Re: Error with grammar arguments

[Rob Casey]

Yes - That is correct Chris. I am allocating memory within Flex for tokens.
This issue first manifest itself when I started to add code for the proper
freeing on this memory (where no longer required) within grammar actions.

On Wed, 19 Dec. 2018, 04:40 Chris verBurg <address@hidden wrote:

> 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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>>
>