PATCHVERDICT.Candidate repairs. Recorded evidence.
New mission UNAVAILABLE
Mission controlweb-cf5130e4-5e16-4517-b118-6c7118324376
Proof bundle

PATCH VERIFICATION MISSION

division by zero returns Infinity

Bug description

The divide utility returns Infinity when the denominator is zero. Division by zero should be handled safely by returning 0, while normal division behavior must remain unchanged.

Reproduction

Run:

npm test
Repositoryhttps://github.com/prahans/patchverdict-divide-by-zero.git
Issue#1 · View original issue
Execution status
FAILED
Base commit
f2b1a27dbea7dec90dbb7d8c8ba04e00af536a98
Changed files
Unavailable
Investigation
Unavailable

Mission execution failed

Provider returned error

MISSION RECORDREASONING / EVIDENCE / VERDICT

Flight Recorder

4 events / UTC
  1. BASELINERunning reproduction test before patch
  2. BASELINEReported bug reproduced
  3. INVESTIGATINGAI investigation started
  4. FAILEDProvider returned error
Recorded execution eventsSAVED EVENTS

Proof Chain

RECORDED CHECKS
Evidence requirements1 passed · 5 unavailable
  1. Configured failure reproducedPassed · Baseline · exit 1
    01
  2. Candidate patch appliedUnavailable · Patch metadata unavailable
    02
  3. Git diff capturedUnavailable · Base commit unavailable
    03
  4. Integrity checksUnavailable · Integrity analysis unavailable
    04
  5. Reproduction passes after patchUnavailable · Post-patch evidence unavailable
    05
  6. Repository test script passesUnavailable · Repository test evidence unavailable
    06
REPAIR VERDICTUNAVAILABLE
NO VERDICT RECORDED

Repair verdicts apply to the recorded requirements and execution.
Integrity checks detect recognized risks; they do not guarantee correctness.

Git evidence

Candidate patch

The candidate change captured from the sandbox working tree.

No candidate patch is recorded in this proof bundle.

AI investigation report

AI REASONING

PROPOSED DIAGNOSIS

No investigation report is available in this proof bundle.

Patch target
Not recorded
Test file
Not recorded
Reproduction command
npm test
Investigation iterations unavailableReasoning, not proof
Execution evidence

Verification evidence

Recorded command results. Expand a run to inspect its output.

Baseline reproduction

npm test
1.12sexit 1FAILURE REPRODUCED

stdout


> patchverdict-divide-by-zero@1.0.0 test
> vitest run


 RUN  v3.2.4 /tmp/patchverdict

 ❯ src/divide.test.js (4 tests | 1 failed) 14ms
   ✓ divide > divides positive numbers 1ms
   ✓ divide > supports negative results 0ms
   ✓ divide > returns zero when the numerator is zero 0ms
   × divide > returns zero when the denominator is zero 11ms
     → expected Infinity to be +0 // Object.is equality

 Test Files  1 failed (1)
      Tests  1 failed | 3 passed (4)
   Start at  07:11:30
   Duration  280ms (transform 33ms, setup 0ms, collect 30ms, tests 14ms, environment 0ms, prepare 106ms)

stderr


⎯⎯⎯⎯⎯⎯⎯ Failed Tests 1 ⎯⎯⎯⎯⎯⎯⎯

 FAIL  src/divide.test.js > divide > returns zero when the denominator is zero
AssertionError: expected Infinity to be +0 // Object.is equality

- Expected
+ Received

- 0
+ Infinity

 ❯ src/divide.test.js:18:27
     16| 
     17|   it("returns zero when the denominator is zero", () => {
     18|     expect(divide(10, 0)).toBe(0);
       |                           ^
     19|   });
     20| });

⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯[1/1]⎯

Post-patch reproduction

This command evidence was not produced or is unavailable in the proof bundle.

UNAVAILABLE

Repository test script

This command evidence was not produced or is unavailable in the proof bundle.

UNAVAILABLE

Baseline labels reflect the configured failure expectation. Post-patch success uses exit code zero; the verdict also depends on patch and integrity checks.