1 files changed, 6 insertions, 0 deletions

diff --git a/test/data/emacs-module/mod-test.c b/test/data/emacs-module/mod-test.c
index fc29a0d6b9a..f378db00cd4 100644
--- a/test/data/emacs-module/mod-test.c
+++ b/test/data/emacs-module/mod-test.c
@@ -264,8 +264,14 @@ bind_function (emacs_env *env, const char *name, emacs_value Sfun)
 int
 emacs_module_init (struct emacs_runtime *ert)
 {
+  if (ert->size < sizeof *ert)
+    return 1;
+
   emacs_env *env = ert->get_environment (ert);
 
+  if (env->size <= sizeof *env)
+    return 2;
+
 #define DEFUN(lsym, csym, amin, amax, doc, data) \
   bind_function (env, lsym, \
                  env->make_function (env, amin, amax, csym, doc, data))