NoCtorDeser module can not deserialize class derived from Throwable without default constructor

[ppritchard-peer]

JDK: 25.0.2+10
Jackson version: 2.21.2

When using a custom exception without a default constructor, the NoCtorDeser module will construct it with the cause field set to null which will then make Throwable.initCause() throw an exception when deserialization tries to set cause field to its actual value. The exception that is thrown is a bit misleading as the exception "Caused by: java.lang.IllegalStateException: Can't overwrite cause with a null" is lost as it isn't the root cause.

import com.fasterxml.jackson.databind.json.JsonMapper;
import com.fasterxml.jackson.module.noctordeser.NoCtorDeserModule;

public class ExceptionDemo {
	public static class DemoException extends Exception {
		public DemoException(String message, Throwable cause) {
			super(message, cause);
		}
	}

	public static void main(String[] args) throws Exception {
		DemoException demoEx = new DemoException("Error message", null);
		JsonMapper mapper = JsonMapper.builder()
				.addModule(new NoCtorDeserModule())
				.build();

		byte[] bytes = mapper.writerFor(DemoException.class).writeValueAsBytes(demoEx);
		DemoException decoded = mapper.readValue(bytes, DemoException.class);

		System.out.println(decoded);
	}
}