[PD] canvas_makefilename() returns error

[Jonathan Wilkes via Pd-list]

It's hard to say without seeing the code.

Does x->x_canvas actually point to a canvas?  The error seems to be telling you it isn't.

(Consistency check errors come from the bug() function.  Generally they occur when an argument, struct, or struct field is checked for existence and fails that check.)

-Jonathan

On Sunday, June 29, 2014 9:25 PM, Jaime E Oliver <jaime.oliver2 at gmail.com> wrote:
 


Yes, 

in the main struct x_canvas is created as:

t_canvas *x_canvas;

So, I think that is not the problem.


J





On Jun 29, 2014, at 8:00 PM, Jonathan Wilkes <jancsika at yahoo.com> wrote:

Well, it expects a t_canvas *, so if you send it something else it will trigger the error.
>
>
>-Jonathan
>
>
>
>
>On Sunday, June 29, 2014 8:47 PM, Jaime E Oliver via Pd-list <pd-list at lists.iem.at> wrote:
> 
>
>
>Hi all, 
>
>I am trying to use the canvas_makefilename() function in g_canvas.c
>
>I am calling it like this: 
>
>static void lilypond_write(t_lilypond *x, t_symbol *s) {
>    char buf[MAXPDSTRING];
>    canvas_makefilename(x->x_canvas, s->s_name, buf, MAXPDSTRING);
>}
>
>but when I send the object a message such as [write test.txt( or similar, I get:
>
>error: consistency check failed: canvas_getenv
>Bus error: 10
>
>The method is set up like this:
>    class_addmethod(lilypond_class, (t_method)lilypond_write, gensym("write"), A_SYMBOL, 0);
>
>Anybody has any
 suggestion?
>
>best,
>
>J
>
>PS Sorry
 for pestering everyone with this, but there is little documentation on some of the functions in Pd. Perhaps this thread belong in the Pd-Dev list?
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