1 files changed, 4 insertions, 1 deletions
diff --git a/gdb/cli/cli-decode.h b/gdb/cli/cli-decode.h
index 1692a6e..241535a 100644
--- a/gdb/cli/cli-decode.h
+++ b/gdb/cli/cli-decode.h
@@ -94,7 +94,10 @@ struct cmd_list_element
   { return this->func == nullptr; }
 
   void set_context (void *context)
-  { m_context = context; }
+  {
+    gdb_assert (m_context == nullptr);
+    m_context = context;
+  }
 
   void *context () const
   { return m_context; }