Use of strdup() in flex

Question

I want to send duplicate string to my bison file.

In my flex file I use it like this

    "<"     {return strdup(tOPEN);}

    ">"     {return strdup(tCLOSE);}

Is this right things to do? Or should I use it like below the code.

    "<"       { yyval. sval = strdup(yytext); return tOPEN;}

Answer 1

  "<"       { yyval. sval = strdup(yytext); return tOPEN;}

this is the right way of the using.