Index: Makefile
==================================================================
--- Makefile
+++ Makefile
@@ -117,11 +117,11 @@
 tclsh-local: tclsh-local.c
 	$(CC) $(CPPFLAGS) $(CFLAGS) $(LDFLAGS) -UUSE_TCL_STUBS -o tclsh-local tclsh-local.c $(LIBS) $(TCL_LIB)
 
 do-asan: Makefile
 	rm -f tclsh-local
-	$(MAKE) tclsh-local test XVFS_TEST_EXIT_ON_FAILURE=0 CC='clang -fsanitize=address' XVFS_ADD_CFLAGS='-Wno-string-plus-int' TCLSH=./tclsh-local
+	$(MAKE) tclsh-local test XVFS_TEST_EXIT_ON_FAILURE=0 CC='clang -fsanitize=address,undefined,leak' XVFS_ADD_CFLAGS='-Wno-string-plus-int' TCLSH=./tclsh-local
 
 do-msan: Makefile
 	rm -f tclsh-local
 	$(MAKE) tclsh-local test XVFS_TEST_EXIT_ON_FAILURE=0 CC='clang -fsanitize=memory' XVFS_ADD_CFLAGS='-Wno-string-plus-int' TCLSH=./tclsh-local