymbols.ARROW_RIGHT) {
pm.pushParser(LambdaOrTupleParser.returnTypeParser(this.lambdaExpr));
this.mode=LAMBDA_RETURN_ARROW;
return;
}
case LAMBDA_RETURN_ARROW:
if (type != DyvilSymbols.DOUBLE_ARROW_RIGHT) {
pm.report(token,"String_Node_Str");
return;
}
this.mode=EXPRESSION;
return;
case EXPRESSION:
if (type == BaseSymbols.SEMICOLON || type == BaseSymbols.COMMA) {
return;
}
if (ParserUtil.isIdentifier(type) && token.next().type() == BaseSymbols.COLON) {
this.label=token.nameValue();
pm.skip();
return;
}
final TokenIterator tokens=pm.getTokens();
final MemberParser parser=new MemberParser<>(this).withFlag(NO_UNINITIALIZED_VARIABLES | OPERATOR_ERROR | NO_FIELD_PROPERTIES);
final TryParserManager parserManager=new TryParserManager(DyvilSymbols.INSTANCE,tokens);
tokens.jump(token);
if (parserManager.parse(parser,pm.getMarkers(),EXIT_ON_ROOT)) {
tokens.jump(tokens.lastReturned());
this.mode=SEPARATOR;
return;
}
parserManager.resetTo(token);
pm.pushParser(new ExpressionParser(this));
return;
case SEPARATOR:
this.mode=EXPRESSION;
if (type == BaseSymbols.SEMICOLON) {
return;
}
if (token.prev().type() == BaseSymbols.CLOSE_CURLY_BRACKET) {
pm.reparse();
return;
}
pm.report(token,"String_Node_Str");
}
}