Fix code and update tests

Author: sffc

json_tokener.c

@@ -145,8 +145,8 @@ enum json_tokener_error json_tokener_get_error(struct json_tokener *tok)
 }
 
 /* Stuff for decoding unicode sequences */
-#define IS_HIGH_SURROGATE(uc) (((uc)&0xFC00) == 0xD800)
-#define IS_LOW_SURROGATE(uc) (((uc)&0xFC00) == 0xDC00)
+#define IS_HIGH_SURROGATE(uc) (((uc)&0xFFFFFC00) == 0xD800)
+#define IS_LOW_SURROGATE(uc) (((uc)&0xFFFFFC00) == 0xDC00)
 #define DECODE_SURROGATE_PAIR(hi, lo) ((((hi)&0x3FF) << 10) + ((lo)&0x3FF) + 0x10000)
 static unsigned char utf8_replacement_char[3] = {0xEF, 0xBF, 0xBD};
 

tests/test_parse.expected

@@ -14,7 +14,7 @@ new_obj.to_string("\ud840")="�"
 new_obj.to_string("\udd27")="�"
 new_obj.to_string([9,'\uDAD)=null
 new_obj.to_string("[9,'\uDAD")=null
-new_obj.to_string("\uD836\uDE87")="�"
+new_obj.to_string("\uD836\uDE87")="𝪇"
 new_obj.to_string(null)=null
 new_obj.to_string(NaN)=NaN
 new_obj.to_string(-NaN)=null
@@ -142,7 +142,7 @@ json_tokener_parse_ex(tok, { "foo      ,   6) ... OK: got correct error: continu
 json_tokener_parse_ex(tok, : "bar"}    ,   8) ... OK: got correct error: unexpected character
 json_tokener_parse_ex(tok, "\uD836     ,   7) ... OK: got correct error: continue
 json_tokener_parse_ex(tok, \uDE87      ,   6) ... OK: got correct error: continue
-json_tokener_parse_ex(tok, "           ,   1) ... OK: got object of type [string]: "�"
+json_tokener_parse_ex(tok, "           ,   1) ... OK: got object of type [string]: "𝪇"
 json_tokener_parse_ex(tok, { "foo      ,   6) ... OK: got correct error: continue
 json_tokener_parse_ex(tok, ": {"bar    ,   8) ... OK: got correct error: continue
 json_tokener_parse_ex(tok, ":13}}XXXX  ,  10) ... OK: got object of type [object]: { "foo": { "bar": 13 } }