From: Ivan Maidanski <ivmai@mail.ru>
Date: Mon, 29 Feb 2016 21:41:39 +0000 (+0300)
Subject: Fix unchecked pointer dereference in check_ints (gctest)
X-Git-Tag: gc7_4_4~23
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=fa95d3c9b6d1e814b217df475cb0a5bedb8a01e8;p=gc

Fix unchecked pointer dereference in check_ints (gctest)

* tests/test.c (check_ints): Fail (with the appropriate message) if
"list" argument is nil.
---

diff --git a/tests/test.c b/tests/test.c
index c1a7da39..5b8bacd0 100644
--- a/tests/test.c
+++ b/tests/test.c
@@ -412,6 +412,10 @@ sexpr uncollectable_ints(int low, int up)
 
 void check_ints(sexpr list, int low, int up)
 {
+    if (is_nil(list)) {
+        GC_printf("list is nil\n");
+        FAIL;
+    }
     if (SEXPR_TO_INT(car(car(list))) != low) {
         GC_printf(
            "List reversal produced incorrect list - collector is broken\n");