Linear history with bad commit third from beginning - model identifies third commit
Tests ability to identify the third commit as bad. Evaluates bisect with the bug early but not at the very start.
Baseline Repository
These commands set up the repo before the model sees the prompt. They define the starting file structure, staged changes, and Git history.
- 01
git init - 02
git config user.email 'test@test.com' - 03
git config user.name 'Test User' - 04
echo '#!/bin/bash' > test.sh - 05
echo '! grep -q "port: 8080" config/*.yaml 2>/dev/null' >> test.sh - 06
chmod +x test.sh - 07
git add test.sh - 08
git commit -m 'Initial commit' - 09
mkdir -p config && echo 'server: port: 3000' > config/default.yaml - 10
git add config/default.yaml - 11
git commit -m 'add default config' - 12
echo 'server: port: 8080' > config/default.yaml - 13
git add config/default.yaml - 14
git commit -m 'change port' - 15
echo 'server: port: 8080 feature: true' > config/default.yaml - 16
git add config/default.yaml - 17
git commit -m 'add feature flag' - 18
mkdir -p src && echo 'const PORT = 3000;' > src/index.js - 19
git add src/index.js - 20
git commit -m 'add port constant'
Prompt
You are debugging a git repository. The following commit history has one bad commit that broke the build. Identify the bad commit hash (first 7 characters) or commit subject line that introduced the bug. Use the git log and test output to determine which commit is bad.
Your answer should be the commit hash (e.g., 'abc1234') or the commit subject line.
Expected
change port
Campaign Evidence
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Model Outputs (14)
053cfe6
603c668
JSON Schema
Structured Output
(raw) {
"commit": "603c668"
}
Based on the test results, the first commit that fails is `707ef8e` (change port). All commits after that also fail, meaning this is the commit that introduced the bug.
The bad commit is: **707ef8e**
24cc421
JSON Schema
Structured Output
(raw) { "commit": "24cc421" }
Based on the test results, the build first failed at commit `0c6283d change port` (exit code 1), and all subsequent commits also failed. This indicates that the bad commit that introduced the bug is:
`0c6283d` (or the subject line "change port")
04d41df
JSON Schema
Structured Output
(raw) {"commit": "04d41df"}
13573f2
c484d29
JSON Schema
Structured Output
(raw) { "commit": "c484d29" }
059c4cb
2d3e745
JSON Schema
Structured Output
(raw) {
"commit": "2d3e745"
}
Looking at the test results, I can see a clear pattern:
- Commits de91a56 and f452634: **PASS**
- Commit 4575773 ("change port"): **FAIL**
The build was passing before commit 4575773 and started failing at that commit. This is the commit that introduced the bug.
**Bad commit: 4575773** (or "change port" as the subject line)
47cc580
JSON Schema
Structured Output
(raw) {"commit": "47cc580"}
Looking at the test results, I can see that the build passed for commits `c40a955` and `ac727da`, but started failing at `b1fddb8` (change port). This means the bug was introduced in commit `b1fddb8`.
Let me verify this by checking the commit details:
The commit `b1fddb8` with the subject "change port" is the first commit where the tests failed. The subsequent commits (`8eb078c` and `cfc4de9`) also show failures, but those were likely caused by the initial bug introduced in `b1fddb8`.
**Answer: b1fddb8**
58edee4
JSON Schema
Structured Output
(raw) {"commit": "58edee4"}