Simulation crashes with real driver station enabled

[kevinwang]

This is on WPILib alpha 5 and FirstDriverStation alpha 3 on macOS ARM and the OpMode Robot template.

When starting a simulation with Sim GUI and Use Real DriverStation checked, the simulation crashes in two ways depending on whether the driver station is already running or is started later.

If the simulation is started with the driver station already running:

HAL Extensions: Attempting to load: libhalsim_gui
Simulator GUI Initializing.
Simulator GUI Initialized!
HAL Extensions: Successfully loaded extension
HAL Extensions: Attempting to load: libhalsim_ds_socket
DriverStationSocket Initializing.
DriverStationSocket Initialized!
HAL Extensions: Successfully loaded extension
********** Robot program starting **********
NT: Listening on port 5810
NT: mDNS announcing as service 'robot' on port 5810
objc[96238]: Attempt to use unknown class 0x8bb5b1c20.
[1]    96238 abort      /usr/bin/env    /Users/kevin/wpilib/2027_alpha5/jdk/bin/java   first.Main

And when the driver station is started after the simulation is started:

HAL Extensions: Attempting to load: libhalsim_gui
Simulator GUI Initializing.
Simulator GUI Initialized!
HAL Extensions: Successfully loaded extension
HAL Extensions: Attempting to load: libhalsim_ds_socket
DriverStationSocket Initializing.
DriverStationSocket Initialized!
HAL Extensions: Successfully loaded extension
********** Robot program starting **********
NT: Listening on port 5810
NT: mDNS announcing as service 'robot' on port 5810
********** Robot program startup complete **********
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  SIGSEGV (0xb) at pc=0x0000000192165820, pid=97030, tid=259
#
# JRE version: OpenJDK Runtime Environment Temurin-25.0.2+10 (25.0.2+10) (build 25.0.2+10-LTS)
# Java VM: OpenJDK 64-Bit Server VM Temurin-25.0.2+10 (25.0.2+10-LTS, mixed mode, sharing, tiered, compressed oops, compressed class ptrs, g1 gc, bsd-aarch64)
# Problematic frame:
# C  [libobjc.A.dylib+0x9820]  objc_msgSend+0x20
#
# No core dump will be written. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again
#
# An error report file with more information is saved as:
# /Users/kevin/code/robotics/Alpha2027/hs_err_pid97030.log
[thread 68611 also had an error]
#
# 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.
#
[1]    97030 abort      /usr/bin/env    /Users/kevin/wpilib/2027_alpha5/jdk/bin/java   first.Main

[ThadHouse]

Expected issue. The real ds support has not been updated yet.

[sciencewhiz]

In the upcoming alpha 6, it shouldn't crash, but it also won't work.