All Forth really cares about is the size of the returned value. I'd expect a pointer to have type "a" (address).
On Thu, Sep 28, 2023 at 2:01 PM Mario Beaulieu via Gforth discussion and announcements <gforth@gnu.org> wrote: > Hi, > > I'm trying to use a C library to handle mqtt messages from GForth. I use > Mosquitto as a message broker (on a Raspberry Pi 3). > > The header file for mosquito can be found here: > https://mosquitto.org/api/files/mosquitto-h.html > > I get the information about GForth’s C Interface from > https://gforth.org/manual/C-Interface.html > > > At the moment, I'm struggling on the function ‘mosquitto_new’. More > precisely, my issue is that this function returns a pointer to a struct (« > Pointer to a struct mosquitto on success »), which I can't figure out how > to code. > > Here's my code: > ********* > c-library libmosquitto > > \c #include <sys/types.h> > \c #include <mosquitto.h> > > c-function mosquitto_lib_init mosquittoLibInit > -- void > c-function mosquitto_connect mosquittoConnect a a n n -- void > c-function mosquitto_subscribe mosquittoSubscribe a n a a -- void > c-function mosquitto_loop mosquittoLoop a n n -- > void > > c-function mosquitto_new mosquittoNew a n void -- "What do I put here?" > > end-c-library > ******* > > I get an « Invalid name argument » error for every type I try. > > Note that I'm not a C programmer, so I might be struggling with something > obvious. > > Any help will be appreciated > > Thank you > > Mario > > Envoyé de mon iPad -- Mark J. Reed <markjr...@gmail.com>
