According to http://www.linuxbase.org/betaspecs/lsb/LSB-Core-generic/LSB-Core-generic/ehframechpt.html we should always use 1. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235923 91177308-0d34-0410-b5e6-96231b3b80d8