Handle argv = { NULL } in ARGBEGIN

michaelforney · michaelforney · commit 4b3e5a6bd643 · 2019-07-06T15:33:46.000-07:00
diff --git a/arg.h b/arg.h
@@ -1,6 +1,7 @@
 #define ARGBEGIN \
 	for (;;) { \
-		++argv, --argc; \
+		if (argc > 0) \
+			++argv, --argc; \
 		if (argc == 0 || (*argv)[0] != '-') \
 			break; \
 		if ((*argv)[1] == '-' && !(*argv)[2]) { \
