File 0001-src-resolve-strict-aliasing-violation-in-ndbm.cc.patch of Package singular

From 32d544c08aef0445d878dff8b37cf0c13dd8c8bf Mon Sep 17 00:00:00 2001
From: Jan Engelhardt <jengelh@inai.de>
Date: Mon, 2 Jan 2012 13:01:03 +0100
Subject: [PATCH] src: resolve strict-aliasing violation in ndbm.cc
References: https://github.com/Singular/Singular/pull/1148

gcc-4.6 warned:
ndbm.cc: In function 'datum dbm_nextkey(DBM*)':
ndbm.cc:294:36: warning: dereferencing type-punned pointer will break
strict-aliasing rules [-Wstrict-aliasing]
---
 Singular/links/ndbm.cc | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Singular/links/ndbm.cc b/Singular/links/ndbm.cc
index 01f1f093b..1d40e0f4e 100644
--- a/Singular/links/ndbm.cc
+++ b/Singular/links/ndbm.cc
@@ -280,7 +280,9 @@ datum dbm_nextkey(DBM *db)
         db->dbm_flags |= _DBM_IOERR;
 #endif
     }
-    if (((short *)db->dbm_pagbuf)[0] != 0)
+    short tmp;
+    memcpy(&tmp, db->dbm_pagbuf, sizeof(tmp));
+    if (tmp != 0)
     {
       item = makdatum(db->dbm_pagbuf, db->dbm_keyptr);
       if (item.dptr != NULL)
-- 
2.37.1