From a32dbfd28edef3c909856705db8ddc5e3222acdb Mon Sep 17 00:00:00 2001
From: Evgeniy Stepanov <eugeni.stepanov@gmail.com>
Date: Mon, 16 Feb 2015 15:05:14 +0000
Subject: [msan] Fix UnalignedLoad/UnalignedStore tests.

Add alignment attrubutes to ensure that the tests actually test unaligned
access irrespective of the stack layout.


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@229398 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/msan/tests/msan_test.cc | 17 ++++++++---------
 1 file changed, 8 insertions(+), 9 deletions(-)

(limited to 'lib/msan/tests')

diff --git a/lib/msan/tests/msan_test.cc b/lib/msan/tests/msan_test.cc
index 5e578ab7c..2aa6ecc20 100644
--- a/lib/msan/tests/msan_test.cc
+++ b/lib/msan/tests/msan_test.cc
@@ -3522,7 +3522,7 @@ TEST(MemorySanitizer, VolatileBitfield) {
 }
 
 TEST(MemorySanitizer, UnalignedLoad) {
-  char x[32];
+  char x[32] __attribute__((aligned(8)));
   U4 origin = __LINE__;
   for (unsigned i = 0; i < sizeof(x) / 4; ++i)
     __msan_set_origin(x + 4 * i, 4, origin + i);
@@ -3556,7 +3556,7 @@ TEST(MemorySanitizer, UnalignedLoad) {
 }
 
 TEST(MemorySanitizer, UnalignedStore16) {
-  char x[5];
+  char x[5] __attribute__((aligned(4)));
   U2 y2 = 0;
   U4 origin = __LINE__;
   __msan_poison(&y2, 1);
@@ -3567,11 +3567,10 @@ TEST(MemorySanitizer, UnalignedStore16) {
   EXPECT_POISONED_O(x[1], origin);
   EXPECT_NOT_POISONED(x[2]);
   EXPECT_POISONED_O(x[3], origin);
-  EXPECT_POISONED_O(x[4], origin);
 }
 
 TEST(MemorySanitizer, UnalignedStore32) {
-  char x[8];
+  char x[8] __attribute__((aligned(4)));
   U4 y4 = 0;
   U4 origin = __LINE__;
   __msan_poison(&y4, 2);
@@ -3589,7 +3588,7 @@ TEST(MemorySanitizer, UnalignedStore32) {
 }
 
 TEST(MemorySanitizer, UnalignedStore64) {
-  char x[16];
+  char x[16] __attribute__((aligned(8)));
   U8 y8 = 0;
   U4 origin = __LINE__;
   __msan_poison(&y8, 3);
@@ -3612,7 +3611,7 @@ TEST(MemorySanitizer, UnalignedStore64) {
 }
 
 TEST(MemorySanitizer, UnalignedStore16_precise) {
-  char x[8];
+  char x[8] __attribute__((aligned(4)));
   U2 y = 0;
   U4 originx1 = __LINE__;
   U4 originx2 = __LINE__;
@@ -3635,7 +3634,7 @@ TEST(MemorySanitizer, UnalignedStore16_precise) {
 }
 
 TEST(MemorySanitizer, UnalignedStore16_precise2) {
-  char x[8];
+  char x[8] __attribute__((aligned(4)));
   U2 y = 0;
   U4 originx1 = __LINE__;
   U4 originx2 = __LINE__;
@@ -3658,7 +3657,7 @@ TEST(MemorySanitizer, UnalignedStore16_precise2) {
 }
 
 TEST(MemorySanitizer, UnalignedStore64_precise) {
-  char x[12];
+  char x[12] __attribute__((aligned(8)));
   U8 y = 0;
   U4 originx1 = __LINE__;
   U4 originx2 = __LINE__;
@@ -3690,7 +3689,7 @@ TEST(MemorySanitizer, UnalignedStore64_precise) {
 }
 
 TEST(MemorySanitizer, UnalignedStore64_precise2) {
-  char x[12];
+  char x[12] __attribute__((aligned(8)));
   U8 y = 0;
   U4 originx1 = __LINE__;
   U4 originx2 = __LINE__;
-- 
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