Change Method Signature fails to modify parameter type

Change Method Signature fails when trying to modify a parameter type.

Environment

• Operating System: Mac
• JDK version: openjdk version "21.0.2" 2024-01-16 LTS
• Visual Studio Code version: 1.87.2
• Java extension version: v0.25.2023121402

Steps To Reproduce

1. Use "Change method signature" to change the type of an input parameter
2. Hit Preview or Refactor

Current Result

The buttons do not seem to do anything. In the output panel, the following exception is shown:

SEVERE: Internal error: java.lang.NullPointerException: Cannot invoke "org.eclipse.jdt.internal.compiler.ast.TypeReference.getTypeName()" because "argument.type" is null
java.util.concurrent.CompletionException: java.lang.NullPointerException: Cannot invoke "org.eclipse.jdt.internal.compiler.ast.TypeReference.getTypeName()" because "argument.type" is null
	at java.base/java.util.concurrent.CompletableFuture.encodeThrowable(Unknown Source)
	at java.base/java.util.concurrent.CompletableFuture.completeThrowable(Unknown Source)
	at java.base/java.util.concurrent.CompletableFuture$UniApply.tryFire(Unknown Source)
	at java.base/java.util.concurrent.CompletableFuture$Completion.exec(Unknown Source)
	at java.base/java.util.concurrent.ForkJoinTask.doExec(Unknown Source)
	at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(Unknown Source)
	at java.base/java.util.concurrent.ForkJoinPool.scan(Unknown Source)
	at java.base/java.util.concurrent.ForkJoinPool.runWorker(Unknown Source)
	at java.base/java.util.concurrent.ForkJoinWorkerThread.run(Unknown Source)
Caused by: java.lang.NullPointerException: Cannot invoke "org.eclipse.jdt.internal.compiler.ast.TypeReference.getTypeName()" because "argument.type" is null
	at org.eclipse.jdt.internal.compiler.parser.RecoveredMethod.updateFromParserState(RecoveredMethod.java:496)
	at org.eclipse.jdt.internal.compiler.parser.Parser.updateRecoveryState(Parser.java:14202)
	at org.eclipse.jdt.internal.compiler.parser.Parser.resumeOnSyntaxError(Parser.java:14112)
	at org.eclipse.jdt.internal.compiler.parser.Parser.parse(Parser.java:12626)
	at org.eclipse.jdt.internal.compiler.parser.Parser.parse(Parser.java:12978)
	at org.eclipse.jdt.internal.compiler.parser.Parser.parse(Parser.java:12935)
	at org.eclipse.jdt.internal.compiler.parser.Parser.dietParse(Parser.java:11317)
	at org.eclipse.jdt.internal.core.search.matching.MatchLocator.parseAndBuildBindings(MatchLocator.java:1950)
	at org.eclipse.jdt.internal.core.search.matching.MatchLocator.locateMatches(MatchLocator.java:1305)
	at org.eclipse.jdt.internal.core.search.matching.MatchLocator.locateMatches(MatchLocator.java:1406)
	at org.eclipse.jdt.internal.core.search.matching.MatchLocator.locateMatches(MatchLocator.java:1526)
	at org.eclipse.jdt.internal.core.search.JavaSearchParticipant.locateMatches(JavaSearchParticipant.java:134)
	at org.eclipse.jdt.internal.core.search.BasicSearchEngine.findMatches(BasicSearchEngine.java:253)
	at org.eclipse.jdt.internal.core.search.BasicSearchEngine.search(BasicSearchEngine.java:599)
	at org.eclipse.jdt.core.search.SearchEngine.search(SearchEngine.java:669)
	at org.eclipse.jdt.internal.corext.refactoring.rename.RippleMethodFinder2.findAllDeclarations(RippleMethodFinder2.java:475)
	at org.eclipse.jdt.internal.corext.refactoring.rename.RippleMethodFinder2.findAllRippleMethods(RippleMethodFinder2.java:208)
	at org.eclipse.jdt.internal.corext.refactoring.rename.RippleMethodFinder2.getAllRippleMethods(RippleMethodFinder2.java:188)
	at org.eclipse.jdt.internal.corext.refactoring.rename.RippleMethodFinder2.getRelatedMethods(RippleMethodFinder2.java:181)
	at org.eclipse.jdt.internal.corext.refactoring.structure.ChangeSignatureProcessor.checkFinalConditions(ChangeSignatureProcessor.java:823)
	at org.eclipse.ltk.core.refactoring.participants.ProcessorBasedRefactoring.checkFinalConditions(ProcessorBasedRefactoring.java:227)
	at org.eclipse.jdt.ls.core.internal.handlers.ChangeSignatureHandler.getChangeSignatureRefactoring(ChangeSignatureHandler.java:198)
	at org.eclipse.jdt.ls.core.internal.handlers.GetRefactorEditHandler.getEditsForRefactor(GetRefactorEditHandler.java:161)
	at org.eclipse.jdt.ls.core.internal.handlers.JDTLanguageServer.lambda$46(JDTLanguageServer.java:1128)
	at org.eclipse.jdt.ls.core.internal.BaseJDTLanguageServer.lambda$0(BaseJDTLanguageServer.java:87)
	... 7 more

Expected Result

Should just work. Or at least give visual feedback an about the error (fails silently).

Additional Informations

Riprodurre il problema utilizzando il refactoring Change Method Signature ed esaminare lo stack trace tramite ChangeSignatureHandler.getChangeSignatureRefactoring e ChangeSignatureProcessor.checkFinalConditions. Verificare come il refactoring JDT gestisce un tipo di parametro modificato, quindi verificare che Preview o Refactor vengano completati correttamente e che gli errori forniscano un feedback visibile.