dear pd devs,
I have a Max object (o.luajit) which wraps Luajit that I’d like to port to Pd
but it appears that since Pd does not ship with the entitlement
"com.apple.security.cs.allow-jit” Luajit crashes when using JIT compilation.
After some debugging (with helpful AI assistance) to analyze the crash report,
I was able to isolate the issue to the JIT compiler memory allocation, and
found that Luajit crashes Pd when the JIT computation is triggered crossing
some kind of size threshold. The application is terminated with a “Code
Signature Invalid” sigkill (details pasted below) due to missing the
entitlement to run (or generate?) JIT code.
If I manually disable JIT in the lua code the crash goes away (but then of
course you loose the speed benefits of Luajit).
As an experiment, I added:
<key>com.apple.security.cs.allow-jit</key>
<true />
to the /pure-data/mac/stuff/pd.entitlements file, and built the Pd.app via
“make app”.
finally with addition of this entitlement the Luajit JIT processing works as
expected, which is great!
so, to conclude, a feature request: would it be possible to add the
com.apple.security.cs.allow-jit entitlement for the Pd Mac releases? I could
imagine this would be useful in the future for others development projects as
well.
all the best,
rama
p.s. here’s what the crash looks like:
Crashed Thread: 0 Dispatch queue: com.apple.main-thread
Exception Type: EXC_BAD_ACCESS (SIGKILL (Code Signature Invalid))
Exception Codes: UNKNOWN_0x32 at 0x0000000102793f7c
Exception Codes: 0x0000000000000032, 0x0000000102793f7c
Termination Reason: Namespace CODESIGNING, Code 2 Invalid Page
p.p.s. in case it it helpful for reference, here are the Max.app entitlements
which includes the allow-jit key.
codesign -d --entitlements - /Applications/Max.app
Executable=/Applications/Max.app/Contents/MacOS/Max
[Dict]
[Key] com.apple.security.automation.apple-events
[Value]
[Bool] true
[Key] com.apple.security.cs.allow-jit
[Value]
[Bool] true
[Key] com.apple.security.cs.allow-unsigned-executable-memory
[Value]
[Bool] true
[Key] com.apple.security.cs.disable-library-validation
[Value]
[Bool] true
[Key] com.apple.security.device.audio-input
[Value]
[Bool] true
[Key] com.apple.security.device.camera
[Value]
[Bool] true
[Key] com.apple.security.get-task-allow
[Value]
[Bool] true
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