From: Phil Carmody <phil@dovecot.fi>
Date: Mon, 5 Dec 2016 15:29:08 +0000 (+0200)
Subject: lib/macros.h - protect old compilers from use of modern features
X-Git-Tag: 2.3.0.rc1~2467
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=dc38a5b101102ec57da9e25e6b80561ead3f54f8;p=thirdparty%2Fdovecot%2Fcore.git

lib/macros.h - protect old compilers from use of modern features

no_sanitize(integer) is not in 3.5 (debian stable's version), but is
documented in 3.9. Exactly when it appeared isn't immediately obvious.

Signed-off-by: Phil Carmody <phil@dovecot.fi>
---

diff --git a/src/lib/macros.h b/src/lib/macros.h
index adfaea9118..c585489a4d 100644
--- a/src/lib/macros.h
+++ b/src/lib/macros.h
@@ -184,7 +184,7 @@
 #  define likely(expr) expr
 #endif
 
-#if defined(__clang__)
+#if defined(__clang__) && ((__clang_major__ > 4) || (__clang_major__ == 3 && __clang_minor__ >= 9))
 #  define ATTR_UNSIGNED_WRAPS __attribute__((no_sanitize("integer")))
 #else
 #  define ATTR_UNSIGNED_WRAPS