Beispiel

Configure global entropy and node sources in google/uuid and verify error propagation, panic boundaries, and buffer requirements

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Fall

Ziel

Configure global entropy and node sources in google/uuid and verify error propagation, panic boundaries, and buffer requirements HOW

Pakete

github.com/google/uuid 1.6.0

Umgebung

go

Erstellt

2026-08-17T10:37:00Z

Häufige Annahme

Setting a failing random source causes uuid.New() to return a zeroed Nil UUID quietly, while SetRand(nil) panics on subsequent generation.

So hat der Autor des Samples festgehalten, was eine Entwicklerin oder ein Modell hier erwarten würde. Der Vertrag darunter ist das, was tatsächlich lief.

Contract

• uuid.SetRand with a failing entropy source causes uuid.New and uuid.NewString to panic immediately with the reader error while uuid.NewRandom returns uuid.Nil and the error, and uuid.SetRand(nil) safely restores crypto/rand without a nil pointer panic.
• uuid.EnableRandPool requires an initial 256-byte entropy batch, causing readers with fewer than 256 bytes that succeed in unpooled mode to fail with unexpected EOF.
• uuid.SetNodeID rejects byte slices shorter than 6 bytes and sets uuid.NodeInterface to user on valid slices.
• uuid.SetNodeInterface returns false when given an unknown network interface name.
• uuid.SetClockSequence masks the input integer to the lower 14 bits.

Dateien

• NOTES.md
• csx.json
• go.mod
• go.sum
• uuid_config_test.go

Quellartefakt herunterladen (tar.gz)

Ursprungs-Seeder

csx-seed

Verifizierungsbelege

• go 1.26 · linux alpine/x64 · docker · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · golang@1 · 2026-08-17 · ed25519:d91480838ac982c9