[GTK4] crashes when creating and closing many shells #2589
Description
While trying to test the clipboard (#2126) on a loop I found GTK4 crashed quite consistently, so I extracted the minimum test that fails to see if this problem is my machine only - which is an Ubuntu 25.04 setup.
This is what happens when I run it from my Eclipse dev:
#
# A fatal error has been detected by the Java Runtime Environment:
#
# SIGSEGV (0xb) at pc=0x0000732c1d859313, pid=466736, tid=466743
#
# JRE version: OpenJDK Runtime Environment Temurin-21.0.5+11 (21.0.5+11) (build 21.0.5+11-LTS)
# Java VM: OpenJDK 64-Bit Server VM Temurin-21.0.5+11 (21.0.5+11-LTS, mixed mode, sharing, tiered, compressed oops, compressed class ptrs, g1 gc, linux-amd64)
# Problematic frame:
# C [libgtk-4.so.1+0x659313]
#
# Core dump will be written. Default location: Core dumps may be processed with "/usr/share/apport/apport -p%p -s%s -c%c -d%d -P%P -u%u -g%g -F%F -- %E" (or dumping to /scratch/eclipse/oomph/swt-master/git/eclipse.platform.swt/tests/org.eclipse.swt.tests/core.466736)
#
# An error report file with more information is saved as:
# /scratch/eclipse/oomph/swt-master/git/eclipse.platform.swt/tests/org.eclipse.swt.tests/hs_err_pid466736.log
[5.351s][warning][os] Loading hsdis library failed
#
# If you would like to submit a bug report, please visit:
# https://github.com/adoptium/adoptium-support/issues
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
I provided the test that normally crashes as above on around 70-80 shell creations in #2587
With Ubuntu 25.10 due out within a week, I will retest on that OS when available and leave this on the back burner (but as FYI for others) until then.
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