Program: 111879
Project: 111879
Buggy source:
RexImpTable(){
  defineMethod(upperFunc,BuiltinMethod.UPPER.method,NullPolicy.STRICT);
  defineMethod(lowerFunc,BuiltinMethod.LOWER.method,NullPolicy.STRICT);
  defineMethod(initcapFunc,BuiltinMethod.INITCAP.method,NullPolicy.STRICT);
  defineMethod(substringFunc,BuiltinMethod.SUBSTRING.method,NullPolicy.STRICT);
  defineMethod(characterLengthFunc,BuiltinMethod.CHAR_LENGTH.method,NullPolicy.STRICT);
  defineMethod(charLengthFunc,BuiltinMethod.CHAR_LENGTH.method,NullPolicy.STRICT);
  defineMethod(concatOperator,BuiltinMethod.STRING_CONCAT.method,NullPolicy.STRICT);
  defineMethod(overlayFunc,BuiltinMethod.OVERLAY.method,NullPolicy.STRICT);
  defineBinary(andOperator,AndAlso,NullPolicy.AND,null);
  defineBinary(orOperator,OrElse,NullPolicy.OR,null);
  defineUnary(notOperator,Not,NullPolicy.STRICT);
  defineBinary(lessThanOperator,LessThan,NullPolicy.STRICT,"String_Node_Str");
  defineBinary(lessThanOrEqualOperator,LessThanOrEqual,NullPolicy.STRICT,"String_Node_Str");
  defineBinary(greaterThanOperator,GreaterThan,NullPolicy.STRICT,"String_Node_Str");
  defineBinary(greaterThanOrEqualOperator,GreaterThanOrEqual,NullPolicy.STRICT,"String_Node_Str");
  defineBinary(equalsOperator,Equal,NullPolicy.STRICT,"String_Node_Str");
  defineBinary(notEqualsOperator,NotEqual,NullPolicy.STRICT,"String_Node_Str");
  defineBinary(plusOperator,Add,NullPolicy.STRICT,"String_Node_Str");
  defineBinary(minusOperator,Subtract,NullPolicy.STRICT,"String_Node_Str");
  defineBinary(multiplyOperator,Multiply,NullPolicy.STRICT,"String_Node_Str");
  defineBinary(divideOperator,Divide,NullPolicy.STRICT,"String_Node_Str");
  defineUnary(prefixMinusOperator,Negate,NullPolicy.STRICT);
  defineUnary(prefixPlusOperator,UnaryPlus,NullPolicy.STRICT);
  defineMethod(modFunc,"String_Node_Str",NullPolicy.STRICT);
  defineMethod(expFunc,"String_Node_Str",NullPolicy.STRICT);
  defineMethod(powerFunc,"String_Node_Str",NullPolicy.STRICT);
  defineMethod(lnFunc,"String_Node_Str",NullPolicy.STRICT);
  map.put(isNullOperator,new IsXxxImplementor(null,false));
  map.put(isNotNullOperator,new IsXxxImplementor(null,true));
  map.put(isTrueOperator,new IsXxxImplementor(true,false));
  map.put(isNotTrueOperator,new IsXxxImplementor(true,true));
  map.put(isFalseOperator,new IsXxxImplementor(false,false));
  map.put(isNotFalseOperator,new IsXxxImplementor(false,true));
  final MethodImplementor likeImplementor=new MethodImplementor(BuiltinMethod.LIKE.method);
  defineImplementor(likeOperator,NullPolicy.STRICT,likeImplementor,false);
  defineImplementor(notLikeOperator,NullPolicy.STRICT,NotImplementor.of(likeImplementor),false);
  final MethodImplementor similarImplementor=new MethodImplementor(BuiltinMethod.SIMILAR.method);
  defineImplementor(similarOperator,NullPolicy.STRICT,similarImplementor,false);
  defineImplementor(notSimilarOperator,NullPolicy.STRICT,NotImplementor.of(similarImplementor),false);
  map.put(caseOperator,new CaseImplementor());
  defineImplementor(SqlStdOperatorTable.castFunc,NullPolicy.STRICT,new CastImplementor(),false);
  final CallImplementor value=new ValueConstructorImplementor();
  map.put(SqlStdOperatorTable.mapValueConstructor,value);
  map.put(SqlStdOperatorTable.arrayValueConstructor,value);
  map.put(SqlStdOperatorTable.itemOp,new ItemImplementor());
  aggMap.put(countOperator,new BuiltinAggregateImplementor("String_Node_Str"));
  aggMap.put(sumOperator,new BuiltinAggregateImplementor("String_Node_Str"));
  aggMap.put(minOperator,new BuiltinAggregateImplementor("String_Node_Str"));
  aggMap.put(maxOperator,new BuiltinAggregateImplementor("String_Node_Str"));
  agg2Map.put(countOperator,new CountImplementor2());
  agg2Map.put(sumOperator,new SumImplementor2());
  final MinMaxImplementor2 minMax=new MinMaxImplementor2();
  agg2Map.put(minOperator,minMax);
  agg2Map.put(maxOperator,minMax);
}

Fixed version (ground truth):
RexImpTable(){
  defineMethod(upperFunc,BuiltinMethod.UPPER.method,NullPolicy.STRICT);
  defineMethod(lowerFunc,BuiltinMethod.LOWER.method,NullPolicy.STRICT);
  defineMethod(initcapFunc,BuiltinMethod.INITCAP.method,NullPolicy.STRICT);
  defineMethod(substringFunc,BuiltinMethod.SUBSTRING.method,NullPolicy.STRICT);
  defineMethod(characterLengthFunc,BuiltinMethod.CHAR_LENGTH.method,NullPolicy.STRICT);
  defineMethod(charLengthFunc,BuiltinMethod.CHAR_LENGTH.method,NullPolicy.STRICT);
  defineMethod(concatOperator,BuiltinMethod.STRING_CONCAT.method,NullPolicy.STRICT);
  defineMethod(overlayFunc,BuiltinMethod.OVERLAY.method,NullPolicy.STRICT);
  defineBinary(andOperator,AndAlso,NullPolicy.AND,null);
  defineBinary(orOperator,OrElse,NullPolicy.OR,null);
  defineUnary(notOperator,Not,NullPolicy.NOT);
  defineBinary(lessThanOperator,LessThan,NullPolicy.STRICT,"String_Node_Str");
  defineBinary(lessThanOrEqualOperator,LessThanOrEqual,NullPolicy.STRICT,"String_Node_Str");
  defineBinary(greaterThanOperator,GreaterThan,NullPolicy.STRICT,"String_Node_Str");
  defineBinary(greaterThanOrEqualOperator,GreaterThanOrEqual,NullPolicy.STRICT,"String_Node_Str");
  defineBinary(equalsOperator,Equal,NullPolicy.STRICT,"String_Node_Str");
  defineBinary(notEqualsOperator,NotEqual,NullPolicy.STRICT,"String_Node_Str");
  defineBinary(plusOperator,Add,NullPolicy.STRICT,"String_Node_Str");
  defineBinary(minusOperator,Subtract,NullPolicy.STRICT,"String_Node_Str");
  defineBinary(multiplyOperator,Multiply,NullPolicy.STRICT,"String_Node_Str");
  defineBinary(divideOperator,Divide,NullPolicy.STRICT,"String_Node_Str");
  defineUnary(prefixMinusOperator,Negate,NullPolicy.STRICT);
  defineUnary(prefixPlusOperator,UnaryPlus,NullPolicy.STRICT);
  defineMethod(modFunc,"String_Node_Str",NullPolicy.STRICT);
  defineMethod(expFunc,"String_Node_Str",NullPolicy.STRICT);
  defineMethod(powerFunc,"String_Node_Str",NullPolicy.STRICT);
  defineMethod(lnFunc,"String_Node_Str",NullPolicy.STRICT);
  map.put(isNullOperator,new IsXxxImplementor(null,false));
  map.put(isNotNullOperator,new IsXxxImplementor(null,true));
  map.put(isTrueOperator,new IsXxxImplementor(true,false));
  map.put(isNotTrueOperator,new IsXxxImplementor(true,true));
  map.put(isFalseOperator,new IsXxxImplementor(false,false));
  map.put(isNotFalseOperator,new IsXxxImplementor(false,true));
  final MethodImplementor likeImplementor=new MethodImplementor(BuiltinMethod.LIKE.method);
  defineImplementor(likeOperator,NullPolicy.STRICT,likeImplementor,false);
  defineImplementor(notLikeOperator,NullPolicy.STRICT,NotImplementor.of(likeImplementor),false);
  final MethodImplementor similarImplementor=new MethodImplementor(BuiltinMethod.SIMILAR.method);
  defineImplementor(similarOperator,NullPolicy.STRICT,similarImplementor,false);
  defineImplementor(notSimilarOperator,NullPolicy.STRICT,NotImplementor.of(similarImplementor),false);
  map.put(caseOperator,new CaseImplementor());
  defineImplementor(SqlStdOperatorTable.castFunc,NullPolicy.STRICT,new CastImplementor(),false);
  final CallImplementor value=new ValueConstructorImplementor();
  map.put(SqlStdOperatorTable.mapValueConstructor,value);
  map.put(SqlStdOperatorTable.arrayValueConstructor,value);
  map.put(SqlStdOperatorTable.itemOp,new ItemImplementor());
  aggMap.put(countOperator,new BuiltinAggregateImplementor("String_Node_Str"));
  aggMap.put(sumOperator,new BuiltinAggregateImplementor("String_Node_Str"));
  aggMap.put(minOperator,new BuiltinAggregateImplementor("String_Node_Str"));
  aggMap.put(maxOperator,new BuiltinAggregateImplementor("String_Node_Str"));
  agg2Map.put(countOperator,new CountImplementor2());
  agg2Map.put(sumOperator,new SumImplementor2());
  final MinMaxImplementor2 minMax=new MinMaxImplementor2();
  agg2Map.put(minOperator,minMax);
  agg2Map.put(maxOperator,minMax);
}