Added an RAII object that helps set up/tear down the Sema context
information required to implicitly define a C++ special member
function. Use it rather than explicitly setting CurContext on entry
and exit, which is fragile. 

Use this RAII object for the implicitly-defined default constructor,
copy constructor, copy assignment operator, and destructor.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@102840 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed