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

[Dmitry Samersoff]

Yasumasa,

Statements below

return this == NULL ? true : is_oop(ignore_mark_word);

and

return (this == NULL) || is_oop(ignore_mark_word);

looks equivalent for me.

-Dmitry

On 2016-06-27 17:41, Yasumasa Suenaga wrote:
> 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
> 
> 


-- 
Dmitry Samersoff
Oracle Java development team, Saint Petersburg, Russia
* I would love to change the world, but they won't give me the sources.