From 9931667547e2eda9911ec07b0f408b1a04b8a46c Mon Sep 17 00:00:00 2001
From: 罗泽轩 <spacewanderlzx@gmail.com>
Date: Fri, 7 Dec 2018 17:17:38 +0800
Subject: bugfix: we now only apply the lightuserdata mask on platforms that
 are at least 64bits.

---
 lua_cjson.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lua_cjson.c b/lua_cjson.c
index 9de3f5a..2a69699 100644
--- a/lua_cjson.c
+++ b/lua_cjson.c
@@ -93,9 +93,14 @@
 #define strcasecmp _stricmp
 #endif
 
+#if LONG_MAX > ((1UL << 31) - 1)
 #define json_lightudata_mask(ludata)                                         \
     ((void *) ((uintptr_t) (ludata) & ((1UL << 47) - 1)))
 
+#else
+#define json_lightudata_mask(ludata)    (ludata)
+#endif
+
 static const char * const *json_empty_array;
 static const char * const *json_array;
 
-- 
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