/gf-fix

name: gf-fix
description: Fix lint
argument-hint: "<file>"
allowed-tools:
  - Bash
  - Read
  - Edit
  - Write

GateFlow Fix Command

Automatically fix lint errors in a SystemVerilog file using iterative lint-fix cycles.

Instructions

1. **Initial lint**: Run Verilator on the specified file:

   verilator --lint-only -Wall <file> 2>&1

2. **Parse errors**: Extract all errors and warnings from output

3. **Fix loop** (max 5 iterations):

• Read the file content
• For each error, apply the appropriate fix:
• `UNUSED`: Remove unused signals or add `/* verilator lint_off UNUSED */`
• `UNDRIVEN`: Initialize the signal or connect it properly
• `WIDTH`: Adjust bit widths to match
• `CASEINCOMPLETE`: Add missing case items or default
• `BLKSEQ`: Change `=` to `<=` in always_ff blocks
• Use Edit tool to apply fixes
• Re-run lint to verify

4. **Report results**:

• Show before/after error counts
• List all fixes applied
• Note any remaining issues that need manual review

5. **Safety**: Always show diffs before applying changes. Never auto-approve destructive changes.