Re: [Matplotlib-users] random crash, Pango-WARNING

[Darren D. <dd...@co...>]

On Sunday 26 February 2006 6:37 am, Steve Schmerler wrote:
> Hi
>
> With 0.87 and 0.86.2 mpl randomly crashes when executing this script:
>
> ---------------------------
> from pylab import *
> from matplotlib import verbose
>
> verbose.level = 'debug-annoying'
> ##verbose.level = 'debug'
>
> rcParams['text.usetex'] = True
> plot([1,2,3])
>
> savefig("image.eps")
> ---------------------------
>
> The crash is triggered when savefig() is called and only if
> rcParams['text.usetex'] = True. The error message is
>
>   (test.py:7258): Pango-WARNING **: Invalid UTF-8 string passed to
> pango_layout_set_text()
>
> I tried to track it down but the crash seems to occur in *different*
> code segments (calling "python test.py" several times it crashed
> sometimes after a call to dvips, sometimes dvipng, gs, ...). Sometimes
> it even *doesn't* crash at all.
>
> I have the following pango-stuff installed (Debian):
>
> elcorto@ramrod:~$ COLUMNS=200 dpkg -l | grep pango
> ii  libpango1.0-0                                1.8.1-1
>
> ii  libpango1.0-common                           1.8.1-1
>
> ii  libpango1.0-dbg                              1.8.1-1
>
> ii  libpango1.0-dev                              1.8.1-1

I can't reproduce your result with pango 1.10.3 installed on a gentoo system 
with python-2.4.2. Does the script crash if you set verbose.level=silent? It 
looks like one of the stdout or stderr messages from dvips/gs/dvipng is 
returning unicode, in which case you could try to convert them to strings 
before passing them to verbose.report. Just a guess.