it doesn't matter what LL is. `pointer( [ anything ] )` will occasionally cause segfaults or data corruption, because `[ anything ]` is more complicated than just a variable name
On Sat Feb 21 2015 at 2:51:46 PM J Luis <[email protected]> wrote: > LL is a linked list returned by C (thanks for your other pointer about > linked lists) > > LL = GMT_Create_Options(API, 0, r); > > sábado, 21 de Fevereiro de 2015 às 19:11:37 UTC, Jameson escreveu: >> >> Note that in your code `pointer([LL])` will occasionally cause a >> segfault. The argument to `pointer` must be simply a variable name, not an >> expression. >> > (i'm working a PR to eliminate the need for `pointer`, since I believe >> that it is hard to use correctly: https://github.com/JuliaLang/ >> julia/blob/jn/ccall3/doc/manual/calling-c-and-fortran- >> code.rst#passing-pointers-for-modifying-inputs) >> > >> On Sat Feb 21 2015 at 1:29:58 PM J Luis <[email protected]> wrote: >> >>> Thanks. That was exactly it. >>> >>> sábado, 21 de Fevereiro de 2015 às 18:20:05 UTC, Steven G. Johnson >>> escreveu: >>> >>>> Make sure GMT.GMT_RESOURCE is declared as an immutable type if you want >>>> Array{GMT.GMT_RESOURCE} to correspond to the memory layout of an array of C >>>> structs. >>>> >>>
