SIGSEGV on Ubuntu 24 (g_type_check_instance_is_fundamentally)

[AdrianOltean]

Describe the bug
We (NXP) have the MCUXpresso IDE that is Eclipse (CDT) based and recently noticed that random seg faults occur when using Ubuntu 24. These occur also on Ubuntu 22 but quite rarely compared to Ubuntu 24. See the attached crash dumps and the actual configuration. Most of the crash dumps occur in: # C [libgobject-2.0.so.0+0x3cd61] g_type_check_instance_is_fundamentally_a+0x11 but we've occasionally seen # C [libcairo.so.2+0x6b0a4] cairo_region_num_rectangles+0x4 appears as well.

configuration.txt
hs_err_pid20973.log
hs_err_pid22226.log

To Reproduce
Crash occurs randomly when interacting with tree-based views.

Expected behavior
IDE must not crash.

Screenshots
N/A.

Environment:

1. Select the platform(s) on which the behavior is seen:

• • All OS
• • Windows
• • Linux
• • macOS

2. Additional OS info (e.g. OS version, Linux Desktop, etc).

• Ubuntu 24
• GTK lib v3.24.41 & v4.14.2 installed in Ubuntu 24.

3. JRE/JDK version

• OpenJDK 64-Bit Server VM Temurin-17.0.9+9

Version since
Eclipse or SWT version since when the behavior is seen [e.g. 4.23]

• Eclipse IDE v2023.12, v4.30 platform,

Workaround (or) Additional context
Forcing the use of GTK4 seems to help but maybe it's just luck, given that even usage of GTK3 triggers random seg faults...

[fedejeanne]

cc @jonahgraham since the workaround mentions that forcing GTK4 seems to help. Maybe this issue will be solved when GTK4 Full Support is finished?

[iloveeclipse]

Yo are using "unsupported" GTK3 theme: org.eclipse.swt.internal.gtk.theme=Yaru (we only support default GTK3 theme, because there are myriads of different themes for GTK3).

Have you tried whether the crashes happen on default Adwaita GTK3 theme too?

[AdrianOltean]

I can accept that I use an unsupported theme but isn't "Yaru" the default theme used in the newer Ubuntu versions? I'm not using any custom or fancy Ubuntu setup. Can I direct customers to some Eclipse-specific release notes that state what themes are officially supported on Ubuntu and how they should force a specific theme?

Regarding "Adwaita", I tried it but unfortunately it doesn't make any difference...

[iloveeclipse]

isn't "Yaru" the default theme used in the newer Ubuntu versions?

Default for Ubuntu maybe, but we are talking about GTK3 defaults, not some Linux distro defaults.

Regarding "Adwaita", I tried it but unfortunately it doesn't make any difference...

OK, so could be some Ubuntu specific GTK3 issue (I believe Ubuntu ship patched GTK3 libraries), or GTK 3.24.41 issue. Can you try to downgrade GTK3 version and check?

Beside this, Eclipse 2023 is not supported anymore. Please try latest Eclipse version.

[akurtakov]

Have you tried with latest Eclipse version?

[AdrianOltean]

Unfortunately, I can't easily try this... There are no near-term plans to switch to a newer Eclipse version for now. And it's not an easy task to update.

[akurtakov]

Unfortunately, this leaves you on your own. With the limited resources available if something is not reproducible (preferably with pure SWT snippet to do so) spending time to check smth that might already be fixed in the last years is just costing too much time that could be spend better by working on well known and reproducible problems. If you don't plan to test on latest Eclipse and/or provide a clear reproducer please close this one as it is simply non actionable.

[AdrianOltean]

I do realize that there's a minimal chance to have Eclipse 2023.12 fixed at this point, but I think that the ticket is useful for others experimenting the same issue. As for the reproducibility steps, I mentioned that the seg faults are quite random. It's enough to use MCUXpresso IDE and interact with various tree-based views.

Regarding the work associated to current ticket, I expect the owners of the project to decide what should be done with it and whether further investigation/work can be done based on the logs/dumps/information I provided.

[akurtakov]

Closing as no one verified the problem still exists on latest version and there are enough known problems to work on.

[sratz]

Since upgrading our Jenkins agents from Ubuntu 22.04 to 24.04, our test suite also regularly runs into this issue with the latest Eclipse 2025-06.

hs_err_pid2350368.log

There's also this, which looks very similar: dbeaver/dbeaver#39048

I've not been able to reproduce this locally (ideally in a debugger), yet.

Not sure whether this is a problem in application layer code, SWT, or in GTK3.

[akurtakov]

And the issue happens with latest 2025-09 release , right?