[libc++] Implement exception_ptr on Windows
Summary:
This patch implements exception_ptr on Windows using the `__ExceptionPtrFoo` functions provided by MSVC.
The `__ExceptionPtrFoo` functions are defined inside the C++ standard library, `msvcprt`, which is unfortunate because it requires libc++ to link to the MSVC STL. However this doesn't seem to cause any immediate problems. However to be safe I kept all usages within the libc++ dylib so that user programs wouldn't have to link to MSVCPRT as well.
Note there are still 2 outstanding exception_ptr/nested_exception test failures.
* `current_exception.pass.cpp` needs to be rewritten for the Windows exception_ptr semantics which copy the exception every time.
* `rethrow_if_nested.pass.cpp` need investigation. It hits a stack overflow, likely from recursion.
This patch also gets most of the `<future>` tests passing as well.
Reviewers: mclow.lists, compnerd, bcraig, rmaprath, majnemer, BillyONeal, STL_MSFT
Subscribers: mgorny, cfe-commits
Differential Revision: https://reviews.llvm.org/D32927
llvm-svn: 302393
Cr-Mirrored-From: sso://chromium.googlesource.com/_direct/external/github.com/llvm/llvm-project
Cr-Mirrored-Commit: 3e254a6ece452fcaee6da4a7286245d0a9ef7c45
diff --git a/src/exception.cpp b/src/exception.cpp
index 0b502cd..4359d12 100644
--- a/src/exception.cpp
+++ b/src/exception.cpp
@@ -20,7 +20,7 @@
#if defined(_LIBCPP_ABI_MICROSOFT)
#include "support/runtime/exception_msvc.ipp"
-#include "support/runtime/exception_pointer_unimplemented.ipp"
+#include "support/runtime/exception_pointer_msvc.ipp"
#elif defined(_LIBCPPABI_VERSION)
#include "support/runtime/exception_libcxxabi.ipp"
#include "support/runtime/exception_pointer_cxxabi.ipp"