[PD-dev] libpd: divide by 0 in rtext_senditup()

[Dan Wilcox]

Digging further, looks like sys_zoomfontwidth() & sys_zoomfontheight() are returning 0 in glist_fontwith()/glist_fontheight().

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Dan Wilcox
@danomatika <https://twitter.com/danomatika>
danomatika.com <http://danomatika.com/>
robotcowboy.com <http://robotcowboy.com/>
> On Sep 24, 2016, at 11:20 AM, Dan Wilcox <danomatika at gmail.com> wrote:
> 
> I’m playing with removing the @synchronized locks in the libpd Obj-C layer since the updates to the libpd ringbuffer seem to be working now.
> 
> Long story short, I’m only running into one issue: divide by 0s in g_rtext.c rtext_senditup() when opening a file. It seems that the findx & findy computations on line 215 & 216 fails since the previous glist_fontwidth() & glist_fontheight() calls return 0. Could this be an execution order issue where removing the lock is making something happen earlier than it should?
> 
> Adding the following before the findx & findy math works as a quick fix to keep the divide by zero error:
> 
> if (fontwidth <= 0) fontwidth = 1;
> if (fontheight <= 0) fontheight = 1;
> 
> I’m wondering if there is a better way to catch this...
> 
> --------
> Dan Wilcox
> @danomatika <https://twitter.com/danomatika>
> danomatika.com <http://danomatika.com/>
> robotcowboy.com <http://robotcowboy.com/>

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