FAILURE MAP
← Case archive

FA-3754 / Parsing / Member archive

A closing parenthesis appears before its matching opener · case 04

A closing parenthesis appears before its matching opener.

Member previewVariant 4 · 3 implementations · 4 checks per implementation

Case contract

Validate strings of parentheses with balanced counts and no negative prefix depth.

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 1truefalseFailed

MEMBER ARCHIVE

The complete case is available to members.

This record includes three runnable implementations, regression fixtures, execution results, and source hashes.

Member access is invitation-based. Sign in with your invited account to inspect the sources.

Sign in to the archive ↗