Ticket #11748: boost_patch

diff --git a/include/boost/asio/buffer.hpp b/include/boost/asio/buffer.hpp
index 729a31b..2f02c8a 100644
--- a/include/boost/asio/buffer.hpp
+++ b/include/boost/asio/buffer.hpp
@@ -767,6 +767,16 @@ inline mutable_buffers_1 buffer(void* data, std::size_t size_in_bytes)
   return mutable_buffers_1(mutable_buffer(data, size_in_bytes));
 }

+/// Create a new modifiable buffer that represents the given memory range.
+/**
+ *     @returns <tt>mutable_buffers_1(data, size_in_bytes)</tt>
+ */
+inline mutable_buffers_1 buffer(const char* data, std::size_t size_in_bytes)
+{
+       return mutable_buffers_1(static_cast<void*>(const_cast<char*>(data)), size_in_bytes);
+}
+
+
 /// Create a new non-modifiable buffer that represents the given memory range.
 /**
  * @returns <tt>const_buffers_1(data, size_in_bytes)</tt>.