Flawfinder

2.0.19 verified Mon Apr 27 auth: no python maintenance

A static analysis tool for C/C++ code that searches for potential security flaws (e.g., buffer overflows, format string vulnerabilities). Version 2.0.19 requires Python >=2.7, with no recent releases; appears to be in maintenance mode.

pip install flawfinder

Common errors

error ModuleNotFoundError: No module named 'flawfinder' ↓

cause Trying to import flawfinder as a Python module, but it's not installed as a library (it's a script).

fix

Install with pip and run 'flawfinder' from command line, not via import.

error flawfinder: error: unrecognized arguments: ... ↓

cause Using incorrect command-line arguments.

fix

Check 'flawfinder --help' for supported arguments.

Warnings

gotcha Flawfinder is a command-line tool, not a Python library designed for import. Attempting to import 'flawfinder' as a module may work but is not officially supported and may break. ↓

fix Use subprocess or os.system to call flawfinder from Python.

deprecated Flawfinder has not been updated since 2019; requires Python >=2.7. It may not work on Python 3.10+ without adjustments. ↓

fix Consider alternatives like Cppcheck or clang-tidy for modern C/C++ analysis.

Imports

flawfinder
wrong
```
from flawfinder import scan
```
correct
```
import flawfinder; flawfinder.scan()
```
flawfinder is a script, not a standard module; the recommended way is to run the command-line tool, not import as a library.

Quickstart

Flawfinder is primarily a command-line tool. Use subprocess to invoke it from Python.

import subprocess
result = subprocess.run(['flawfinder', '--help'], capture_output=True, text=True)
print(result.stdout)