RFR(S): 8138733: Fix build: gcc < 4.8 doesn't grok -Wno-format-zero-length added in 8080775

[David Lindholm]

Goetz,

On 2015-10-06 09:06, Lindenmaier, Goetz wrote:
> Hi,
>
> could I please get a review and a sponsor for this change?
> http://cr.openjdk.java.net/~goetz/webrevs/8138733-warn/webrev.00/

While I don't really like the GCC-dependency in debug.hpp, I understand 
that it is necessary for older GCCs. Reviewed.

(I'm not an JDK 9 Reviewer).


Thanks,
David

> Sorry for first posting to the wrong list.
>
> Best regards,
>    Goetz.
>
>
> -----Original Message-----
> From: Mikael Gerdin [mailto:mikael.gerdin at oracle.com]
> Sent: Freitag, 2. Oktober 2015 13:06
> To: Lindenmaier, Goetz; hotspot-dev at openjdk.java.net Developers
> Subject: Re: RFR(S): 8138733: Fix build: gcc < 4.8 doesn't grok -Wno-format-zero-length added in 8080775
>
> Redirecting to hotspot-dev at ...
>
> On 2015-10-02 12:58, Lindenmaier, Goetz wrote:
>> Hi,
>>
>> We appreciate change 8080775 a lot, but it breaks the build with older gcc.
>>
>> They don't know the option -Wno-format-zero-length.
>>
>> To fix this, I only add -Wno-format-zero-length for gcc >= 4.8.
>>
>> For the other gccs, I remove ATTRIBUTE_PRINTF from the declaration of
>>
>> report_vm_error().
>>
>> This is no big deal, as correctness is guaranteed once it's compiled with
>>
>> gcc 4.8.
>>
>> I had to fix one fatal() in the ppc files, too.
>>
>> Please review this change.  I please need a sponsor.
>>
>> http://cr.openjdk.java.net/~goetz/webrevs/8138733-warn/webrev.00/
>>
>> Best regards,
>>
>>     Goetz.
>>