Re: [igraph] error in example igraph_cliques.c

[Vincent Wolowski]

Hello Gabor,

thanks you a lot for your insights!

Best regards,
Vincent


On Dec 2, 2007 11:06 AM, Gabor Csardi <address@hidden> wrote:
> Vincent,
>
> oh, so you're using g++, that explains it. You need explicit
> convesion when assigning void pointers to non-void pointer variables.
> Ie. instead of
>
>                    v=igraph_vector_ptr_e(&result,i);
>
> you need
>
>                    v=(igraph_vector_t*)igraph_vector_ptr_e(&result,i);
>
> Although igraph should work fine with C++, we only occasionaly check
> that, and i can't remember ever checking compiling the example
> programs with a c++ compiler. It might be worth to set up some
> testing for this... thanks,
> Gabor
>
> On Sun, Dec 02, 2007 at 10:56:58AM +0100, Vincent Wolowski wrote:
> > Hello Gabor,
> [...]
> >
> > make all
> > Building file: ../src/igraph-clique-proj.cpp
> > Invoking: GCC C++ Compiler
> > g++ -I/usr/local/include/igraph -O0 -g3 -Wall -c -fmessage-length=0
> > -MMD -MP -MF"src/igraph-clique-proj.d" -MT"src/igraph-clique-proj.d"
> > -o"src/igraph-clique-proj.o" "../src/igraph-clique-proj.cpp"
> > ../src/igraph-clique-proj.cpp: In function 'int main()':
> > ../src/igraph-clique-proj.cpp:48: warning: comparison between signed
> > and unsigned integer expressions
> > ../src/igraph-clique-proj.cpp:58: error: invalid conversion from
> > 'void*' to 'igraph_vector_t*'
> > make: *** [src/igraph-clique-proj.o] Error 1
> [...]
>
> --
>
> Csardi Gabor <address@hidden>    MTA RMKI, ELTE TTK
>
>
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