RE: string token

[Xinan Tang]

Hi Hans,

   $1 will be overwritten by $2 when printf is executed. One has to copy
$1 somewhere as soon as yyval is available.

--Xinan


-----Original Message-----
From: address@hidden
[mailto:address@hidden On Behalf Of Hans
Aberg
Sent: Tuesday, December 02, 2003 11:52 AM
To: Nosnos
Cc: address@hidden
Subject: Re: string token


In your C printf statement, you use the token numbers as format strings,
and no output data, so the effect is undefined according to the C
standard.
So it is a question of writing correct C code, not a Help-Bison problem.

You might try an action like
    printf("...%s...%s...", $1, $2);
or
    printf("...%s...%s...", $1.string, $2.string);
depending on whether %union is used or not.

  Hans Aberg




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