Backport ruby core changes

ext/json/ext/generator/generator.c

@@ -15,7 +15,7 @@ static VALUE mJSON, mExt, mGenerator, cState, mGeneratorMethods, mObject,
 #endif
              mFloat, mString, mString_Extend,
              mTrueClass, mFalseClass, mNilClass, eGeneratorError,
-             eNestingError, CRegexp_MULTILINE, CJSON_SAFE_STATE_PROTOTYPE,
+             eNestingError,
              i_SAFE_STATE_PROTOTYPE;
 
 static ID i_to_s, i_to_json, i_new, i_indent, i_space, i_space_before,
@@ -696,7 +696,7 @@ static VALUE cState_aref(VALUE self, VALUE name)
     if (RTEST(rb_funcall(self, i_respond_to_p, 1, name))) {
         return rb_funcall(self, i_send, 1, name);
     } else {
-        return rb_ivar_get(self, rb_intern_str(rb_str_concat(rb_str_new2("@"), name)));
+        return rb_attr_get(self, rb_intern_str(rb_str_concat(rb_str_new2("@"), name)));
     }
 }
 
@@ -846,11 +846,20 @@ static void generate_json_array(FBuffer *buffer, VALUE Vstate, JSON_Generator_St
     fbuffer_append_char(buffer, ']');
 }
 
+#ifdef HAVE_RUBY_ENCODING_H
+static int enc_utf8_compatible_p(rb_encoding *enc)
+{
+    if (enc == rb_usascii_encoding()) return 1;
+    if (enc == rb_utf8_encoding()) return 1;
+    return 0;
+}
+#endif
+
 static void generate_json_string(FBuffer *buffer, VALUE Vstate, JSON_Generator_State *state, VALUE obj)
 {
     fbuffer_append_char(buffer, '"');
 #ifdef HAVE_RUBY_ENCODING_H
-    if (!rb_enc_str_asciicompat_p(obj)) {
+    if (!enc_utf8_compatible_p(rb_enc_get(obj))) {
         obj = rb_str_encode(obj, CEncoding_UTF_8, 0, Qnil);
     }
 #endif
@@ -1073,10 +1082,8 @@ static VALUE cState_from_state_s(VALUE self, VALUE opts)
     } else if (rb_obj_is_kind_of(opts, rb_cHash)) {
         return rb_funcall(self, i_new, 1, opts);
     } else {
-        if (NIL_P(CJSON_SAFE_STATE_PROTOTYPE)) {
-            CJSON_SAFE_STATE_PROTOTYPE = rb_const_get(mJSON, i_SAFE_STATE_PROTOTYPE);
-        }
-        return rb_funcall(CJSON_SAFE_STATE_PROTOTYPE, i_dup, 0);
+        VALUE prototype = rb_const_get(mJSON, i_SAFE_STATE_PROTOTYPE);
+        return rb_funcall(prototype, i_dup, 0);
     }
 }
 
@@ -1392,6 +1399,8 @@ void Init_generator(void)
 
     eGeneratorError = rb_path2class("JSON::GeneratorError");
     eNestingError = rb_path2class("JSON::NestingError");
+    rb_gc_register_mark_object(eGeneratorError);
+    rb_gc_register_mark_object(eNestingError);
 
     cState = rb_define_class_under(mGenerator, "State", rb_cObject);
     rb_define_alloc_func(cState, cState_s_allocate);
@@ -1457,7 +1466,6 @@ void Init_generator(void)
     mNilClass = rb_define_module_under(mGeneratorMethods, "NilClass");
     rb_define_method(mNilClass, "to_json", mNilClass_to_json, -1);
 
-    CRegexp_MULTILINE = rb_const_get(rb_cRegexp, rb_intern("MULTILINE"));
     i_to_s = rb_intern("to_s");
     i_to_json = rb_intern("to_json");
     i_new = rb_intern("new");
@@ -1488,5 +1496,4 @@ void Init_generator(void)
     i_encode = rb_intern("encode");
 #endif
     i_SAFE_STATE_PROTOTYPE = rb_intern("SAFE_STATE_PROTOTYPE");
-    CJSON_SAFE_STATE_PROTOTYPE = Qnil;
 }

ext/json/ext/parser/parser.c

@@ -1,4 +1,4 @@
-
+/* This file is automatically generated from parser.rl by using ragel */
 #line 1 "parser.rl"
 #include "../fbuffer/fbuffer.h"
 #include "parser.h"
@@ -27,7 +27,7 @@ enc_raise(rb_encoding *enc, VALUE exc, const char *fmt, ...)
 
 /* unicode */
 
-static const char digit_values[256] = {
+static const signed char digit_values[256] = {
     -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
     -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
     -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, -1,
@@ -46,7 +46,7 @@ static const char digit_values[256] = {
 
 static UTF32 unescape_unicode(const unsigned char *p)
 {
-    char b;
+    signed char b;
     UTF32 result = 0;
     b = digit_values[p[0]];
     if (b < 0) return UNI_REPLACEMENT_CHAR;
@@ -1833,7 +1833,7 @@ static VALUE cParser_initialize(int argc, VALUE *argv, VALUE self)
     } else {
         json->max_nesting = 100;
         json->allow_nan = 0;
-        json->create_additions = 1;
+        json->create_additions = 0;
         json->create_id = rb_funcall(mJSON, i_create_id, 0);
         json->object_class = Qnil;
         json->array_class = Qnil;
@@ -2089,14 +2089,21 @@ void Init_parser(void)
     cParser = rb_define_class_under(mExt, "Parser", rb_cObject);
     eParserError = rb_path2class("JSON::ParserError");
     eNestingError = rb_path2class("JSON::NestingError");
+    rb_gc_register_mark_object(eParserError);
+    rb_gc_register_mark_object(eNestingError);
     rb_define_alloc_func(cParser, cJSON_parser_s_allocate);
     rb_define_method(cParser, "initialize", cParser_initialize, -1);
     rb_define_method(cParser, "parse", cParser_parse, 0);
     rb_define_method(cParser, "source", cParser_source, 0);
 
     CNaN = rb_const_get(mJSON, rb_intern("NaN"));
+    rb_gc_register_mark_object(CNaN);
+
     CInfinity = rb_const_get(mJSON, rb_intern("Infinity"));
+    rb_gc_register_mark_object(CInfinity);
+
     CMinusInfinity = rb_const_get(mJSON, rb_intern("MinusInfinity"));
+    rb_gc_register_mark_object(CMinusInfinity);
 
     i_json_creatable_p = rb_intern("json_creatable?");
     i_json_create = rb_intern("json_create");

ext/json/ext/parser/parser.rl

@@ -25,7 +25,7 @@ enc_raise(rb_encoding *enc, VALUE exc, const char *fmt, ...)
 
 /* unicode */
 
-static const char digit_values[256] = {
+static const signed char digit_values[256] = {
     -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
     -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
     -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, -1,
@@ -44,7 +44,7 @@ static const char digit_values[256] = {
 
 static UTF32 unescape_unicode(const unsigned char *p)
 {
-    char b;
+    signed char b;
     UTF32 result = 0;
     b = digit_values[p[0]];
     if (b < 0) return UNI_REPLACEMENT_CHAR;
@@ -728,7 +728,7 @@ static VALUE cParser_initialize(int argc, VALUE *argv, VALUE self)
     } else {
         json->max_nesting = 100;
         json->allow_nan = 0;
-        json->create_additions = 1;
+        json->create_additions = 0;
         json->create_id = rb_funcall(mJSON, i_create_id, 0);
         json->object_class = Qnil;
         json->array_class = Qnil;
@@ -849,14 +849,21 @@ void Init_parser(void)
     cParser = rb_define_class_under(mExt, "Parser", rb_cObject);
     eParserError = rb_path2class("JSON::ParserError");
     eNestingError = rb_path2class("JSON::NestingError");
+    rb_gc_register_mark_object(eParserError);
+    rb_gc_register_mark_object(eNestingError);
     rb_define_alloc_func(cParser, cJSON_parser_s_allocate);
     rb_define_method(cParser, "initialize", cParser_initialize, -1);
     rb_define_method(cParser, "parse", cParser_parse, 0);
     rb_define_method(cParser, "source", cParser_source, 0);
 
     CNaN = rb_const_get(mJSON, rb_intern("NaN"));
+    rb_gc_register_mark_object(CNaN);
+
     CInfinity = rb_const_get(mJSON, rb_intern("Infinity"));
+    rb_gc_register_mark_object(CInfinity);
+
     CMinusInfinity = rb_const_get(mJSON, rb_intern("MinusInfinity"));
+    rb_gc_register_mark_object(CMinusInfinity);
 
     i_json_creatable_p = rb_intern("json_creatable?");
     i_json_create = rb_intern("json_create");

lib/json/common.rb

@@ -153,7 +153,7 @@ class MissingUnicodeSupport < JSONError; end
   # * *object_class*: Defaults to Hash
   # * *array_class*: Defaults to Array
   def parse(source, opts = {})
-    Parser.new(source, opts).parse
+    Parser.new(source, **(opts||{})).parse
   end
 
   # Parse the JSON document _source_ into a Ruby data structure and return it.
@@ -176,7 +176,7 @@ def parse!(source, opts = {})
       :max_nesting  => false,
       :allow_nan    => true
     }.merge(opts)
-    Parser.new(source, opts).parse
+    Parser.new(source, **(opts||{})).parse
   end
 
   # Generate a JSON document from the Ruby data structure _obj_ and return

tests/json_common_interface_test.rb

@@ -27,15 +27,15 @@ def test_index
   end
 
   def test_parser
-    assert_match /::Parser\z/, JSON.parser.name
+    assert_match(/::Parser\z/, JSON.parser.name)
   end
 
   def test_generator
-    assert_match /::Generator\z/, JSON.generator.name
+    assert_match(/::Generator\z/, JSON.generator.name)
   end
 
   def test_state
-    assert_match /::Generator::State\z/, JSON.state.name
+    assert_match(/::Generator::State\z/, JSON.state.name)
   end
 
   def test_create_id

tests/json_generator_test.rb

@@ -40,6 +40,43 @@ def setup
 EOT
   end
 
+  def silence
+    v = $VERBOSE
+    $VERBOSE = nil
+    yield
+  ensure
+    $VERBOSE = v
+  end
+
+  def test_remove_const_segv
+    stress = GC.stress
+    const = JSON::SAFE_STATE_PROTOTYPE.dup
+
+    bignum_too_long_to_embed_as_string = 1234567890123456789012345
+    expect = bignum_too_long_to_embed_as_string.to_s
+    GC.stress = true
+
+    10.times do |i|
+      tmp = bignum_too_long_to_embed_as_string.to_json
+      raise "'\#{expect}' is expected, but '\#{tmp}'" unless tmp == expect
+    end
+
+    silence do
+      JSON.const_set :SAFE_STATE_PROTOTYPE, nil
+    end
+
+    10.times do |i|
+      assert_raise TypeError do
+        bignum_too_long_to_embed_as_string.to_json
+      end
+    end
+  ensure
+    GC.stress = stress
+    silence do
+      JSON.const_set :SAFE_STATE_PROTOTYPE, const
+    end
+  end if JSON.const_defined?("Ext")
+
   def test_generate
     json = generate(@hash)
     assert_equal(parse(@json2), parse(json))
@@ -374,4 +411,10 @@ def to_s; self; end
       assert_equal '["foo"]', JSON.generate([s.new('foo')])
     end
   end
+
+  if defined?(Encoding)
+    def test_nonutf8_encoding
+      assert_equal("\"5\u{b0}\"", "5\xb0".force_encoding("iso-8859-1").to_json)
+    end
+  end
 end

tests/json_parser_test.rb

@@ -91,27 +91,27 @@ def test_parse_numbers
     assert_raise(JSON::ParserError) { parse('+23') }
     assert_raise(JSON::ParserError) { parse('.23') }
     assert_raise(JSON::ParserError) { parse('023') }
-    assert_equal 23, parse('23')
-    assert_equal -23, parse('-23')
-    assert_equal_float 3.141, parse('3.141')
-    assert_equal_float -3.141, parse('-3.141')
-    assert_equal_float 3.141, parse('3141e-3')
-    assert_equal_float 3.141, parse('3141.1e-3')
-    assert_equal_float 3.141, parse('3141E-3')
-    assert_equal_float 3.141, parse('3141.0E-3')
-    assert_equal_float -3.141, parse('-3141.0e-3')
-    assert_equal_float -3.141, parse('-3141e-3')
+    assert_equal(23, parse('23'))
+    assert_equal(-23, parse('-23'))
+    assert_equal_float(3.141, parse('3.141'))
+    assert_equal_float(-3.141, parse('-3.141'))
+    assert_equal_float(3.141, parse('3141e-3'))
+    assert_equal_float(3.141, parse('3141.1e-3'))
+    assert_equal_float(3.141, parse('3141E-3'))
+    assert_equal_float(3.141, parse('3141.0E-3'))
+    assert_equal_float(-3.141, parse('-3141.0e-3'))
+    assert_equal_float(-3.141, parse('-3141e-3'))
     assert_raise(ParserError) { parse('NaN') }
     assert parse('NaN', :allow_nan => true).nan?
     assert_raise(ParserError) { parse('Infinity') }
-    assert_equal 1.0/0, parse('Infinity', :allow_nan => true)
+    assert_equal(1.0/0, parse('Infinity', :allow_nan => true))
     assert_raise(ParserError) { parse('-Infinity') }
-    assert_equal -1.0/0, parse('-Infinity', :allow_nan => true)
+    assert_equal(-1.0/0, parse('-Infinity', :allow_nan => true))
   end
 
   def test_parse_bigdecimals
-    assert_equal(BigDecimal,                                 JSON.parse('{"foo": 9.01234567890123456789}', decimal_class: BigDecimal)["foo"].class)
-    assert_equal(BigDecimal.new("0.901234567890123456789E1"),JSON.parse('{"foo": 9.01234567890123456789}', decimal_class: BigDecimal)["foo"]      )
+    assert_equal(BigDecimal,                             JSON.parse('{"foo": 9.01234567890123456789}', decimal_class: BigDecimal)["foo"].class)
+    assert_equal(BigDecimal("0.901234567890123456789E1"),JSON.parse('{"foo": 9.01234567890123456789}', decimal_class: BigDecimal)["foo"]      )
   end
 
   if Array.method_defined?(:permutation)