IS* macros may not be given arguments with side effects.

2026-08-18 01:18:51 +02:00 · 1993-01-22 19:41:33 +00:00
parent b538765547
commit 2694667b8d
1 changed files with 2 additions and 1 deletions
@@ -455,7 +455,8 @@ main (argc, argv)
 	  s = optarg;
 	  if (*s == '+')
 	    {
-	      if (!ISDIGIT (*++s))
+	      ++s;
+	      if (!ISDIGIT (*s))
 		usage ("`+' requires a numeric argument");
 	      first_page_number = atoi (s);
 	    }