On Fri, Aug 6, 2010 at 5:17 AM, Sasan Forghani <sasanforgh...@gmail.com>wrote:
>
> ..
> expr : expr BL_ADDOP expr
> ...
> char bufferT[6];
> ...
> $<blIdentifier>$ = bufferT;
>
$<blIdentifier>$ is a char* isn't it? In which case this assigns it to the
temporary bufferT, which is going to get wiped out as soon as it goes out of
scope.
Maybe use strdup? "$<blIdentifier>$ = strdup(bufferT);" ?
...
> | '(' expr ')'
> {
> printf("This is the value of $<blIdentifier>$ at ( expr ): %s\n",
> $<blIdentifier>$);
>
At this point, you haven't assigned to $$.
...
> ref_name : BL_IDENTIFIER
> ...
> char varLocation[7];
> ...
> $<blIdentifier>$ = varLocation;
>
Another place where the buffer will go out of scope and wipe out $$. (strdup
again?)
Are you still a bit confused about how the $ variables work? And/or how
bison rules have associated values?
-Chris
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