From 4a370a19525247139f6eba24bc2fafe250726bf5 Mon Sep 17 00:00:00 2001
From: Florian Engelhardt <florian.engelhardt@datadoghq.com>
Date: Wed, 3 Jun 2026 10:53:05 +0200
Subject: [PATCH] fix: use atomic_store for writer->headers assignment

writer->headers is declared _Atomic but was stored via a plain
non-atomic assignment in dd_curl_set_headers, while dd_curl_reset_headers
reads it with atomic_exchange. Use atomic_store to match.
---
 tracer/coms.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tracer/coms.c b/tracer/coms.c
index 04354303c5..c0536926d4 100644
--- a/tracer/coms.c
+++ b/tracer/coms.c
@@ -956,7 +956,7 @@ static void dd_curl_set_headers(struct _writer_loop_data_t *writer, size_t trace
     dd_curl_reset_headers(writer);
 
     curl_easy_setopt(writer->curl, CURLOPT_HTTPHEADER, headers);
-    writer->headers = headers;
+    atomic_store(&writer->headers, headers);
 }
 
 static size_t dd_curl_writefunc(char *ptr, size_t size, size_t nmemb, void *s) {