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

[Yasumasa Suenaga]

Hi,

When I build JDK8 with GCC 4.7.0 on Fedora17, it fails with message as following:

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/usr/src/OpenJDK/8/test/jdk8/hotspot/src/share/vm/utilities/hashtable.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/hashtable.cpp:317:16:   required from here
/usr/src/OpenJDK/8/test/jdk8/hotspot/src/share/vm/utilities/hashtable.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/hashtable.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/hashtable.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

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