Umlet crashes on macOS

[aneshodza]

I am using the newest UMLet Version (15.1) installed over Homebrew:

➜ brew install umlet
Warning: umlet 15.1 is already installed and up-to-date.
To reinstall 15.1, run:
  brew reinstall umlet

And openjdk 21:

➜ java -version

openjdk version "21" 2023-09-19
OpenJDK Runtime Environment (build 21+35-2513)
OpenJDK 64-Bit Server VM (build 21+35-2513, mixed mode, sharing)

But lately it has been crashing every time I ran the umlet command:

➜ umlet
log4j:WARN No appenders could be found for logger (com.baselet.control.enums.Program).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
2024-04-21 16:23:38.415 java[18635:11038211] WARNING: Secure coding is automatically enabled for restorable state! However, not on all supported macOS versions of this application. Opt-in to secure coding explicitly by implementing NSApplicationDelegate.applicationSupportsSecureRestorableState:.
[1]    18635 trace trap  umlet

[afdia]

Thanks for the report, it is probably this issue https://bugs.openjdk.org/browse/JDK-8318854

Unfortunately we cannot do anything except waiting for the backport of the fix in Java 21 (or you could try Java 22 which should already be fixed if I understand the issue correctly)

[aneshodza]

The issue with that approach is, that homebrew automatically ships it with openjdk 21, which is (potentially) broken:

➜ brew reinstall umlet
==> ...
==> Installing dependencies for umlet: openjdk
==> Installing umlet dependency: openjdk
==> Downloading https://ghcr.io/v2/homebrew/core/openjdk/manifests/21.0.2
Already downloaded: /Users/anes/Library/Caches/Homebrew/downloads/d437bb150fa297f0ee7f7f26594cb0a1e7aec55a45ec6570ed8660a033b7c3f9--openjdk-21.0.2.bottle_manifest.json
==> Pouring openjdk--21.0.2.arm64_sonoma.bottle.tar.gz
🍺  /opt/homebrew/Cellar/openjdk/21.0.2: 600 files, 331.2MB

There isn't a solution for this as of now I think, because the java version is broken.

Locally patching it

After a bit of trying around I figured out why it wouldn't take my local version:

➜ la /opt/homebrew/bin/umlet*
/opt/homebrew/bin/umlet      /opt/homebrew/bin/umlet-15.1

➜ cat /opt/homebrew/bin/umlet
#!/bin/bash
JAVA_HOME="Some homebrew version" exec "/opt/homebrew/Cellar/umlet/15.1/libexec/umlet.sh"  "$@"

By having openjdk-22 locally, I could set the bin/umlet to take that instead:

➜ cat /opt/homebrew/bin/umlet
#!/bin/bash
JAVA_HOME="/path/to/java/openjdk-22" exec "/opt/homebrew/Cellar/umlet/15.1/libexec/umlet.sh"  "$@"

If you use asdf, use the version given here:

➜ asdf where java
/Users/someone/.asdf/installs/java/openjdk-22

Maybe there could be some post-install message for homebrew umlet that refers to this issue as this has to be fixed individually for every machine.