Index: lib/sanitizer_common/sanitizer_flag_parser.h
===================================================================
--- lib/sanitizer_common/sanitizer_flag_parser.h
+++ lib/sanitizer_common/sanitizer_flag_parser.h
@@ -22,6 +22,7 @@
 
 class FlagHandlerBase {
  public:
+  virtual ~FlagHandlerBase() {}
   virtual bool Parse(const char *value) { return false; }
 };