[llvm-commits] Patch to support projects using C++0x mode

[Nick Sumner]

C++0x mode in GCC requires that destructors be accessible by children
in the class hierarchy. This is true even if the destructors in both a
parent and its child are deleted.

The attached patch fixes deleted destructor visibility for Operators
to allow GCC to build LLVM projects that use C++0x mode. It simply
makes deleted parent destructors protected instead of private.

-- 
Nick Sumner
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