From 8cc6e67c16211c3ef6b13ee3694af649dba1f60d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20Ekl=C3=B6f?= <daniel@ekloef.se>
Date: Sat, 4 May 2019 11:26:27 +0200
Subject: [PATCH] main: check return value of write()

Fixes build with -D_FORTIFY_SOURCE=2
---
 main.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/main.c b/main.c
index 28d996a..927b586 100644
--- a/main.c
+++ b/main.c
@@ -179,7 +179,8 @@ main(int argc, const char *const *argv)
         LOG_INFO("aborted: %s (%d)", strsignal(aborted), aborted);
 
     /* Signal abort to other threads */
-    write(abort_fd, &(uint64_t){1}, sizeof(uint64_t));
+    if (write(abort_fd, &(uint64_t){1}, sizeof(uint64_t)) != sizeof(uint64_t))
+        LOG_ERRNO("failed to signal abort to threads");
 
     int res;
     int r = thrd_join(bar_thread, &res);