From b9c33df5fb3e621c641045ac90c211d33e2bf983 Mon Sep 17 00:00:00 2001
From: Ben Pfaff <blp@gnu.org>
Date: Wed, 10 Feb 2010 20:19:44 -0800
Subject: [PATCH] moments: Fix null pointer dereference in calc_moments().

Found by Clang (http://clang-analyzer.llvm.org).
---
 src/math/moments.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/math/moments.c b/src/math/moments.c
index d129f6ab03..545c964439 100644
--- a/src/math/moments.c
+++ b/src/math/moments.c
@@ -1,5 +1,5 @@
 /* PSPP - a program for statistical analysis.
-   Copyright (C) 1997-9, 2000 Free Software Foundation, Inc.
+   Copyright (C) 1997-9, 2000, 2010 Free Software Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -49,7 +49,7 @@ calc_moments (enum moment max_moment,
 
       /* From _SPSS Statistical Algorithms, 2nd ed.,
          0-918469-89-9, section "DESCRIPTIVES". */
-      if (fabs (*variance) >= 1e-20)
+      if (fabs (s2) >= 1e-20)
         {
           if (max_moment >= MOMENT_SKEWNESS && skewness != NULL && w > 2.)
             {
-- 
2.30.2