Index: VirtualBox-5.1.4/src/VBox/ExtPacks/VBoxDTrace/onnv/lib/libdtrace/common/dt_subr.c
===================================================================
--- VirtualBox-5.1.4.orig/src/VBox/ExtPacks/VBoxDTrace/onnv/lib/libdtrace/common/dt_subr.c
+++ VirtualBox-5.1.4/src/VBox/ExtPacks/VBoxDTrace/onnv/lib/libdtrace/common/dt_subr.c
@@ -833,6 +833,7 @@ dt_gmatch(const char *s, const char *p)
 #else
 	return (p == NULL || *p == '\0' || RTStrSimplePatternMatch(p, s)); /** @todo implement gmatch. */
 #endif
+	return 0;
 }
 
 char *