From db4ecb1f8b045ff227aec1897f36662ac0c97882 Mon Sep 17 00:00:00 2001 From: Meta Vens Date: Fri, 2 Oct 2026 23:53:36 +0200 Subject: [PATCH] Readability vectors: a store followed by one stray byte is refused by every runtime The manifest held only three-byte and whole-store trailers, so a Rust reader that tolerated a single trailing byte passed every suite while C#, TypeScript and Python refused the file. Co-Authored-By: Claude Sonnet 5.5 --- tests/vectors/document-variants-c2a/readability/generate.py | 1 + tests/vectors/document-variants-c2a/readability/manifest.txt | 1 + .../vectors/document-variants-c2a/readability/trailing-byte.bin | 1 + 3 files changed, 3 insertions(+) create mode 100644 tests/vectors/document-variants-c2a/readability/trailing-byte.bin diff --git a/tests/vectors/document-variants-c2a/readability/generate.py b/tests/vectors/document-variants-c2a/readability/generate.py index 8a628a48..25e12496 100644 --- a/tests/vectors/document-variants-c2a/readability/generate.py +++ b/tests/vectors/document-variants-c2a/readability/generate.py @@ -31,6 +31,7 @@ vectors = { "scalar": b"\x01", "map": b"\x80", "truncated": whole[:-1], + "trailing-byte": whole + b"\x01", "trailing-bytes": whole + b"\x01\x02\x03", "trailing-store": whole + whole, # A header and a body of the wrong shape, for both readable headers. diff --git a/tests/vectors/document-variants-c2a/readability/manifest.txt b/tests/vectors/document-variants-c2a/readability/manifest.txt index 55002cf7..6e42b894 100644 --- a/tests/vectors/document-variants-c2a/readability/manifest.txt +++ b/tests/vectors/document-variants-c2a/readability/manifest.txt @@ -16,6 +16,7 @@ bin-header-v9.bin refuses refuses refuses refuses scalar.bin refuses refuses refuses refuses map.bin refuses refuses refuses refuses truncated.bin refuses refuses refuses refuses +trailing-byte.bin refuses refuses refuses refuses trailing-bytes.bin refuses refuses refuses refuses trailing-store.bin refuses refuses refuses refuses bad-body-v1.bin refuses refuses refuses refuses diff --git a/tests/vectors/document-variants-c2a/readability/trailing-byte.bin b/tests/vectors/document-variants-c2a/readability/trailing-byte.bin new file mode 100644 index 00000000..d1be58e3 --- /dev/null +++ b/tests/vectors/document-variants-c2a/readability/trailing-byte.bin @@ -0,0 +1 @@ +“²cultcache.store.v3‘—¬vectors.item¬vectors.item¯vectors.item.v1¬vectors.itemÙL{"schemaName":"vectors.item","schemaVersion":"vectors.item.v1","members":[]}‘¬vectors.item’”¥alpha¬vectors.item¹2026-09-29T00:00:00+00:00Ä’¥alpha”€beta¬vectors.item¹2026-09-29T00:00:01+00:00Ä’€beta \ No newline at end of file