Merge pull request #756 from evoskuil/master

Work around value_t{ size_t } ambiguity (xcode).

Author: evoskuil

include/bitcoin/network/messages/rpc/model.hpp

@@ -104,6 +104,11 @@ struct value_t
     value_t(const any_t& value) NOEXCEPT : inner_{ value } {}
     value_t(any_t&& value) NOEXCEPT : inner_{ std::move(value) } {}
 
+#if defined (HAVE_XCODE)
+    value_t(size_t value) NOEXCEPT : inner_{
+        system::possible_wide_cast<uint64_t>(value) } {}
+#endif
+
     /// Forwarding constructors for in-place variant construction.
     FORWARD_VARIANT_CONSTRUCT(value_t, inner_)
     FORWARD_VARIANT_ASSIGNMENT(value_t, inner_)
@@ -122,7 +127,7 @@ struct value_t
     ALTERNATIVE_VARIANT_ASSIGNMENT(value_t, uint64_t, inner_)
     ALTERNATIVE_VARIANT_ASSIGNMENT(value_t, json_t, inner_)
     ALTERNATIVE_VARIANT_ASSIGNMENT(value_t, any_t, inner_)
-        
+
     inner_t& value() NOEXCEPT
     {
         return inner_;