[GR-46526] Preserve LinkageErrors and re-throw them at run-time.

[graalvmbot]

Run-time example:

$ ./gameoflife.main 
Exception in thread "main" java.lang.UnsupportedClassVersionError: Preview features are not enabled for gameoflife/GameOfLife (class file version 64.65535). Try running with '--enable-preview'
	at gameoflife.Main.main(Main.java:43)

Build-time example:

...
Caused by: com.oracle.graal.pointsto.constraints.UnresolvedElementException: Discovered unresolved type during parsing: gameoflife.GameOfLife. This error is reported at image build time because class gameoflife.Main is registered for linking at image build time by command line.
	at org.graalvm.nativeimage.builder/com.oracle.svm.hosted.phases.SharedGraphBuilderPhase$SharedBytecodeParser.reportUnresolvedElement(SharedGraphBuilderPhase.java:554)
...
Caused by: java.lang.UnsupportedClassVersionError: Preview features are not enabled for gameoflife/GameOfLife (class file version 64.65535). Try running with '--enable-preview'
	at java.base/java.lang.ClassLoader.defineClass1(Native Method)
	at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1013)
	at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:150)
...

[fniephaus]

@zakkak could you maybe run some Quarkus samples and report how many LinkageErrors there are? Maybe we also want an option to print those somehow.

[fniephaus]

Maybe we should make sure that the LinkageError does not reference another Throwable to prevent leakage?

[zakkak]

Wouldn't that risk losing the root cause?

To my understanding LinkageError may only reference another Throwable through the cause field.

[zakkak]

@zakkak could you maybe run some Quarkus samples and report how many LinkageErrors there are? Maybe we also want an option to print those somehow.

Sure, I will try to do some tests tomorrow, otherwise it will have to wait ~2 weeks.

[zakkak]

@zakkak could you maybe run some Quarkus samples and report how many LinkageErrors there are? Maybe we also want an option to print those somehow.

I am appending the results from a simple Java helloworld and some "beefy" scenarios from https://github.com/quarkus-qe/beefy-scenarios.

Test	LinkageErrors
HelloWorld	0
'001-quarkus-getting-started-with-jaxrs-1.0.0-SNAPSHOT-runner'	61
'003-quarkus-many-extensions-1.0.0-SNAPSHOT-runner'	472
'004-quarkus-HHH-and-HV-1.0.0-SNAPSHOT-runner'	68
'005-quarkus-and-maven-profiles-1.0.0-SNAPSHOT-runner'	82
'006-quartz-manually-scheduled-job-1.0.0-SNAPSHOT-runner'	62
'010-quarkus-opentracing-reactive-grpc-1.0.0-SNAPSHOT-runner'	54
'011-quarkus-panache-rest-flyway-1.0.0-SNAPSHOT-runner'	66
'014-quarkus-panache-with-transactions-xa-1.0.0-SNAPSHOT-runner'	403
'015-quarkus-micrometer-1.0.0-SNAPSHOT-runner'	99
'017-quartz-cluster-1.0.0-SNAPSHOT-runner'	79
'018-quarkus-runtime-properties-1.0.0-SNAPSHOT-runner'	33
'019-quarkus-consul-1.0.0-SNAPSHOT-runner'	32
'020-quarkus-http-non-application-endpoints-1.0.0-SNAPSHOT-runner'	100
'021-quarkus-panache-multiple-pus-1.0.0-SNAPSHOT-runner'	54
'022-quarkus-properties-config-all-1.0.0-SNAPSHOT-runner'	49

[zakkak]

Hi @fniephaus , are there any updates on this?

[fniephaus]

No, not at this point. We have an idea that no longer requires a static map, but I haven't had enough time to look into this yet.

[zakkak]

Hi @fniephaus, we hit that issue again in quarkusio/quarkus#41256 (comment)

Are there any plans on merging a fix for it?

[fniephaus]

Hi @zakkak, the PR is unfortunately not in the best state and more changes are needed. I wish I had more time for this but I'm afraid it's currently not a priority. Closing the PR for now

[zakkak]

No, not at this point. We have an idea that no longer requires a static map, but I haven't had enough time to look into this yet.

@fniephaus could you share more info on this so that I could evaluate whether it's something I could contribute?