From ad717d4bba7b76cb5de8617d951277a9ebfed184 Mon Sep 17 00:00:00 2001
From: Jan Nieuwenhuizen <janneke@gnu.org>
Date: Sun, 30 Oct 2016 15:42:50 +0100
Subject: [PATCH] More error handling on apply_env.

* mes.c (apply_env): Assert if applying *unspecified*.
---
 mes.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/mes.c b/mes.c
index 19ffbfda..cfd834d1 100644
--- a/mes.c
+++ b/mes.c
@@ -382,6 +382,7 @@ apply_env (scm *fn, scm *x, scm *a)
   if (efn == &scm_f || efn == &scm_t) assert (!"apply bool");
   if (efn->type == NUMBER) assert (!"apply number");
   if (efn->type == STRING) assert (!"apply string");
+  if (efn == &scm_unspecified) assert (!"apply *unspecified*");
   return apply_env (efn, x, a);
 }