From: David Carlier <devnexen@gmail.com>
Date: Thu, 11 Jan 2018 14:20:43 +0000 (+0000)
Subject: BUILD/MINOR: ancient gcc versions atomic fix
X-Git-Tag: v1.9-dev1~520
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=ec5e84552a0a2e0767431731c4f40d5627dc7bdd;p=thirdparty%2Fhaproxy.git

BUILD/MINOR: ancient gcc versions atomic fix

Commit 1a69af6d3892fe1946bb8babb3044d2d26afd46e introduced code
for atomic prior to 4.7. Unfortunately clang uses as well those
constants which is misleading.
---

diff --git a/include/common/hathreads.h b/include/common/hathreads.h
index 503abbec31..5f0b969544 100644
--- a/include/common/hathreads.h
+++ b/include/common/hathreads.h
@@ -100,7 +100,7 @@ extern THREAD_LOCAL unsigned long tid_bit; /* The bit corresponding to the threa
 /* TODO: thread: For now, we rely on GCC builtins but it could be a good idea to
  * have a header file regrouping all functions dealing with threads. */
 
-#if defined(__GNUC__) && (__GNUC__ < 4 || __GNUC__ == 4 && __GNUC_MINOR__ < 7)
+#if defined(__GNUC__) && (__GNUC__ < 4 || __GNUC__ == 4 && __GNUC_MINOR__ < 7) && !defined(__clang__)
 /* gcc < 4.7 */
 
 #define HA_ATOMIC_ADD(val, i)        __sync_add_and_fetch(val, i)