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Fix parsing incomplete unicode escape "\uaaa" #733

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merged 1 commit into from
Jan 20, 2025
Merged

Fix parsing incomplete unicode escape "\uaaa" #733

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2 changes: 1 addition & 1 deletion ext/json/ext/parser/parser.c
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Original file line number Diff line number Diff line change
Expand Up @@ -630,7 +630,7 @@ static VALUE json_string_unescape(JSON_ParserState *state, const char *string, c
unescape = (char *) "\f";
break;
case 'u':
if (pe > stringEnd - 4) {
if (pe > stringEnd - 5) {
raise_parse_error("incomplete unicode character escape sequence at '%s'", p);
} else {
uint32_t ch = unescape_unicode((unsigned char *) ++pe);
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8 changes: 8 additions & 0 deletions test/json/json_parser_test.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -302,6 +302,14 @@ def test_parse_broken_string
end
end

def test_invalid_unicode_escape
assert_raise(JSON::ParserError) { parse('"\u"') }
assert_raise(JSON::ParserError) { parse('"\ua"') }
assert_raise(JSON::ParserError) { parse('"\uaa"') }
assert_raise(JSON::ParserError) { parse('"\uaaa"') }
assert_equal "\uaaaa", parse('"\uaaaa"')
end

def test_parse_big_integers
json1 = JSON(orig = (1 << 31) - 1)
assert_equal orig, parse(json1)
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