JDK-8160363: assert(discovered->is_oop_or_null()) failed: Expected an oop or NULL for discovered field at 0x0000000000000000

[Yasumasa Suenaga]

Hi all,

This review request relates to JDK-8160310: HotSpot cannot be built with GCC 6 .

I encountered VM crash when I compiled OpenJDK 9 with GCC 6
on Fedora 24 x64.

Address of pointer was expected (0x0), however is_oop_or_null() did not work.
I do not understand why current code did not work, however it works fine as below:

   http://cr.openjdk.java.net/~ysuenaga/JDK-8160363/webrev.00/


Please discuss about it.


Thanks,

Yasumasa