Created attachment 83008 [details] A simple patch that fixed the issue. After segmentation faults in inkscape and rsvg_convert, the backtrace points to strlen called from write_used_glyphs in cairo. Please see https://bugzilla.redhat.com/show_bug.cgi?id=957009 for the bug reported to Fedora. In some cases _cairo_winansi_to_glyphname can return null, so write_used_glyphs should check that. Attached a naive patch that fixed the problem. Regards.
> In some cases _cairo_winansi_to_glyphname can return null, so > write_used_glyphs should check that. > > Attached a naive patch that fixed the problem. After figuring out why _cairo_winansi_to_glyphname was returning NULL it turns out your naive patch is the correct fix. I've pushed out a reformatted and commented version of the patch. http://cgit.freedesktop.org/cairo/commit/?id=274863be08f6c8df6d411df9db725d34f7fbabea
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