Re: Error with grammar arguments

[Chris verBurg]

Rob,

To ask a sanity question, you do strdup (or otherwise allocate fresh memory
for) yytext on the Flex side when returning tokens, yes?

-Chris


On Tue, Dec 18, 2018 at 9:15 AM Rob Casey <address@hidden> wrote:

> Hello,
>
> I have a (large) grammar where I have code similar to that below:
>
>     | identifier ':' array_spec_init {
>                 log_debug( "%p", $identifier );
>                 log_debug( "%p", $array_spec_init );
>         }
>
> When this grammar is run, the following is shown in the output:
>
> Stack now 0 1 3 15 83
> Entering state 194
> Reducing stack by rule 154 (line 2062):
>    $1 = token identifier (1.6-25: )
>    $2 = token ':' (1.27: )
>    $3 = nterm array_spec_init (1.29-56: )
> debug: *0x255b930*
> debug: *0x255b930*
>
> Note that the same pointer address is returned for $identifier and
> $array_spec_init.
>
> Before asking anyone to look at my grammar, I thought I would ask as to
> whether anyone has seen an error such as this before?
>
> Thanks in advance.
>
> Rob
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