Introduce CFGImplicitDtor::isNoReturn() to query whether a destructor actually returns.  Use this for -Wreturn-type to prune false positives reported in PR 6884.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126875 91177308-0d34-0410-b5e6-96231b3b80d8
4 files changed