unwind: tweak inclusion ordering to work around GCC
This is a slightly convoluted workaround. GCC does not support the
__has_feature extension of clang, and this results in some issues with
static_asserts. config.h defines static_assert as a macro with a C-specific
trickery. This then propagates into the C++ headers included after config.h,
which are used with C++11 mode, enabling constexpr constructors. The macro'ed
static_assert does not get treated as the static_assert builtin, and will cause
an error due to a non-empty constexpr constructor. Tweaking the include order
permits the use of libc++ headers to build libunwind with GCC on Linux.
git-svn-id: https://llvm.org/svn/llvm-project/libcxxabi/trunk@228809 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed
