File zlib-1.2.12-fix-invalid-memory-access-on-ppc-and-ppc64.patch of Package zlib

From 11b722e4ae91b611f605221587ec8e0829c27949 Mon Sep 17 00:00:00 2001
From: Matheus Castanho <msc@linux.ibm.com>
Date: Tue, 23 Jun 2020 10:26:19 -0300
Subject: [PATCH] Fix invalid memory access on ppc and ppc64

---
 contrib/power/adler32_power8.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/contrib/power/adler32_power8.c b/contrib/power/adler32_power8.c
index 473c39457..fdd086453 100644
--- a/contrib/power/adler32_power8.c
+++ b/contrib/power/adler32_power8.c
@@ -110,16 +110,15 @@ uLong ZLIB_INTERNAL _adler32_power8 (uLong adler, const Bytef* buf, uInt len)
            6, 5, 4, 3, 2, 1};
       const vector unsigned char vsh = vec_splat_u8(4);
       const vector unsigned int vmask = {0xffffffff, 0x0, 0x0, 0x0};
-      vector unsigned int vs1 = vec_xl(0, &s1);
-      vector unsigned int vs2 = vec_xl(0, &s2);
+      vector unsigned int vs1 = { 0 };
+      vector unsigned int vs2 = { 0 };
       vector unsigned int vs1_save = { 0 };
       vector unsigned int vsum1, vsum2;
       vector unsigned char vbuf;
       int n;
 
-      /* Zeros the undefined values of vectors vs1, vs2.  */
-      vs1 = vec_and(vs1, vmask);
-      vs2 = vec_and(vs2, vmask);
+      vs1[0] = s1;
+      vs2[0] = s2;
 
       /* Do length bigger than NMAX in blocks of NMAX size.  */
       while (len >= NMAX) {