RFR(XXS): 8214125: [test] Fix comparison between pointer and integer in test_ptrQueueBufferAllocator.cpp

[Volker Simonis]

Thanks everybody for the quick reviews!

I've successfully run this change through the submit repo and pushed it.

Best regards,
Volker

On Tue, Nov 20, 2018 at 5:40 PM Thomas Stüfe <thomas.stuefe at gmail.com> wrote:
>
> Looks good and trivial.
>
> I remember running into this before, see 8171225. What I do not understand is, should NULL not be (void*)0 according to Posix: http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/stddef.h.html ? So this should be a pointer-pointer comparison.
>
> Maybe we just miss include <stddef.h> somehow on AIX?
>
> .. Thomas
>
> On Tue, Nov 20, 2018, 17:03 Volker Simonis <volker.simonis at gmail.com wrote:
>>
>> Hi,
>>
>> can I please have a review fort he following trivial gtest fix which
>> currently breaks the AIX build:
>>
>> http://cr.openjdk.java.net/~simonis/webrevs/2018/8214125/
>> https://bugs.openjdk.java.net/browse/JDK-8214125
>>
>> Change JDK-8213352 introduced an gtest which does a comparison between
>> an integer and a pointer which is forbidden in C++:
>>
>>     ASSERT_EQ(NULL, nodes[i]->next());
>>
>> I don't know why other compilers havn't complained about it, but XLC did.
>>
>> The fix for this is trivial - just cast NULL to the appropriate pointer type:
>>
>>     ASSERT_EQ((BufferNode*)NULL, nodes[i]->next());
>>
>>
>> Thank you and best regards,
>> Volker