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Date: Wed, 7 Jul 2021 16:32:23 +0200 (CEST)
From: Roland Lutz <rlutz AT hedmen DOT org>
To: "karl AT aspodata DOT se [via geda-user AT delorie DOT com]" <geda-user AT delorie DOT com>
Subject: Re: [geda-user] geda: cannot render fonts nor pins
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On Wed, 7 Jul 2021, karl AT aspodata DOT se [via geda-user AT delorie DOT com] wrote:
> (gdb) print contents
> $11 = 0x1000a4ea0 = {0x1000960e0, 0x100094600}

You can view the contents of the first object struct with:

   (gdb) p *(OBJECT *)contents->data


> (gdb) n
> 464         eda_renderer_draw (renderer, (OBJECT *) iter->data);
> (gdb) s
>
> (export:661): libgedacairo-CRITICAL **: 15:40:07.696: file edarenderer.c: line 585 (eda_renderer_draw_hatch): should not be reached
>
> (export:661): libgedacairo-WARNING **: 15:40:07.696: (edacairo.c:393):eda_cairo_stroke: code should not be reached
>
> (export:661): libgedacairo-WARNING **: 15:40:07.696: (edacairo.c:401):eda_cairo_stroke: code should not be reached
> 463       for (iter = (GList *) contents; iter != NULL; iter = g_list_next (iter))

For me, this works:

   (gdb) n
   464         eda_renderer_draw (renderer, (OBJECT *) iter->data);
   (gdb) s
   eda_renderer_draw (renderer=..., object=...)
       at ../../git/libgedacairo/edarenderer.c:472
   472       g_return_if_fail (EDA_IS_RENDERER(renderer));

Maybe you didn't run "make clean" before changing the CFLAGS?


> Is there some way to run this singlethreaded ?

gEDA/gaf itself isn't multithreaded.  I assume threads are used internally 
by one of the libraries.  Now that you bring it up, it could be that some 
gEDA/gaf functions are called in a non-thread-safe way, causing the 
problems you described.