Workaround for MSVC stdlib and coroutine interaction:

If beast::Time::currentTimeMillis is first called from a coroutine launched
using boost::asio::spawn, Win32 throws an exception. This workaround calls
getCurrentTime once in main to prevent the exception.
Reference:
    https://svn.boost.org/trac/boost/ticket/10657

src/ripple/unity/app.cpp

@@ -43,6 +43,8 @@
 #include <ripple/app/main/Application.cpp>
 #include <ripple/app/main/Main.cpp>
 
+#include <beast/module/core/time/Time.h>
+
 //------------------------------------------------------------------------------
 
 namespace ripple {
@@ -61,6 +63,10 @@ struct ProtobufLibrary
 //
 int main (int argc, char** argv)
 {
+    // Workaround for Boost.Context / Boost.Coroutine
+    // https://svn.boost.org/trac/boost/ticket/10657
+    (void)beast::Time::currentTimeMillis();
+
 #if defined(__GNUC__) && !defined(__clang__)
     auto constexpr gccver = (__GNUC__ * 100 * 100) +
                             (__GNUC_MINOR__ * 100) +