gnuplot & wxWidgets(-devel): broken fonts

[mojca (Mojca Miklavec)]

I think that this worked some time ago, but I won't swear it. The wxt terminal in gnuplot doesn't show any text labels at all (it seems like broken font initialization) and if I try

set term wxt font "WhateverFont,16"

it crashes with:

(process:3664): GLib-GObject-CRITICAL **: g_object_ref: assertion `G_IS_OBJECT (object)' failed

(process:3664): GLib-GObject-CRITICAL **: g_object_get_qdata: assertion `G_IS_OBJECT (object)' failed

(process:3664): GLib-GObject-CRITICAL **: g_object_set_qdata_full: assertion `G_IS_OBJECT (object)' failed

(process:3664): Pango-CRITICAL **: void pango_fontset_foreach(PangoFontset *, PangoFontsetForeachFunc, gpointer): assertion `PANGO_IS_FONTSET (fontset)' failed

(process:3664): Pango-CRITICAL **: void pango_fontset_foreach(PangoFontset *, PangoFontsetForeachFunc, gpointer): assertion `PANGO_IS_FONTSET (fontset)' failed

(process:3664): Pango-CRITICAL **: void pango_fontset_foreach(PangoFontset *, PangoFontsetForeachFunc, gpointer): assertion `PANGO_IS_FONTSET (fontset)' failed

(process:3664): Pango-CRITICAL **: void pango_fontset_foreach(PangoFontset *, PangoFontsetForeachFunc, gpointer): assertion `PANGO_IS_FONTSET (fontset)' failed

(process:3664): Pango-CRITICAL **: void pango_fontset_foreach(PangoFontset *, PangoFontsetForeachFunc, gpointer): assertion `PANGO_IS_FONTSET (fontset)' failed

(process:3664): Pango-CRITICAL **: void pango_fontset_foreach(PangoFontset *, PangoFontsetForeachFunc, gpointer): assertion `PANGO_IS_FONTSET (fontset)' failed

(process:3664): Pango-CRITICAL **: void pango_fontset_foreach(PangoFontset *, PangoFontsetForeachFunc, gpointer): assertion `PANGO_IS_FONTSET (fontset)' failed

(process:3664): Pango-CRITICAL **: void pango_fontset_foreach(PangoFontset *, PangoFontsetForeachFunc, gpointer): assertion `PANGO_IS_FONTSET (fontset)' failed

(process:3664): Pango-CRITICAL **: void pango_fontset_foreach(PangoFontset *, PangoFontsetForeachFunc, gpointer): assertion `PANGO_IS_FONTSET (fontset)' failed

(process:3664): Pango-CRITICAL **: void pango_fontset_foreach(PangoFontset *, PangoFontsetForeachFunc, gpointer): assertion `PANGO_IS_FONTSET (fontset)' failed

(process:3664): Pango-CRITICAL **: void pango_fontset_foreach(PangoFontset *, PangoFontsetForeachFunc, gpointer): assertion `PANGO_IS_FONTSET (fontset)' failed

(process:3664): Pango-WARNING **: failed to choose a font, expect ugly output. engine-type='PangoRenderCoreText', script='common'

(process:3664): GLib-GObject-CRITICAL **: g_object_ref: assertion `G_IS_OBJECT (object)' failed

(process:3664): Pango-WARNING **: couldn't load font "Lucida Not-Rotated 320", modified variant/weight/stretch as fallback, expect ugly output.

(process:3664): GLib-GObject-CRITICAL **: g_object_ref: assertion `G_IS_OBJECT (object)' failed

(process:3664): Pango-ERROR **: Could not load fallback font, bailing out.
Trace/BPT trap: 5

I didn't fill the Port in since it is not clear to me at this point if this is gnuplot, wxWidgets or Pango issue. This happens both with wxWidgets and wxWidgets-devel. I didn't play with different versions of pango & glib2.

[ryandesign (Ryan Carsten Schmidt)]

At least some of this should now be fixed; see #37129. Please test again and let us know.

[mojca (Mojca Miklavec)]

I have some problems properly testing this at the moment. The reason: on two different macs, both running an up-to-date 10.7, up-to-date MacPorts (I didn't sync the commit you mention yet), the only difference being the Xcode version (4.3.3 vs. 4.3.2). On the one I'm working right now (Xcode 4.3.2) the wxWidgets terminal doesn't show any label at all. Just lines and graphics, no text.

[mojca (Mojca Miklavec)]

On the computer with Xcode 4.3.3 (but maybe there are other differences like a different set of flags on some ports) I don't even see that crash (and labels work) before the upgrade. So I'm in fact totally confused. I definitely volunteer to test, but I'm not sure how to do a reliable test without something reliable to compare with.

[mojca (Mojca Miklavec)]

It seems that I was the only one bitten by this and I'm not even sure how to reproduce it myself. Let's close it. If anyone else will be bitten by it, please report/reopen the report.