Mogwai crashes in Ubuntu File Dialog

[saadam1n]

I get this issue whenever I navigate to any directory when a file dialog opens. Here's the terminal output:

(Mogwai:9052): Gtk-WARNING **: 19:42:46.174: Could not load a pixbuf from icon theme.
This may indicate that pixbuf loaders or the mime database could not be found.
**
Gtk:ERROR:../../../../gtk/gtkiconhelper.c:494:ensure_surface_for_gicon: assertion failed (error == NULL): Failed to load /usr/share/icons/Yaru/16x16/status/image-missing.png: Fatal error reading PNG image file: Invalid IHDR data (gdk-pixbuf-error-quark, 0)
Bail out! Gtk:ERROR:../../../../gtk/gtkiconhelper.c:494:ensure_surface_for_gicon: assertion failed (error == NULL): Failed to load /usr/share/icons/Yaru/16x16/status/image-missing.png: Fatal error reading PNG image file: Invalid IHDR data (gdk-pixbuf-error-quark, 0)

It appears that the file dialog tries loading icons from the custom theme I am using (Yaru) and crashes when it does not find image-missing.png (kind of ironic, if you ask me). However, I also tested this on Adwaita (the default icon theme) and I still go the same crash:

(Mogwai:10876): Gtk-WARNING **: 19:48:40.845: Could not load a pixbuf from icon theme.
This may indicate that pixbuf loaders or the mime database could not be found.
**
Gtk:ERROR:../../../../gtk/gtkiconhelper.c:494:ensure_surface_for_gicon: assertion failed (error == NULL): Failed to load /org/gtk/libgtk/icons/16x16/status/image-missing.png: Fatal error reading PNG image file: Invalid IHDR data (gdk-pixbuf-error-quark, 0)
Bail out! Gtk:ERROR:../../../../gtk/gtkiconhelper.c:494:ensure_surface_for_gicon: assertion failed (error == NULL): Failed to load /org/gtk/libgtk/icons/16x16/status/image-missing.png: Fatal error reading PNG image file: Invalid IHDR data (gdk-pixbuf-error-quark, 0)

[zyhhncz]

I had the same problem. Did you have resolved this issue？

[saadam1n]

I think if you are using some custom themes for Ubuntu, it can't load necessary icons for the file dialog and crashes.

…

On Fri, Oct 18, 2024, 4:26 AM zyhhncz ***@***.***> wrote: I had the same problem. Did you have resolved this issue？ — Reply to this email directly, view it on GitHub <#422 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AN36IAEIYLSSRS3FP2SE3Z3Z4DA3NAVCNFSM6AAAAABQFNQ5G2VHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDIMRRHAYTKNBXGA> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[AdamYuan]

I also encountered the problem. It seems the crash happens as soon as there's a list entry with a cached file thumbnail in the dialog.
The strange thing is that I can't reproduce this crash in a minimal Gtk3 program that uses the same file dialog code. I think there might be some linking conflicts between Gtk3 and other libraries in Falcor.
As a temporary solution I replace the Gtk3 file dialog with Zenith file dialog (thanks to https://github.com/mlabbe/nativefiledialog for the Zenity-related code), and it works perfectly. Here is my fork: https://github.com/AdamYuan/Falcor.