Re: [Swig-devel] g++ compile warning

[Johan H. <ha...@si...>]

Works like a charm!

Thanks!

Johan

On 09/07/2012 08:32 AM, William S Fulton wrote:
> On 27/08/12 09:01, Johan Hake wrote:
>> Hello!
>>
>> svn revision 13637 made my present compilation setup break. I use -Wall
>> -Werror for my g++ (version 4.6.3).
>>
>> It is changes introduced in the SWIG_InitilizeModule function, defined
>> in swiginit.swg, which g++ chokes on. More specific:
>>
>>    SWIG_InitializeModule(void *clientdata) {
>>    size_t i;
>>    swig_module_info *module_head, *iter;
>>    int found, init;
>>    (void *)clientdata;<---
>>
>> With the following g++ message:
>>
>>    error: statement has no effect [-Werror=unused-value]
>>
>> when removing -Werror I only get a warning and removing -Wall it is
>> again silent.
>>
>> The error is somewhat strange as the commit message for this revision
>> (13637) indicates that the revision should fix problems with
>> unused-values.
> 
> There have been a few attempts to squash warnings due to 'clientdata'
> sometimes not being used. The difficulty is it is used by some target
> languages but not others. Anyway, I think I have committed a good
> solution to this now, but it meant changing quite a few macros. Try it out.
> 
> William