[analyzer] Warn about the use of insecure, deprecated vfork() function PR11053 (http://llvm.org/bugs/show_bug.cgi?id=11053). 

A patch by Graham Lee!

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@141643 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed