Hi Mandy, > On 14 May 2020, at 21:12, Mandy Chung <mandy.ch...@oracle.com> wrote: > > MethodHandles::privateLookupIn should prepare for being called during early > startup when the module of java.base classes are not yet assigned. This bug > is uncovered by panama prototype converting NIO to use memory access API. > > The fix is very simple and move the call to Module::isNamed only if the > caller module and target module are different: > http://cr.openjdk.java.net/~mchung/jdk15/webrevs/8244961/webrev.00/
LGTM. In this case both the caller and target modules are, well.. , null (at this point of initialization). So your change should avoid tripping up on this and resulting in a NPE. I am surprised that nothing else has run into this before, but the code executed this early on is somewhat limited. -Chris.
