7186278: Build error after CR#6995781 / 7151532 with GCC 4.7.0

[David Holmes]

My sincerest apologies. This problem came in through another report 
today and was picked up by a colleague. I knew it looked familiar but I 
couldn't find these emails at the time. It seems my colleague did find 
this bug report to associate the patch with but the report does not 
contain the same detail that was exchanged in the email.

Again my apologies for the omission of the attribution.

David Holmes

On 1/08/2012 10:19 AM, Takao, Shinji wrote:
> Hi All,
>
> It seems that the Yasumasa's patch has employed in:
> hg: hsx/hotspot-rt/hotspot: 7186278: Build error after CR#6995781 /7151532 with GCC 4.7.0
> http://hg.openjdk.java.net/hsx/hotspot-rt/hotspot/rev/5e2dc722e70d
>
> Although that may be a simply modification, I feel odd that there is no name of Yasumasa
> in the ChangeSet...
>
> I am glad if you consider him a contributor. :-)
>
> Thanks,
> Shinji
>
>
>> On 24/07/2012 5:13 PM, Yasumasa Suenaga wrote:
>>> Hi David.
>>>
>>> Thank you for replying.
>>>
>>>
>>> "NoPermGen" comes so soon?
>>
>> Not too far away AFAIK.
>>
>>> I want to build / use JDK8 on Fedora17 or later.
>>>
>>> So I would like you to merge this patch into mainline.
>>
>> The bug has been accepted it now depends on resources/priorities etc.
>>
>> Thanks,
>> David
>>
>>>
>>> Best regards,
>>>
>>> Yasumasa
>>>
>>>
>>> On 2012/07/24 15:41, David Holmes wrote:
>>>> Thank you for the report. We recently encountered a similar GCC 4.7
>>>> issue (7172226). I think this may be addressed in the
>> upcoming NoPermGen
>>>> changes but we can use the patch in other release trains
>> if necessary.
>>>>
>>>> David Holmes
>>>>
>>>> On 24/07/2012 4:09 PM, Yasumasa Suenaga wrote:
>>>>> Hi,
>>>>>
>>>>> When I build JDK8 with GCC 4.7.0 on Fedora17, it fails
>> with message as following:
>>>>>
>>>>> ----------
>>>>>
>> /usr/src/OpenJDK/8/test/jdk8/hotspot/src/share/vm/utilities/ha
>> shtable.hpp: In instantiation of 'int Hashtable<T,
>> F>::index_for(Symbol*) [with T = constantPoolOopDesc*; short
>> unsigned int F = 256u]':
>>>>>
>> /usr/src/OpenJDK/8/test/jdk8/hotspot/src/share/vm/utilities/ha
>> shtable.cpp:317:16:   required from here
>>>>>
>> /usr/src/OpenJDK/8/test/jdk8/hotspot/src/share/vm/utilities/ha
>> shtable.hpp:263:44: error: 'hash_to_index' was not declared
>> in this scope, and no declarations were found by
>> argument-dependent lookup at the point of instantiation [-fpermissive]
>>>>>
>> /usr/src/OpenJDK/8/test/jdk8/hotspot/src/share/vm/utilities/ha
>> shtable.hpp:263:44: note: declarations in dependent base
>> 'BasicHashtable<256u>' are not found by unqualified lookup
>>>>>
>> /usr/src/OpenJDK/8/test/jdk8/hotspot/src/share/vm/utilities/ha
>> shtable.hpp:263:44: note: use 'this->hash_to_index' instead
>>>>> ----------
>>>>>
>>>>> This problem is caused by C++ template class.
>>>>> We have to explicit references of C++ class member to access them.
>>>>>
>>>>>       Bug 43282 - GCC looks into dependent bases during
>> unqualified lookup
>>>>>       http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43282
>>>>>
>>>>>
>>>>> I posted this problem on BugDatabase as a new bug.
>>>>>
>>>>> I've made a patch which attached in this email, and it
>> works fine in my environment.
>>>>> I would like to contribute this patch, and I hope to
>> merge this patch into mainline.
>>>>>
>>>>> Please cooperate.
>>>>>
>>>>>
>>>>> Best regards,
>>>>> Yasumasa
>>>>>
>>>
>>>
>