The following three tests failed to compile in the JDK22 CI:

javax/naming/directory/decodeobject/RunTest.java
javax/crypto/ModularProvider/JCEProviderServiceModularTest.java
java/util/ServiceLoader/restricted/RestrictedRun.java

Here's a log file snippet from the RunTest.java failure:

----------System.err:(43/2927)----------
An exception has occurred in the compiler (22-ea). Please file a bug against the Java compiler via the Java bug reporting page (https://bugreport.java.com) after checking the Bug Database (https://bugs.java.com) for duplicates. Include your program, the following diagnostic, and the parameters passed to the Java compiler in your report. Thank you.
java.lang.VerifyError: Illegal constant pool index 515 in class com.sun.tools.javac.tree.TreeInfo$DeclScanner
Exception Details:
  Location:
    com/sun/tools/javac/tree/TreeInfo$DeclScanner.<init>(Lcom/sun/tools/javac/code/Symbol;)V @3: invokespecial
  Reason:
    Constant pool index 515 is invalid
  Bytecode:
    0000000: 2a2b 01b7 0203 b1

at jdk.compiler/com.sun.tools.javac.tree.TreeInfo.declarationFor(TreeInfo.java:815)
at jdk.compiler/com.sun.tools.javac.comp.Annotate.lambda$annotateLater$1(Annotate.java:279)
at jdk.compiler/com.sun.tools.javac.comp.Annotate.flush(Annotate.java:200)
at jdk.compiler/com.sun.tools.javac.comp.Annotate.unblockAnnotations(Annotate.java:144)
at jdk.compiler/com.sun.tools.javac.comp.Annotate.enterDone(Annotate.java:157)
at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.enterDone(JavaCompiler.java:1796)
at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.enterTrees(JavaCompiler.java:1062)
at jdk.compiler/com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:935)
at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.lambda$doCall$0(JavacTaskImpl.java:104)
at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.invocationHelper(JavacTaskImpl.java:152)
at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.doCall(JavacTaskImpl.java:100)
at jdk.compiler/com.sun.tools.javac.api.JavacTaskImpl.call(JavacTaskImpl.java:94)
at jdk.test.lib.compiler.CompilerUtils.compile(CompilerUtils.java:122)
at jdk.test.lib.compiler.CompilerUtils.compile(CompilerUtils.java:69)
at RunTest.prepareTestClass(RunTest.java:99)
at RunTest.run(RunTest.java:71)
at RunTest.main(RunTest.java:67)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
at java.base/java.lang.reflect.Method.invoke(Method.java:580)
at com.sun.javatest.regtest.agent.MainActionHelper$AgentVMRunnable.run(MainActionHelper.java:333)
at java.base/java.lang.Thread.run(Thread.java:1583)
java.lang.RuntimeException: Compile failed.
at RunTest.prepareTestClass(RunTest.java:100)
at RunTest.run(RunTest.java:71)
at RunTest.main(RunTest.java:67)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
at java.base/java.lang.reflect.Method.invoke(Method.java:580)
at com.sun.javatest.regtest.agent.MainActionHelper$AgentVMRunnable.run(MainActionHelper.java:333)
at java.base/java.lang.Thread.run(Thread.java:1583)

JavaTest Message: Test threw exception: java.lang.RuntimeException
JavaTest Message: shutting down test

result: Failed. Execution failed: `main' threw exception: java.lang.RuntimeException: Compile failed.

The other two tests have the same failure mode.