RFR(xs): 8171408: [aix] TOC overflow when linking the gtest libjvm.so

David Holmes david.holmes at oracle.com
Mon Dec 19 20:43:43 UTC 2016


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On 19/12/2016 11:28 PM, Thomas Stüfe wrote:
> On Sun, Dec 18, 2016 at 1:50 PM, Thomas Stüfe <thomas.stuefe at gmail.com>
> wrote:
>> Hi all,
>> please take a look at this small fix. In short, on AIX when linking the
>> gtest version of libjvm.so, the TOC overflows.
>> So the gtest libjvm.so must be linked with -bbigtoc, in contrast to the
>> regular libjvm.so, which has no problems and can keep using a small TOC.
>> Also, I compile all gtest objects with -qpic=large. Note that this only
>> affects the gtest objects. The regular objects - which the gtest libjvm.so
>> shares with the regular libjvm.so - I left at -qpic[=small]. This means we
>> pay a bit of a performance overhead in the gtest libjvm.so but leave the
>> regular libjvm.so at its optimal linker settings.
>> Issue:
>> https://bugs.openjdk.java.net/browse/JDK-8171408
>> Webrev:
>> http://cr.openjdk.java.net/~stuefe/webrevs/8171408-aix-
>> TOC-overflow-when-linking-the-gtest-libjvm/webrev.00/
>> (Hope the webrev link works, the webserver is still down).
>> Kind Regards, Thomas
> Because cr.openjdk.java.net is still down, here the zipped webrev as
> attachment.

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