Bug#1057513: kotlin: FTBFS with default Java 21

[Vladimir Petko]

Source: kotlin
Version: 1.3.31+ds1-1build5
Severity: important
Tags: ftbfs
User: debian-java at lists.debian.org
Usertags: default-java21

Dear Maintainers,

The package kotlin ftbfs with default Java 21.
The relevant part of the build log:
---------------
All input files are considered out-of-date for incremental task ':buildSrc:compileKotlin'.
file or directory '/<<PKGBUILDDIR>>/buildSrc/src/main/java', not found
file or directory '/<<PKGBUILDDIR>>/buildSrc/src/main/java', not found
Using Kotlin/JVM incremental compilation
exception: java.lang.IllegalStateException: Could not load module definition from: VirtualFile: /usr/lib/jvm/java-21-openjdk-amd64!/modules/java.base/module-info.class. The file might be broken by incorrect post-processing via bytecode tools. Please remove this file from the classpath.
	at org.jetbrains.kotlin.resolve.jvm.modules.JavaModuleInfo$Companion.read(JavaModuleInfo.kt:85)
	at org.jetbrains.kotlin.cli.jvm.modules.CliJavaModuleFinder.findSystemModule(CliJavaModuleFinder.kt:44)
	at org.jetbrains.kotlin.cli.jvm.modules.CliJavaModuleFinder.access$findSystemModule(CliJavaModuleFinder.kt:25)
	at org.jetbrains.kotlin.cli.jvm.modules.CliJavaModuleFinder$systemModules$1.invoke(CliJavaModuleFinder.kt:37)
	at org.jetbrains.kotlin.cli.jvm.modules.CliJavaModuleFinder$systemModules$1.invoke(CliJavaModuleFinder.kt:25)
	at kotlin.sequences.TransformingSequence$iterator$1.next(Sequences.kt:172)
	at kotlin.sequences.FilteringSequence$iterator$1.calcNext(Sequences.kt:132)
	at kotlin.sequences.FilteringSequence$iterator$1.hasNext(Sequences.kt:156)
	at kotlin.sequences.FlatteningSequence$iterator$1.ensureItemIterator(Sequences.kt:278)
	at kotlin.sequences.FlatteningSequence$iterator$1.hasNext(Sequences.kt:265)
	at kotlin.sequences.SequencesKt___SequencesKt.none(_Sequences.kt:1298)
	at org.jetbrains.kotlin.cli.jvm.compiler.ClasspathRootsResolver.addModularRoots(ClasspathRootsResolver.kt:226)
	at org.jetbrains.kotlin.cli.jvm.compiler.ClasspathRootsResolver.computeRoots(ClasspathRootsResolver.kt:123)
	at org.jetbrains.kotlin.cli.jvm.compiler.ClasspathRootsResolver.convertClasspathRoots(ClasspathRootsResolver.kt:79)
	at org.jetbrains.kotlin.cli.jvm.compiler.KotlinCoreEnvironment.<init>(KotlinCoreEnvironment.kt:228)
	at org.jetbrains.kotlin.cli.jvm.compiler.KotlinCoreEnvironment.<init>(KotlinCoreEnvironment.kt:122)
	at org.jetbrains.kotlin.cli.jvm.compiler.KotlinCoreEnvironment$Companion.createForProduction(KotlinCoreEnvironment.kt:409)
	at org.jetbrains.kotlin.cli.jvm.K2JVMCompiler.createCoreEnvironment(K2JVMCompiler.kt:258)
	at org.jetbrains.kotlin.cli.jvm.K2JVMCompiler.doExecute(K2JVMCompiler.kt:123)
	at org.jetbrains.kotlin.cli.jvm.K2JVMCompiler.doExecute(K2JVMCompiler.kt:53)
	at org.jetbrains.kotlin.cli.common.CLICompiler.execImpl(CLICompiler.kt:84)
	at org.jetbrains.kotlin.cli.common.CLICompiler.execImpl(CLICompiler.kt:42)
	at org.jetbrains.kotlin.cli.common.CLITool.exec(CLITool.kt:103)
	at org.jetbrains.kotlin.cli.common.CLITool.exec(CLITool.kt:81)
	at org.jetbrains.kotlin.cli.common.CLITool.exec(CLITool.kt:49)
	at org.jetbrains.kotlin.cli.common.CLITool$Companion.doMainNoExit(CLITool.kt:214)
	at org.jetbrains.kotlin.cli.common.CLITool$Companion.doMain(CLITool.kt:206)
	at org.jetbrains.kotlin.cli.jvm.K2JVMCompiler$Companion.main(K2JVMCompiler.kt:300)
	at org.jetbrains.kotlin.cli.jvm.K2JVMCompiler.main(K2JVMCompiler.kt)
Caused by: java.lang.IllegalArgumentException: Unsupported class file major version 65
	at org.jetbrains.org.objectweb.asm.ClassReader.<init>(ClassReader.java:199)
	at org.jetbrains.org.objectweb.asm.ClassReader.<init>(ClassReader.java:180)
	at org.jetbrains.org.objectweb.asm.ClassReader.<init>(ClassReader.java:166)
	at org.jetbrains.kotlin.resolve.jvm.modules.JavaModuleInfo$Companion.read(JavaModuleInfo.kt:68)
	... 28 more

:buildSrc:compileKotlin FAILED
:compileKotlin (Thread[#29,Daemon worker,5,main]) completed. Took 2.855 secs.

FAILURE: Build failed with an exception.

---------------


-- System Information:
Debian Release: trixie/sid
  APT prefers mantic-updates
  APT policy: (500, 'mantic-updates'), (500, 'mantic-security'), (500, 'mantic')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 6.5.0-13-generic (SMP w/32 CPU threads; PREEMPT)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled