From 121798fdb5561bc8e9c6a56d18a7edc7b7d2d53d Mon Sep 17 00:00:00 2001
From: Vitaly Buka <vitalybuka@google.com>
Date: Wed, 6 Jul 2022 18:39:52 -0700
Subject: [PATCH] [sanitizer] Fix dn_expand test

res is not the size of expanded string.
---
 compiler-rt/test/msan/Linux/dn_expand.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/compiler-rt/test/msan/Linux/dn_expand.cpp b/compiler-rt/test/msan/Linux/dn_expand.cpp
index a7b2b37562ed..79399bf22c23 100644
--- a/compiler-rt/test/msan/Linux/dn_expand.cpp
+++ b/compiler-rt/test/msan/Linux/dn_expand.cpp
@@ -17,7 +17,8 @@ void testWrite() {
                       sizeof(output));
 
   assert(res >= 0);
-  __msan_check_mem_is_initialized(output, res);
+  assert(strlen(output) == 11);
+  __msan_check_mem_is_initialized(output, strlen(output) + 1);
 }
 
 void testWriteZeroLength() {
@@ -31,6 +32,8 @@ void testWriteZeroLength() {
                       sizeof(output));
 
   assert(res >= 0);
+  assert(strlen(output) == 0);
+  __msan_check_mem_is_initialized(output, strlen(output) + 1);
   __msan_check_mem_is_initialized(output, res);
 }