From e17f932eecb7b8cf842128a6815dc0159d8a5da8 Mon Sep 17 00:00:00 2001
From: Deev Patel <pateldeev@nevada.unr.edu>
Date: Sat, 7 Oct 2023 06:35:52 -0700
Subject: [PATCH] fix: annotate static variable in VLOG_IS_ON (#890)

Avoid TSAN issues when multiple threads perform the check.
---
 src/glog/vlog_is_on.h.in | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/glog/vlog_is_on.h.in b/src/glog/vlog_is_on.h.in
index 15dee61..eacc6de 100644
--- a/src/glog/vlog_is_on.h.in
+++ b/src/glog/vlog_is_on.h.in
@@ -75,6 +75,8 @@
 #define VLOG_IS_ON(verboselevel)                                \
   __extension__  \
   ({ static @ac_google_namespace@::SiteFlag vlocal__ = {NULL, NULL, 0, NULL};       \
+     GLOG_IFDEF_THREAD_SANITIZER( \
+             AnnotateBenignRaceSized(__FILE__, __LINE__, &vlocal__, sizeof(@ac_google_namespace@::SiteFlag), "")); \
      @ac_google_namespace@::int32 verbose_level__ = (verboselevel);                    \
      (vlocal__.level == NULL ? @ac_google_namespace@::InitVLOG3__(&vlocal__, &FLAGS_v, \
                         __FILE__, verbose_level__) : *vlocal__.level >= verbose_level__); \