test_passing_unions.c: Avoid undefined array access.

2012-04-18  Richard Guenther  <rguenther@suse.de>

	* gcc.target/x86_64/abi/test_passing_unions.c: Avoid undefined
	array access.
	* gcc.target/x86_64/abi/test_passing_structs.c: Likewise.
	* gcc.target/i386/avx256-unaligned-load-4.c: Fix array sizes.

From-SVN: r186561

gcc/testsuite/ChangeLog

+2012-04-18  Richard Guenther  <rguenther@suse.de>
+
+	* gcc.target/x86_64/abi/test_passing_unions.c: Avoid undefined
+	array access.
+	* gcc.target/x86_64/abi/test_passing_structs.c: Likewise.
+	* gcc.target/i386/avx256-unaligned-load-4.c: Fix array sizes.
+
 2012-04-17  Tom de Vries  <tom@codesourcery.com>
 
 	* g++.dg/pr51264-4.C: New test.

gcc/testsuite/gcc.target/i386/avx256-unaligned-load-4.c

@@ -3,7 +3,7 @@
 
 #define N 1024
 
-float a[N], b[N+3];
+float a[N+3], b[N];
 
 void
 avx_test (void)

gcc/testsuite/gcc.target/x86_64/abi/test_passing_structs.c

@@ -216,7 +216,7 @@ main (void)
   for (i = 0; i < 8; i++)
     {
       m128s[i].x = (__m128){32+i, 0, i, 0};
-      fregs.xmm0._m128[i] = m128s[i].x;
+      (&fregs.xmm0)[i]._m128[0] = m128s[i].x;
     }
   num_fregs = 8;
   clear_float_hardware_registers;

gcc/testsuite/gcc.target/x86_64/abi/test_passing_unions.c

@@ -206,7 +206,7 @@ main (void)
   for (i = 0; i < 8; i++)
     {
       u4[i].x = (__m128){32+i, 0, i, 0};
-      fregs.xmm0._m128[i] = u4[i].x;
+      (&fregs.xmm0)[i]._m128[0] = u4[i].x;
     }
   num_fregs = 8;
   clear_float_hardware_registers;