If the memory for Sequencer is being allocated by Csound the constructor for the "score" field will not be called. In your Sequencer_init function you can call the in-place constructor to initialize the "score" field like this:

int Sequencer_init(CSOUND *csound, Sequencer *self)

{

    new (&self->score) multimap<string, int>();

    self->score.insert(pair<string, int>("Stuff",369));

    return OK;

}

You will also have to do something to call the destructor as well.

Regards,

Mike

-----------------------------------------------------

Michael Gogins
Irreducible Productions
http://michaelgogins.tumblr.com
Michael dot Gogins at gmail dot com

On Wed, Jun 29, 2016 at 11:17 AM, Ed Costello <phasereset@gmail.com> wrote:

Hi,

I'm trying to use the STL multimap object in a Csound opcode. I have added the object to a struct but when I attempt to use the insert method in any of the Csound init or process functions I get a bad access error.

Does anyone know why this may be the case?

Below is what my code looks like, the Sequencer_init function is called when the opcode initialises, I get an error when I try to insert there.

typedef struct Sequencer

{

    OPDS h;

    MYFLT *output;

    MYFLT *flag;

    MYFLT *scoreString;

   

    multimap<string, int> score;

    

} Sequencer;

int Sequencer_init(CSOUND *csound, Sequencer *self)

{

    self->score.insert(pair<string, int>("Stuff",369));

    return OK;

}

Thanks

Ed

--

Edward Costello