Index: /trunk/include/iprt/assert.h
===================================================================
--- /trunk/include/iprt/assert.h	(revision 55191)
+++ /trunk/include/iprt/assert.h	(revision 55192)
@@ -1614,5 +1614,5 @@
         if (RT_UNLIKELY(!(expr))) \
         { \
-            RTAssertMsg1Weak(#expr, __LINE__, __FILE__, __PRETTY_FUNCTION__); \
+            RTAssertMsg1Weak(#expr, __LINE__, __FILE__, RT_GCC_EXTENSION __PRETTY_FUNCTION__); \
             RTAssertReleasePanic(); \
         } \
@@ -1829,5 +1829,5 @@
 #define AssertReleaseMsgFailed(a)  \
     do { \
-        RTAssertMsg1Weak((const char *)0, __LINE__, __FILE__, __PRETTY_FUNCTION__); \
+        RTAssertMsg1Weak((const char *)0, __LINE__, __FILE__, RT_GCC_EXTENSION __PRETTY_FUNCTION__); \
         RTAssertMsg2Weak a; \
         RTAssertReleasePanic(); \
@@ -1940,5 +1940,5 @@
         for (;;) \
         { \
-            RTAssertMsg1Weak((const char *)0, __LINE__, __FILE__, __PRETTY_FUNCTION__); \
+            RTAssertMsg1Weak((const char *)0, __LINE__, __FILE__, RT_GCC_EXTENSION __PRETTY_FUNCTION__); \
             RTAssertReleasePanic(); \
         } \
@@ -1954,5 +1954,5 @@
         for (;;) \
         { \
-            RTAssertMsg1Weak((const char *)0, __LINE__, __FILE__, __PRETTY_FUNCTION__); \
+            RTAssertMsg1Weak((const char *)0, __LINE__, __FILE__, RT_GCC_EXTENSION __PRETTY_FUNCTION__); \
             RTAssertMsg2Weak a; \
             RTAssertReleasePanic(); \
Index: /trunk/include/iprt/cdefs.h
===================================================================
--- /trunk/include/iprt/cdefs.h	(revision 55191)
+++ /trunk/include/iprt/cdefs.h	(revision 55192)
@@ -2638,5 +2638,5 @@
 
 /** Source position. */
-#define RT_SRC_POS         __FILE__, __LINE__, __PRETTY_FUNCTION__
+#define RT_SRC_POS         __FILE__, __LINE__, RT_GCC_EXTENSION __PRETTY_FUNCTION__
 
 /** Source position declaration. */
Index: /trunk/src/VBox/Additions/x11/vboxvideo/vboxvideo.h
===================================================================
--- /trunk/src/VBox/Additions/x11/vboxvideo/vboxvideo.h	(revision 55191)
+++ /trunk/src/VBox/Additions/x11/vboxvideo/vboxvideo.h	(revision 55192)
@@ -91,5 +91,5 @@
     vbvxMsg("\nAssertion failed!\n\n"); \
     vbvxMsg("%s\n", #expr); \
-    vbvxMsg("at %s (%s:%d)\n", __PRETTY_FUNCTION__, __FILE__, __LINE__); \
+    vbvxMsg("at %s (%s:%d)\n", RT_GCC_EXTENSION __PRETTY_FUNCTION__, __FILE__, __LINE__); \
     vbvxMsg out; \
     vbvxAbortServer(); \
Index: /trunk/src/VBox/Additions/x11/vboxvideo/vboxvideo_dri.c
===================================================================
--- /trunk/src/VBox/Additions/x11/vboxvideo/vboxvideo_dri.c	(revision 55191)
+++ /trunk/src/VBox/Additions/x11/vboxvideo/vboxvideo_dri.c	(revision 55192)
@@ -182,5 +182,5 @@
     {
         xf86DrvMsg(pScrn->scrnIndex, X_ERROR, "%s: preconditions failed\n",
-                   __PRETTY_FUNCTION__);
+                   RT_GCC_EXTENSION __PRETTY_FUNCTION__);
         rc = FALSE;
     }
Index: /trunk/src/VBox/Devices/Network/slirp/bsd/sys/mbuf.h
===================================================================
--- /trunk/src/VBox/Devices/Network/slirp/bsd/sys/mbuf.h	(revision 55191)
+++ /trunk/src/VBox/Devices/Network/slirp/bsd/sys/mbuf.h	(revision 55192)
@@ -61,5 +61,5 @@
 }
 /* for non-gnu compilers */
-# define __func__ __FUNCTION__
+# define __func__ RT_GCC_EXTENSION __FUNCTION__
 # ifndef __inline
 #  define __inline