libdl: dlerror return NULL when no error

Updates #2747
2016-06-26 12:47:28 -04:00
parent a2a9751823
commit a346408e4e
1 changed files with 2 additions and 0 deletions
--- a/cpukit/libdl/dlfcn.c
+++ b/cpukit/libdl/dlfcn.c
@@ -132,6 +132,8 @@ dlerror (void)
  static char msg[64];
  rtems_rtl_get_error (msg, sizeof (msg));
  rtems_rtl_clear_error ();
+  if (msg[0] == '\0')
+    return NULL;
  return msg;
 }