diff --git a/src/libCom/osi/osiThread.cpp b/src/libCom/osi/osiThread.cpp
index 98f4a341b..a9a8b8637 100644
--- a/src/libCom/osi/osiThread.cpp
+++ b/src/libCom/osi/osiThread.cpp
@@ -4,6 +4,7 @@
 // Author: Jeff Hill
 //
 
+#include <stddef.h>
 #define epicsExportSharedSymbols
 #include "osiThread.h"
 
diff --git a/src/libCom/osi/osiThread.h b/src/libCom/osi/osiThread.h
index fcc0e76e5..dc87fd20e 100644
--- a/src/libCom/osi/osiThread.h
+++ b/src/libCom/osi/osiThread.h
@@ -45,6 +45,14 @@ epicsShareFunc int epicsShareAPI threadIsSuspended(threadId id);
 epicsShareFunc void epicsShareAPI threadSleep(double seconds);
 epicsShareFunc threadId epicsShareAPI threadGetIdSelf(void);
 
+epicsShareFunc const char * epicsShareAPI threadGetNameSelf(void);
+
+/* For threadGetName name is guaranteed to be null terminated */
+/* size is size of buffer to hold name (including terminator */
+/* Failure results in a null string stored in name */
+epicsShareFunc void epicsShareAPI threadGetName(
+    threadId id, char *name,size_t size);
+
 typedef void * threadPrivateId;
 epicsShareFunc threadPrivateId epicsShareAPI threadPrivateCreate (void);
 epicsShareFunc void epicsShareAPI threadPrivateDelete (threadPrivateId id);
diff --git a/src/libCom/osi/osiTime.cpp b/src/libCom/osi/osiTime.cpp
index f0e18bad0..c320e6cde 100644
--- a/src/libCom/osi/osiTime.cpp
+++ b/src/libCom/osi/osiTime.cpp
@@ -28,6 +28,7 @@
  *
  */
 
+#include <stddef.h>
 #include <stdio.h>
 #include <limits.h>