Using vector inside a union

Hi I was using a vector inside a union. Is this legal?

Thank you,

Why do you want to do that in the first place?

To answer the strict question, any object that has a non-trivial constructor cannot be in a union, and I believe std::vector has a non-trivial constructor.

But this really seems like there's a more normal way to do whatever it is you want to do.

I am trying to write a yacc parser and was trying to debug the issue where the parser run for a long time but the output stop after a certain point. Beside this I don't know what else I should do. Below is my code. Would you please help

Code:

---

%{
  #include <stdlib.h>
  #include <stdio.h>
  #include <string.h>
  #include "defs.h"
  #include "Geom.h"
  #include "dbLayer.h"
  #include "Term.h"
  #include "Cell.h"
  #include "dbNet.h"
  #define YYMAXDEPTH 10000
  #define YYDEBUG 1
  int yylex(void);
  void yyerror(char *);
  extern int linecount;
  extern int yylex();
  extern int yyparse();
  extern FILE *yyin;
  extern FILE* yyout;
  static std::map<char*,dbNet*>NET_HASH;
  //static std::map<char*,dbNet*>::iterator NET_ITER;
  static std::map<char*,dbMacro*>MACRO_HASH;
  //static std::map<char*,dbMacro*>::iterator MACRO_ITER;
%}

%union {
  int ival;
  float fval;
  char* sval;
  int pindir;
  std::vector<char*>* charportlist;
};

---

I have no idea, and don't want to think about, whether a pointer to a vector is allowed in a union. Yacc and I are not really on speaking terms, so I can't provide debugging help; but I don't really like the looks of that union. What (if anything) is it supposed to represent?

Yeah I think I have to remove it and define it somewhere else. I am new to this yacc thing so I might do something stupid here. Anyway, thanks you guys for directing to the right direction.:)