[libunwind][include] Add SEH declarations to <unwind.h>.
Summary:
Make the `_Unwind_Exception` struct correct under SEH. Add a
declaration of `_GCC_specific_handler()`, which is used by SEH versions
of Itanium personality handlers to do common setup. Roughly corresponds
to Clang's D50380.
Reviewers: mstorsjo, rnk, compnerd, smeenai
Subscribers: christof, chrib, cfe-commits, llvm-commits
Differential Revision: https://reviews.llvm.org/D50414
git-svn-id: https://llvm.org/svn/llvm-project/libunwind/trunk@339258 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed
