From e46aad0c3571bd5f9da4cd4544fa3d6201dc3890 Mon Sep 17 00:00:00 2001
From: Ludovic Rousseau <ludovic.rousseau@free.fr>
Date: Sun, 12 Dec 2021 15:25:32 +0100
Subject: [PATCH] pcscdaemon.c: Fix data race for AraKiri variable

Issue reported by clang ThreadSanitizer

WARNING: ThreadSanitizer: data race (pid=14419)
  Read of size 1 at 0x000000f3a9c8 by main thread:
    #0 SVCServiceRunLoop <null> (pcscd+0x4c0da9)
    #1 main <null> (pcscd+0x4c0694)

  Previous write of size 1 at 0x000000f3a9c8 by thread T1:
    #0 signal_thread <null> (pcscd+0x4c0aca)

  As if synchronized via sleep:
    #0 nanosleep <null> (pcscd+0x4297dd)
    #1 SYS_USleep <null> (pcscd+0x4c6c36)
    #2 SVCServiceRunLoop <null> (pcscd+0x4c0cef)
    #3 main <null> (pcscd+0x4c0694)

  Location is global 'AraKiri' of size 1 at 0x000000f3a9c8 (pcscd+0x000000f3a9c8)

  Thread T1 (tid=14421, running) created by main thread at:
    #0 pthread_create <null> (pcscd+0x42be9b)
    #1 main <null> (pcscd+0x4c01c8)

SUMMARY: ThreadSanitizer: data race (/home/rousseau/sc/costa/PCSC/src/pcscd+0x4c0da9) in SVCServiceRunLoop
---
 src/pcscdaemon.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/pcscdaemon.c b/src/pcscdaemon.c
index 2cc3fc0..2c4e305 100644
--- a/src/pcscdaemon.c
+++ b/src/pcscdaemon.c
@@ -75,7 +75,7 @@ THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #define FALSE 0
 #endif
 
-char AraKiri = FALSE;
+_Atomic char AraKiri = FALSE;
 static char Init = TRUE;
 char AutoExit = FALSE;
 char SocketActivated = FALSE;
-- 
2.33.0