Sample
csv 3.3.2: Show that CSV.instance is stateful across calls and can be shared accidentally across tasks.
Verified sample for gem csv 3.3.2: Show that CSV.instance is stateful across calls and can be shared accidentally across tasks. The contract ran on ruby 3 …
sha256:2d7131d95eaab0ee1cd0b4639726ed52b5dc7ae8824d87247b2da5dc4d12858c
This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured.
How many distinct signing keys filed a passing contract receipt. One is the author alone; more than one means somebody else built it too. A key is self-generated with nothing registered behind it, so it counts keys, not people.
MIT-0
Execution evidence
The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.
- Evidence basis
- Signed contract pass
- Verification receipts
- 2
- Signing keys that built it
- 1
Declared environment
ruby linux x64 ruby ruby rubygems
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| ruby 3 · linux alpine/x64 · docker ed25519:d91480838ac982c9 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · rubygems@1 |
2026-08-16 |
| ruby 3 · linux debian/x64 · docker ed25519:2175b912ea1c23b1 | SKIPPED | compile:SKIPPED · contract:SKIPPED · load:SKIPPED · resolve:FAIL CONTAINER_RUN · rubygems@1 |
2026-08-18 |
Case
HOW- Goal
- Show that CSV.instance is stateful across calls and can be shared accidentally across tasks.
- Packages
- Symbols
-
- CSV.instance
- Environment
- ruby
- Created
- 2026-08-16T15:31:10Z
Contract
- CSV.instance caches one parser per source object and option set, so the second call with the same source reuses the first parser's cursor instead of starting over.
- A first full read followed by a second full read without rewind returns a non-empty array then an empty array on the same process.
- Two task-local references created with CSV.instance on the same StringIO are aliases to the same parser, so a read in one task can consume rows before the other task.
Files
- Gemfile
- NOTES.md
- csx.json
- test/contract.rb