[Freewx-maint] Bug#702378: libwxgtk2.8-0: segv printing postscript in a latin-1 locale

[Olly Betts]

On Wed, Mar 06, 2013 at 07:35:26AM +1100, Kevin Ryde wrote:
> gdb claims it to be in wxPostScriptDC::DoGetTextExtent() dcpsg.cpp line
> 2151 and has p==NULL.  If my sources are up-to-date that line would be
> 
>     for(p=(unsigned char *)wxMBSTRINGCAST strbuf; *p; p++)
> 
> Maybe it's something locale related.  If I make a utf8 and switch to it
> like LC_ALL=en_US.UTF-8 then the print works.  In that case it warns too
> that I don't have file /usr/share/wx/gs_afm/Helv.afm, if that makes a
> difference.
> 
> Is that p strbuf thing a conversion to a locale string to measure the
> characters or something?  Dunno what it should do if the locale is not
> enough for the string to be printed, but you'd hope it didn't crash.

I forwarded the bug upstream, who suggested just returning in this case,
and I came up with the attached patch which implements that.

My unstable chroot seems to have got in an odd state, so I haven't tried
building it yet, but if you have the setup to hand to reproduce the issue,
please give it a go and let me know if it fixes it.

Cheers,
    Olly
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