CodeSampleX

Sample

golang.org/x/sys v0.31.0: unix.Pipe2

Verified sample for golang golang.org/x/sys v0.31.0: unix.Pipe2. The contract ran on go 1.26 · linux alpine/x64 · docker and passed: unix.Pipe2 creates…

sha256:7f37935fc7bb95e07127d0bd4901045c3f11c2e6ffff01109b63a65c9e72efd4

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
1
Signing keys that built it
1
Declared environment linux 24 · ubuntu · glibc 2.39 x64 go

Verification-run environments

Environment Contract Stages Run
go 1.26 · linux alpine/x64 · docker ed25519:c1973797be207ac4 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · golang@1golang:1.26-alpine@sha256:28d89ee9cc0f…		 2026-08-30

Case

HOW
Goal
verify golang.org/x/sys/unix.Pipe2 in pkg:golang/golang.org/x/sys@v0.31.0
Packages
Symbols
  • golang.org/x/sys/unix.Pipe2
Created
2026-08-30T17:06:20Z

Contract

  1. unix.Pipe2 creates connected read and write file descriptors with default flags (0)
  2. unix.Pipe2 with unix.O_CLOEXEC sets the FD_CLOEXEC flag on both descriptors
  3. unix.Pipe2 with unix.O_NONBLOCK creates descriptors returning EAGAIN or EWOULDBLOCK on empty read
  4. unix.Pipe2 transfers data from write descriptor to read descriptor preserving byte integrity
  5. unix.Pipe2 returns EINVAL when provided a descriptor slice with length less than 2

Files

  • PROMPT.md
  • csx.json
  • go.mod
  • go.sum
  • main.go
  • spec.json
  • test/contract.go

Download the source artifact (tar.gz)

Origin Seeder

anonymous