similar to https://www.gnu.org/software/gnutls/clang/report-NwyD8A.html

--- argp-standalone-1.3/argp-help.c	2003-12-11 14:07:05.000000000 +0530
+++ argp-standalone-1.3-patch/argp-help.c	2021-08-30 20:06:23.807999907 +0530
@@ -731,6 +731,11 @@
 canon_doc_option(const char** name)
 {
     int non_opt;
+#if 1
+    if (!*name)
+        non_opt = 1;
+    else {
+#endif
     /* Skip initial whitespace.  */
     while (isspace(**name))
         (*name)++;
@@ -739,6 +744,9 @@
     /* Skip until part of name used for sorting.  */
     while (**name && !isalnum(**name))
         (*name)++;
+#if 1
+    }
+#endif
     return non_opt;
 }