[PATCH] Append CXXDefaultInitExpr's wrapped expression to the CFG when visiting a constructor initializer

[Enrico Pertoso]

  Hi,
  sorry for my late reply.

  Regarding to events appearing in an in-class initializer expression, we have now two simple approaches: to add an option for the CFG builder (as you suggested), or to let the code remove all the edges excluding those appearing within the expression wrapped by the `CXXDefaultInitExpr`.

  Currently (at least until r199843), those events will not be reported (either in Xcode or in the command line). The first approach preserves this behaviour.
  {F24874} (screenshot: http://llvm-reviews.chandlerc.com/file/data/lqyk5vypoxtfxvvzbj6m/PHID-FILE-3fxx2h44c3u33vhpjvtg/).

  With the second approach, the output is ambiguous in the presence of multiple constructors.
  {F24876} (screenshot: http://llvm-reviews.chandlerc.com/file/data/43y6wcdmgsstwxsoo7aq/PHID-FILE-wwyqyn2u2pfnot4f3gue/)

  I still prefer to see that warning. If anything more complex than the second approach is required, I'd prefer to keep it separate from this patch and follow the first one. Any suggestions?

http://llvm-reviews.chandlerc.com/D2370