From ce68c19ee7fc27eea1b1a0abbfab316d93876ed4 Mon Sep 17 00:00:00 2001
From: Benjamin Peterson <benjamin@python.org>
Date: Sat, 15 Mar 2014 11:49:49 -0500
Subject: [PATCH 1/2] remove unused zero constants

---
 Modules/_decimal/_decimal.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/Modules/_decimal/_decimal.c b/Modules/_decimal/_decimal.c
index ac20308953a..ea5253efb67 100644
--- a/Modules/_decimal/_decimal.c
+++ b/Modules/_decimal/_decimal.c
@@ -3928,9 +3928,6 @@ nm_mpd_qdivmod(PyObject *v, PyObject *w)
     return ret;
 }
 
-static mpd_uint_t data_zero[1] = {0};
-static const mpd_t zero = {MPD_STATIC|MPD_CONST_DATA, 0, 1, 1, 1, data_zero};
-
 static PyObject *
 nm_mpd_qpow(PyObject *base, PyObject *exp, PyObject *mod)
 {

From c77e7a4f233453a4e39fc7f61c72e6ef3877dcd1 Mon Sep 17 00:00:00 2001
From: Benjamin Peterson <benjamin@python.org>
Date: Sat, 15 Mar 2014 11:50:00 -0500
Subject: [PATCH 2/2] only define zero constant when it is used

---
 Modules/_math.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Modules/_math.c b/Modules/_math.c
index fe75a36ec51..a14ff0605f4 100644
--- a/Modules/_math.c
+++ b/Modules/_math.c
@@ -22,7 +22,9 @@
 static const double ln2 = 6.93147180559945286227E-01;
 static const double two_pow_m28 = 3.7252902984619141E-09; /* 2**-28 */
 static const double two_pow_p28 = 268435456.0; /* 2**28 */
+#ifndef Py_NAN
 static const double zero = 0.0;
+#endif
 
 /* acosh(x)
  * Method :