Bart, Can you explain what you mean by "need to be rooted"? The jl_new_struct statement as Isaiah suggested works, why do we need the additional statements as you suggested?
On Saturday, September 10, 2016 at 3:38:27 AM UTC+8, Bart Janssens wrote: > > > > On Fri, Sep 9, 2016 at 6:44 PM Isaiah Norton <isaiah...@gmail.com > <javascript:>> wrote: > >> // construct a TestType instance >> >> jl_value_t* jl_A = >> jl_new_struct((jl_datatype_t*)jl_get_function((jl_module_t*)mod, >> "TestType"), >> jl_box_float64(A.a), >> jl_box_float64(A.b)); >> >> > The arguments to jl_new_struct need to be rooted, so you should do > something like: > jl_value_t* a = NULL; > jl_value_t* b = NULL; > JL_GC_PUSH2(a,b); > a = jl_box_float64(A.a); > b = jl_box_float64(A.b); > // use a and b in the new struct call > JL_GC_POP(); > > What is the objective here? If this is still to be used from C++, there > may be easier ways using Cxx.jl or CxxWrap.jl. > > Cheers, > > Bart >
