Re: [julia-users] fieldoffsets and the C macro offsetof
Yes, but it requires confirmation that Clang.jl effectively does that and I don't have a Clang.jl at hand now (it might have been me, though the Git history that I have does not show it) sexta-feira, 11 de Setembro de 2015 às 22:01:05 UTC+1, Scott Jones escreveu: > > 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 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 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) >>> >>
Re: [julia-users] fieldoffsets and the C macro offsetof
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 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 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) >> >
Re: [julia-users] fieldoffsets and the C macro offsetof
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 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 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) >
Re: [julia-users] fieldoffsets and the C macro offsetof
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 > > 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 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) >>>
Re: [julia-users] fieldoffsets and the C macro offsetof
generally no, unless you are using C++11 features or ms-bitfields On Thu, Sep 10, 2015 at 11:01 PM J Luis 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 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) >>> >>
Re: [julia-users] fieldoffsets and the C macro offsetof
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 > > 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) >> >
Re: [julia-users] fieldoffsets and the C macro offsetof
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 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) >
[julia-users] fieldoffsets and the C macro offsetof
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)
