Index: /trunk/src/VBox/Runtime/common/fuzz/fuzz.cpp
===================================================================
--- /trunk/src/VBox/Runtime/common/fuzz/fuzz.cpp	(revision 77483)
+++ /trunk/src/VBox/Runtime/common/fuzz/fuzz.cpp	(revision 77484)
@@ -353,5 +353,5 @@
         size_t cbIgn = 0;
         pMemHdr->cb = cb;
-        ASMAtomicAddSize(&pThis->cbMemTotal, cb + sizeof(RTFUZZMEMHDR), &cbIgn); RT_NOREF(cbIgn);
+        size_t cbIgn = ASMAtomicAddZ(&pThis->cbMemTotal, cb + sizeof(RTFUZZMEMHDR)); RT_NOREF(cbIgn);
         return pMemHdr + 1;
     }
@@ -372,6 +372,5 @@
     PRTFUZZMEMHDR pMemHdr = ((PRTFUZZMEMHDR)pv) - 1;
 
-    size_t cbIgn = 0;
-    ASMAtomicSubSize(&pThis->cbMemTotal, pMemHdr->cb + sizeof(RTFUZZMEMHDR), &cbIgn); RT_NOREF(cbIgn);
+    size_t cbIgn = ASMAtomicSubZ(&pThis->cbMemTotal, pMemHdr->cb + sizeof(RTFUZZMEMHDR)); RT_NOREF(cbIgn);
     RTMemFree(pMemHdr);
 }