From d1d973be1214985221526bcaeb4d3fe7a02fd2f8 Mon Sep 17 00:00:00 2001
From: Christopher Ferris <cferris@google.com>
Date: Wed, 19 Jun 2019 18:41:37 -0700
Subject: [PATCH] Fix potential race condition.

Found when I noticed that the unit tests segfaulted every once in a while.

Test: Ran all unit tests 1000 times. The crash usually happens before 100 runs.
Change-Id: I1c8d2e3637400dc80f273f3677f4c94b0dbeac9d
---
 libunwindstack/MapInfo.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libunwindstack/MapInfo.cpp b/libunwindstack/MapInfo.cpp
index 1c0f1e611..5b30a4d7b 100644
--- a/libunwindstack/MapInfo.cpp
+++ b/libunwindstack/MapInfo.cpp
@@ -300,7 +300,7 @@ MapInfo::~MapInfo() {
 
 std::string MapInfo::GetBuildID() {
   uintptr_t id = build_id.load();
-  if (build_id != 0) {
+  if (id != 0) {
     return *reinterpret_cast<std::string*>(id);
   }