This is a freetype bug. Fixed in http://trac.sagemath.org/ticket/18962
On Tuesday, July 28, 2015 at 10:02:54 PM UTC+2, Andrzej Giniewicz wrote:
>
> Hello again,
>
> I have fresh build of sage 6.8 that (after setting locale) passed all
> tests. Unfortunately when I tried to build my book which works with
> sage 6.7 built on same machine with same options - I'm getting
> segfault.
>
> It occurs when I try to save the plot into svg for the second time
> after using matplotlib.rc('text', usetex=True) - if I don't make
> matplotlib use TeX, saving to svg works. If I write png after setting
> use TeX, it also works. Using savefig from matplotlib also fails, also
> when using ./sage -ipython.
>
> Full output in http://pastebin.com/ZfEj7WgY including gdb.
> Log from installing matplotlib: http://pastebin.com/qFY8y8wN
>
> Machine is Arch Linux (last updated 2 years ago), gcc 4.8.0.
>
> Failing code:
>
> sage: import matplotlib
> sage: matplotlib.rc('text', usetex=True)
> sage: plot(sin).save('test.svg') # works
> sage: plot(sin).save('test.svg') # segfault
>
> Tried with and without custom CFLAGS optimizations - same effect.
>
> Any idea what it might be? Smells like freetype, but on sage 6.7
> everything works.
>
> Thanks in advance,
> Andrzej.
>
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