用过Btrace unsafe模式来解答下，unsafe模式能不能创建对象?

[shigang_xing]

Btrace UserGuide(https://kenai.com/projects/btrace/pages/UserGuide )中提到 BTrace Restrictions ，又提到设置unsafe参数就不会检查‘BTrace Restrictions’

BTrace Restrictions
can not create new objects.
can not create new arrays.
can not throw exceptions.
... ...

Supported Arguments
unsafe - do not check for btrace restrictions violations (true/false)


我在btrace shell 脚本中指定了-Dcom.sun.btrace.unsafe=true，但还是不能create new object?

在网上找了两篇文章，都说unsafe管用：
https://blogs.oracle.com/sundararajan/entry/btrace_unsafe_mode
http://ar.newsmth.net/thread-cc7a8616494125.html

到底unsafe模式下能不能创建对象？如果不能，unsafe模式有什么用？

[shigang_xing]

@BTrace(unsafe=true) https://kenai.com/jira/browse/BTRACE-105