From a0eecb52bc2861656019ee14fe4ee3ae211dc134 Mon Sep 17 00:00:00 2001
From: shuhua huang <hyd007@163.com>
Date: Fri, 2 Aug 2024 05:54:12 +0000
Subject: [PATCH] fix system fatal error caused by imperfect user input
 commands, e.g. "rtl sym -u"

---
 cpukit/libdl/rtl-shell.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cpukit/libdl/rtl-shell.c b/cpukit/libdl/rtl-shell.c
index 18f1e08901..20122aec7f 100644
--- a/cpukit/libdl/rtl-shell.c
+++ b/cpukit/libdl/rtl-shell.c
@@ -265,7 +265,7 @@ rtems_rtl_parse_arg_index (const char  opt,
     /*
      * Is this an option and does it match what we are looking for?
      */
-    if (argv[arg][0] == '-' && argv[arg][1] == opt && arg < argc)
+    if (arg < argc && argv[arg][0] == '-' && argv[arg][1] == opt)
       return arg + 1;
   }
   return -1;