On 1/22/15, Tang Tianyong tan...@gmail.com wrote:
Hi, yy_destructor function can not suppress warning about unused
%extra_argument variable.
Sure it can. Just add code to one of your destructors that references
the %extra_argument variable. It doesn't have to actually do anything
with the variable. If the variable is named xyzzy then it will
probably suffice to just say (void)xyzzy; inside one of your
destructors.
My yy_destructor function that Lemon generated
like this:
```
static void yy_destructor(
yyParser *yypParser,/* The parser */
YYCODETYPE yymajor, /* Type code for object to destroy */
YYMINORTYPE *yypminor /* The object to be destroyed */
){
COSStyleParseARG_FETCH;
switch( yymajor ){
/* Here is inserted the actions which take place when a
** terminal or non-terminal is destroyed. This can happen
** when the symbol is popped from the stack during a
** reduce or during error processing or when a parser is
** being destroyed before it is finished parsing.
**
** Note: during a reduce, the only symbols destroyed are those
** which appear on the RHS of the rule, but which are not used
** inside the C code.
*/
default: break; /* If no destructor action specified: do nothing */
}
}
```
--
*By tan...@gmail.com tan...@gmail.com*
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--
D. Richard Hipp
d...@sqlite.org
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