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Base64 decoding silently ignores foreign characters · case 05

Base64 decoding silently ignores foreign characters.

Member previewVariant 5 · 3 implementations · 4 checks per implementation

Case contract

Decode canonical standard alphabet base64 with validation; invalid input returns None.

Why this case matters

A local executable model for consumers of structured text; oracle values are authored literals, not outputs copied from the repaired implementation.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixtureActualExpectedOutcome
boundary 1[97]nullFailed

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