On Wed, Mar 19, 2008 at 9:51 PM, Hazen Babcock <[EMAIL PROTECTED]> wrote: > Agreed, but the segfault occurs because I did not think to check the > return value of the function pango_cairo_create_layout(). It should > return a pointer to a PangoLayout, but when it fails, as it does in > our test case, it returns NULL. The program crashes when this null > pointer is passed to the next function which expects a valid > PangoLayout pointer. I can add a test for this and the program will > no longer segfault, but this does not solve the problem of why > pango_cairo_create_layout() is failing in the first place. Presumably > it is trying to tell us something with the message: > > (process:10860): GLib-GObject-WARNING **: cannot register existing > type `PangoCairoFcFontMap' > > Or maybe this could just mean that at some other point we are > overwriting some crucial bit of memory?
This error does not occur on my Fedora 9 64bit installation, using the latest PLplot from Subversion. It does still occur on my Ubuntu Hardy 64bit install though. Ubuntu library versions: Cairo 1.6.0 Pango 1.20.5 Fedora library versions: Cairo 1.6.4 Pango 1.20.1 The library versions are similar, if not the same, between the two distributions. I have not used either Pango or Cairo directly, but I would be happy to do some testing here if you have any suggestions about what might help diagnose this problem. Hez -- Hezekiah M. Carty Graduate Research Assistant University of Maryland Department of Atmospheric and Oceanic Science ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Plplot-devel mailing list Plplot-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/plplot-devel
