Fix buffer overflow in avx256-unaligned-{load|store}-7.c

	* testsuite/63305
	* gcc.target/i386/avx256-unaligned-load-7.c (avx_test): Fix
	buffer overflow.
	* gcc.target/i386/avx256-unaligned-store-7.c (avx_test): Likewise.

From-SVN: r217267

gcc/testsuite/ChangeLog

+2014-11-09  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* testsuite/63305
+	* gcc.target/i386/avx256-unaligned-load-7.c (avx_test): Fix
+	buffer overflow.
+	* gcc.target/i386/avx256-unaligned-store-7.c (avx_test): Likewise.
+
 2014-11-09  Andreas Schwab  <schwab@linux-m68k.org>
 
 	* gcc.target/powerpc/pr51623.c: Fix implicit declarations.

gcc/testsuite/gcc.target/i386/avx256-unaligned-load-7.c

@@ -34,7 +34,7 @@ avx_test (void)
   cp = mp;
   dp = lp;
 
-  for (i = N; i >= 0; i--)
+  for (i = N; i > 0; i--)
     {
       *cp++ = str;
       *dp++ = str;
@@ -45,13 +45,13 @@ avx_test (void)
   cp = mp;
   dp = lp;
 
-  for (i = N; i >= 0; i--)
+  for (i = N; i > 0; i--)
     {
       *ap++ = *cp++;
       *bp++ = *dp++;
     }
 
-  for (i = N; i >= 0; i--)
+  for (i = N; i > 0; i--)
     {
       if (strcmp (*--ap, "STR") != 0)
 	abort ();

gcc/testsuite/gcc.target/i386/avx256-unaligned-store-7.c

@@ -30,13 +30,13 @@ avx_test (void)
   ap = ep;
   bp = fp;
 
-  for (i = N; i >= 0; i--)
+  for (i = N; i > 0; i--)
     {
       *ap++ = str;
       *bp++ = str;
     }
 
-  for (i = N; i >= 0; i--)
+  for (i = N; i > 0; i--)
     {
       if (strcmp (*--ap, "STR") != 0)
 	abort ();