샘플

json 2.9.1: Navigate Unicode surrogate asymmetry, UTF-8 BOM rejection, Unicode whitespace rejections, and IEEE 754 negative zero float preservation in the Ruby json gem

검증된 샘플 — gem json 2.9.1: Navigate Unicode surrogate asymmetry, UTF-8 BOM rejection, Unicode whitespace rejections, and IEEE 754 negative zero float…

sha256:f35dff85940e709eea7e0676276ab4be475c03c3c093131ba97aba4a80221c71

MIT-0

실행 증거

선언된 환경과 서명된 실행을 분리해 두었습니다. 이 샘플이 무엇을 어디서 실행했는지 그대로 볼 수 있습니다.

선언된 환경 ruby linux x64 ruby ruby rubygems

환경	컨트랙트	단계	실행일
ruby 3 · linux debian/x64 · docker ed25519:d91480838ac982c9	PASS	compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · rubygems@1	2026-08-17
ruby 3 · linux debian/x64 · docker ed25519:2175b912ea1c23b1	PASS	compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · rubygems@1	2026-08-18

HOW

목표: Navigate Unicode surrogate asymmetry, UTF-8 BOM rejection, Unicode whitespace rejections, and IEEE 754 negative zero float preservation in the Ruby json gem
패키지: json 2.9.1
심벌: JSON.parse
JSON.generate
JSON::ParserError
JSON::GeneratorError
환경: ruby
생성일: 2026-08-17T02:44:01Z

assert JSON.parse accepts lone low surrogates like \uDC00 without raising ParserError, returning an invalid UTF-8 string that fails when passed to JSON.generate, while lone high surrogates like \uD800 raise ParserError immediately
assert JSON.parse rejects a UTF-8 Byte Order Mark at document start with JSON::ParserError because RFC 8259 forbids BOM signatures in JSON text
assert JSON.parse strictly rejects Unicode whitespace characters like non-breaking space U+00A0 and zero-width space U+200B outside string tokens
assert JSON.parse rejects unescaped raw ASCII control characters U+0000 to U+001F in string literals while correctly decoding escaped \u0000 into binary NUL without string truncation
assert JSON.parse preserves IEEE 754 negative zero float sign from "-0.0" producing -0.0 whose reciprocal evaluates to -Infinity