--- dnssec-keyfromlabel.c.orig	2018-07-14 18:37:30.377901398 -0700
+++ dnssec-keyfromlabel.c	2018-07-14 18:38:31.271232383 -0700
@@ -225,6 +225,9 @@
 			break;
 		case 'l':
 			label = isc_mem_strdup(mctx, isc_commandline_argument);
+			if (label == NULL) {
+                                fatal("Failed to allocate memory for "
+                                      "label");
 			break;
 		case 'n':
 			nametype = isc_commandline_argument;