From 5812a26eeb8928f34eadc5c5dfca74563a824cd0 Mon Sep 17 00:00:00 2001
From: Patrick Gauvin <gauvin@hcs.ufl.edu>
Date: Sun, 26 Jun 2016 13:06:07 -0400
Subject: Update dlerror usage

Handles possible NULL return value

Updates #2747
---
 cpukit/libdl/dlfcn-shell.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

(limited to 'cpukit')

diff --git a/cpukit/libdl/dlfcn-shell.c b/cpukit/libdl/dlfcn-shell.c
index 3746711ef1..12c737abb6 100644
--- a/cpukit/libdl/dlfcn-shell.c
+++ b/cpukit/libdl/dlfcn-shell.c
@@ -38,7 +38,8 @@ convert_ascii_to_voidp (const char* arg)
 int
 shell_dlopen (int argc, char* argv[])
 {
-  int arg;
+  int   arg;
+  char *err;
   for (arg = 1; arg < argc; arg++)
   {
     void* handle = dlopen (argv[arg], RTLD_NOW | RTLD_GLOBAL);
@@ -53,7 +54,10 @@ shell_dlopen (int argc, char* argv[])
       printf ("handle: %p %s\n", handle, message);
     }
     else
-      printf ("error: %s\n", dlerror ());
+    {
+      err = dlerror ();
+      printf ("error: %s\n", err ? err : "");
+    }
   }
   return 0;
 }
-- 
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