From: Ivan Maidanski <ivmai@mail.ru>
Date: Tue, 14 Mar 2017 22:58:41 +0000 (+0300)
Subject: Fix GC_SIZE_MAX definition (Linux/musl-gcc)
X-Git-Tag: v7.4.6~138
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=17a2e7f574db97672577270cef7f7f2cccab60aa;p=gc

Fix GC_SIZE_MAX definition (Linux/musl-gcc)
(Cherry-pick commit f40fab8 from 'release-7_6' branch.)

* include/private/gc_priv.h [SIZE_MAX] (GC_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/include/private/gc_priv.h b/include/private/gc_priv.h
index 38403379..38eba595 100644
--- a/include/private/gc_priv.h
+++ b/include/private/gc_priv.h
@@ -94,7 +94,8 @@ typedef char * ptr_t;   /* A generic pointer to which we can add        */
 # include <limits.h>
 #endif
 #ifdef SIZE_MAX
-# define GC_SIZE_MAX SIZE_MAX
+# define GC_SIZE_MAX ((size_t)SIZE_MAX)
+            /* Extra cast to workaround some buggy SIZE_MAX definitions. */
 #else
 # define GC_SIZE_MAX (~(size_t)0)
 #endif