In the Bison 3.0.4 manual in section 3.7.6 on destructors, the example
shows:
%union { char *string; }
%token <string> STRING1 STRING2
%type <string> string1 string2
%union { char character; }
%token <character> CHR
%type <character> chr
%token TAGLESS
%destructor { } <character>
%destructor { free ($$); } <*>
%destructor { free ($$); printf ("%d", @$.first_line); } STRING1 string1
%destructor { printf ("Discarding tagless symbol.\n"); } <>
The text following the example says:
However, when the parser discards a STRING1 or a string1, it also prints
its line number to stdout. It performs only the second %destructor in this
case, so it invokes free only once.
Should the manual reference the third %destructor instead of the second? If
not, I'm confused.
Thanks,
Gary
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