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Add a specific error for unescaped newlines #916

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Merged
byroot merged 1 commit into from
Dec 10, 2025
+11 −0
Merged

Add a specific error for unescaped newlines #916

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3 changes: 3 additions & 0 deletions ext/json/ext/parser/parser.c
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Original file line number Diff line number Diff line change
Expand Up @@ -752,6 +752,9 @@ NOINLINE(static) VALUE json_string_unescape(JSON_ParserState *state, JSON_Parser
break;
default:
if ((unsigned char)*pe < 0x20) {
if (*pe == '\n') {
raise_parse_error_at("Invalid unescaped newline character (\\n) in string: %s", state, pe - 1);
}
raise_parse_error_at("invalid ASCII control character in string: %s", state, pe - 1);
}
raise_parse_error_at("invalid escape character in string: %s", state, pe - 1);
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8 changes: 8 additions & 0 deletions test/json/json_parser_test.rb
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Expand Up @@ -164,6 +164,14 @@ def test_parse_complex_objects
end
end

def test_parse_control_chars_in_string
0.upto(31) do |ord|
assert_raise JSON::ParserError do
parse(%("#{ord.chr}"))
end
end
end

def test_parse_arrays
assert_equal([1,2,3], parse('[1,2,3]'))
assert_equal([1.2,2,3], parse('[1.2,2,3]'))
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