diff -urN VirtualBox-5.0.0.old/src/VBox/ExtPacks/VBoxDTrace/onnv/lib/libdtrace/common/dt_printf.c VirtualBox-5.0.0/src/VBox/ExtPacks/VBoxDTrace/onnv/lib/libdtrace/common/dt_printf.c
--- VirtualBox-5.0.0.old/src/VBox/ExtPacks/VBoxDTrace/onnv/lib/libdtrace/common/dt_printf.c	2015-07-14 20:53:12.121479325 +0200
+++ VirtualBox-5.0.0/src/VBox/ExtPacks/VBoxDTrace/onnv/lib/libdtrace/common/dt_printf.c	2015-07-14 21:04:02.001865414 +0200
@@ -1568,10 +1568,10 @@
 			width = 0;
 
 		if (width != 0)
-			f += snprintf(f, sizeof (format), "%d", ABS(width));
+			f += snprintf(f, sizeof (f), "%d", ABS(width));
 
 		if (prec > 0)
-			f += snprintf(f, sizeof (format), ".%d", prec);
+			f += snprintf(f, sizeof (f), ".%d", prec);
 
 		(void) strcpy(f, pfd->pfd_fmt);
 		pfd->pfd_rec = rec;