That should be reported as a bug in Clang.jl.
size_t should is unsigned 32 or 64-bit (on today's platforms), and Cint is 
signed 32-bit, not at all the same!

On Thursday, September 10, 2015 at 11:22:13 PM UTC-4, J Luis wrote:
>
> Ok, couldn't resist to one more attempt and I may have found the issue. If 
> you look at the n_alloc member in  here
>
> https://github.com/joa-quim/GMT.jl/blob/master/src/libgmt_h.jl#L1445
>
> and here
>
>
> http://gmt.soest.hawaii.edu/projects/gmt/repository/entry/branches/5.2.0/src/gmt_resources.h#L543
>
> you'll notice that it is size_t in C an Cint in Julia (converted with 
> Clang). If I change the Julia type to Csize_t than the offsets are the same.
>
> Now I'm really going to sleep.
>
> sexta-feira, 11 de Setembro de 2015 às 04:07:53 UTC+1, J Luis escreveu:
>>
>> No, that's not the case. Pure C built with VS2013
>>
>> Ok, tomorrow I'll try to post links to code showing this case.
>>
>> sexta-feira, 11 de Setembro de 2015 às 04:03:48 UTC+1, Jameson escreveu:
>>>
>>> generally no, unless you are using C++11 features or ms-bitfields
>>>
>>> On Thu, Sep 10, 2015 at 11:01 PM J Luis <[email protected]> wrote:
>>>
>>>> Thanks, it's very late here and posting the case will take time. But 
>>>> one thing before I go.
>>>> The fact that I'm using a Julia compiled with mingw64 and accessing a 
>>>> dll built with VS could explain this, no?
>>>>
>>>>
>>>>
>>>> sexta-feira, 11 de Setembro de 2015 às 03:47:12 UTC+1, Jameson escreveu:
>>>>
>>>>> Yes (unless C doesn't have an equivalent representation), can you post 
>>>>> the case?
>>>>>
>>>>> On Thu, Sep 10, 2015 at 10:43 PM J Luis <[email protected]> wrote:
>>>>>
>>>>>> Hi,
>>>>>>
>>>>>> When we have a immutable that mimics a C struct, are the results of 
>>>>>> fieldoffsets() from the Julia side and offsetoff() at the C side 
>>>>>> supposed 
>>>>>> to give the same result?
>>>>>> (Well, I already found one case were they don't)
>>>>>>
>>>>>

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