...where it has an additional nonstandard member, at least on Linux x86-64. Not sure whether #if defined _LIBCPPABI_VERSION is the best way to distinguish libc++abi from other C++ runtimes, but #define _LIBCPPABI_VERSION 1002 is what it has in its cxxabi.h. Change-Id: I9edbca27aa2bedbc5b2e996fd5ffcfc2e8eb42d9