From: Ivan Maidanski <ivmai@mail.ru>
Date: Wed, 15 Mar 2017 08:27:48 +0000 (+0300)
Subject: Fix AO_SIZE_MAX definition (Linux/musl-gcc)
X-Git-Tag: v7.6.0~54
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=7a99c0f;p=libatomic_ops

Fix AO_SIZE_MAX definition (Linux/musl-gcc)
(fix commit b1365bd)

* src/atomic_ops_malloc.c [SIZE_MAX && !CPPCHECK] (AO_SIZE_MAX): Cast
SIZE_MAX to size_t explicitly (to workaround incorrect definition
of SIZE_MAX - e.g. it is defined as ~0ULL in musl-tools which is not
correct for a 32-bit target).
---

diff --git a/src/atomic_ops_malloc.c b/src/atomic_ops_malloc.c
index 77faa4e..8f0a274 100644
--- a/src/atomic_ops_malloc.c
+++ b/src/atomic_ops_malloc.c
@@ -141,7 +141,8 @@ static char *get_mmaped(size_t sz)
 # include <limits.h>
 #endif
 #if defined(SIZE_MAX) && !defined(CPPCHECK)
-# define AO_SIZE_MAX SIZE_MAX
+# define AO_SIZE_MAX ((size_t)SIZE_MAX)
+            /* Extra cast to workaround some buggy SIZE_MAX definitions. */
 #else
 # define AO_SIZE_MAX (~(size_t)0)
 #endif