Change FDBKeyValue's key and value members to have type uint8_t*.

bindings/c/foundationdb/fdb_c.h

@@ -91,12 +91,21 @@ extern "C" {
     DLLEXPORT WARN_UNUSED_RESULT fdb_error_t fdb_add_network_thread_completion_hook(void (*hook)(void*), void *hook_parameter);
 
 #pragma pack(push, 4)
+#if FDB_API_VERSION >= 700
+    typedef struct keyvalue {
+        const uint8_t* key;
+        int key_length;
+        const uint8_t* value;
+        int value_length;
+    } FDBKeyValue;
+#else
     typedef struct keyvalue {
         const void* key;
         int key_length;
         const void* value;
         int value_length;
     } FDBKeyValue;
+#endif
 #pragma pack(pop)
 
     DLLEXPORT void fdb_future_cancel( FDBFuture* f );

documentation/sphinx/source/api-version-upgrade-guide.rst

@@ -9,6 +9,16 @@ This document provides an overview of changes that an application developer may
 
 For more details about API versions, see :ref:`api-versions`.
 
+.. _api-version-upgrade-guide-700:
+
+API version 700
+===============
+
+C bindings
+----------
+
+* The ``FDBKeyValue`` struct's ``key`` and ``value`` members have changed type from ``void*`` to ``uint8_t*``.
+
 .. _api-version-upgrade-guide-620:
 
 API version 620

documentation/sphinx/source/release-notes.rst

@@ -18,6 +18,7 @@ Status
 Bindings
 --------
 * Java: Introduced ``keyAfter`` utility function that can be used to create the immediate next key for a given byte array. `(PR #2458) <https://github.com/apple/foundationdb/pull/2458>`_
+* C: The ``FDBKeyValue`` struct's ``key`` and ``value`` members have changed type from ``void*`` to ``uint8_t*``. `(PR #) <https://github.com/apple/foundationdb/pull/>`_
 
 Other Changes
 -------------