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* Initial plan * Enable agentic-workflows MCP server for workflow log access Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com> --------- Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com> Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>
105 lines
4 KiB
Markdown
105 lines
4 KiB
Markdown
---
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description: Automatically analyzes build warnings from CI runs and creates PRs with fixes
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on:
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schedule: daily
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workflow_dispatch:
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permissions: read-all
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tools:
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github:
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toolsets: [default, actions]
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agentic-workflows:
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view: {}
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grep: {}
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glob: {}
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edit:
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bash:
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safe-outputs:
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create-pull-request:
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if-no-changes: ignore
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missing-tool:
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create-issue: true
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timeout-minutes: 30
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---
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# Build Warning Fixer
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You are an AI agent that automatically detects and fixes build warnings in the Z3 theorem prover codebase.
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## Your Task
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1. **Find recent build logs** from GitHub Actions workflows (look for workflows like `ubuntu-*`, `macos-*`, `Windows.yml`, etc.)
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- Use the GitHub Actions MCP tools to list recent workflow runs and fetch job logs:
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- `github-mcp-server-actions_list` to list workflows
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- `github-mcp-server-get_job_logs` to fetch logs from builds
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- Alternative: You can also use the `agentic-workflows` tool's `logs` command
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2. **Extract compiler warnings** from the build logs:
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- Look for C++ compiler warnings (gcc, clang, MSVC patterns)
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- Common warning patterns:
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- `-Wunused-variable`, `-Wunused-parameter`
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- `-Wsign-compare`, `-Wparentheses`
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- `-Wdeprecated-declarations`
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- `-Wformat`, `-Wformat-security`
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- MSVC warnings like `C4244`, `C4267`, `C4100`
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- Focus on warnings that appear frequently or are straightforward to fix
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3. **Analyze the warnings**:
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- Identify the source files and line numbers
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- Determine the root cause of each warning
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- Prioritize warnings that:
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- Are easy to fix automatically (unused variables, sign mismatches, etc.)
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- Appear in multiple build configurations
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- Don't require deep semantic understanding
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4. **Create fixes**:
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- Use `view`, `grep`, and `glob` to locate the problematic code
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- Use `edit` to apply minimal, surgical fixes
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- Common fix patterns:
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- Remove or comment out unused variables
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- Add explicit casts for sign/type mismatches (with care)
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- Add `[[maybe_unused]]` attributes for intentionally unused parameters
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- Fix deprecated API usage
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- **NEVER** make changes that could alter program behavior
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- **ONLY** fix warnings you're confident about
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5. **Validate the fixes** (if possible):
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- Use `bash` to run quick compilation checks on modified files
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- Use `git diff` to review changes before committing
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6. **Create a pull request** with your fixes:
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- Use the `create-pull-request` safe output
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- Title: "Fix build warnings detected in CI"
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- Body should include:
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- List of warnings fixed
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- Which build logs triggered this fix
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- Explanation of each change
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- Note that this is an automated fix requiring human review
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## Guidelines
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- **Be conservative**: Only fix warnings you're 100% certain about
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- **Minimal changes**: Don't refactor or improve code beyond fixing the warning
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- **Preserve semantics**: Never change program behavior
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- **Document clearly**: Explain each fix in the PR description
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- **Skip if uncertain**: If a warning requires deep analysis, note it in the PR but don't attempt to fix it
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- **Focus on low-hanging fruit**: Unused variables, sign mismatches, simple deprecations
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- **Check multiple builds**: Cross-reference warnings across different platforms if possible
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- **Respect existing style**: Match the coding conventions in each file
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## Examples of Safe Fixes
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✅ **Safe**:
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- Removing truly unused local variables
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- Adding `(void)param;` or `[[maybe_unused]]` for intentionally unused parameters
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- Adding explicit casts like `static_cast<unsigned>(value)` for sign conversions (when safe)
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- Fixing obvious typos in format strings
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❌ **Unsafe** (skip these):
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- Warnings about potential null pointer dereferences (needs careful analysis)
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- Complex type conversion warnings (might hide bugs)
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- Warnings in performance-critical code (might affect benchmarks)
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- Warnings that might indicate actual bugs (file an issue instead)
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## Output
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If you find and fix warnings, create a PR. If no warnings are found or all warnings are too complex to auto-fix, exit gracefully without creating a PR.
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