semgrep/semgrep-cpp

Analysis updated 2026-07-20 · repo last pushed 2026-04-30

★ 3CAudience · developerComplexity · 2/5MaintainedSetup · moderate

Mindmap

mindmap
  root((repo))
    What it does
      Parses C++ code
      Feeds Semgrep engine
      Auto-generated files
    Tech stack
      C
      Tree-sitter
      Semgrep platform
    Use cases
      Scan C++ for bugs
      Find security flaws
      Support new C++ syntax
    Audience
      Semgrep maintainers
      Security engineers
      Tool contributors
    Nature of repo
      Not human-readable
      Auto-generated code
      Bundled into Semgrep
    Key concept
      Translation layer
      Parser generator
      Automated updates

mindmap root((repo)) What it does Parses C++ code Feeds Semgrep engine Auto-generated files Tech stack C Tree-sitter Semgrep platform Use cases Scan C++ for bugs Find security flaws Support new C++ syntax Audience Semgrep maintainers Security engineers Tool contributors Nature of repo Not human-readable Auto-generated code Bundled into Semgrep Key concept Translation layer Parser generator Automated updates

What do people build with it?

USE CASE 1

Enable Semgrep to scan C++ codebases for bugs and security vulnerabilities.

USE CASE 2

Regenerate the C++ parser when tree-sitter grammar rules change so Semgrep stays up to date.

USE CASE 3

Support security engineers searching large C++ codebases for newly discovered vulnerability patterns.

What is it built with?

CTree-sitterSemgrep

How does it compare?

	semgrep/semgrep-cpp	amichail-1/orbination-whisper-ai	andrewrk/libogg
Stars	3	3	3
Language	C	C	C
Last pushed	2026-04-30	—	2026-03-31
Maintenance	Maintained	—	Maintained
Setup difficulty	moderate	easy	easy
Complexity	2/5	4/5	2/5
Audience	developer	developer	developer

Figures from each repo's GitHub metadata at analysis time.

How do you get it running?

Difficulty · moderate Time to first run · 30min

This repo is auto-generated and consumed by Semgrep internals, setup involves using the main Semgrep tool rather than running this repository standalone.

No license information is provided in this repository since it is auto-generated code consumed by the Semgrep platform.

In plain English

Semgrep-cpp is a behind-the-scenes helper that gives Semgrep the ability to read and analyze C++ code. Semgrep itself is a popular tool for finding bugs, security flaws, and coding mistakes in software projects by scanning the source code for dangerous patterns. Without this specific piece, that scanning tool wouldn't be able to understand the C++ programming language at all. At a high level, this repository contains the translation layer between raw C++ code and the analysis engine that checks it. The code here isn't actually hand-written by developers, it is automatically generated by a separate tool called a tree-sitter. Think of it like an auto-translated dictionary. When developers update how C++ is parsed, a computer program churns out new files in this repository, which are then bundled into the main scanning software so it understands the latest C++ structure. The people who use this are primarily the maintainers and contributors working on the Semgrep platform, rather than everyday software developers. For example, if a security engineer wants to search a massive codebase for a newly discovered vulnerability written in C++, they rely on the main tool. This repository is simply the engine under the hood that allows that search to successfully identify variables, loops, and functions written in that specific language. Because this is automatically generated code meant to be consumed by other software, the repository is not designed to be read or modified by humans. The actual instructions included in the documentation are just pointers for the core maintainers on how to generate a new version of the parser when the underlying rules change. It trades human readability for the convenience of automated updates.

Copy-paste prompts

Prompt 1

I want to use Semgrep to scan my C++ project for security vulnerabilities. How do I install and run Semgrep with C++ support enabled?

Prompt 2

Help me write a custom Semgrep rule to find dangerous C++ patterns like unchecked array accesses or unsafe pointer arithmetic in my codebase.

Prompt 3

I maintain a Semgrep deployment and need to regenerate the C++ parser after updating tree-sitter grammar rules. Walk me through the steps in the semgrep-cpp repo documentation.

Frequently asked questions

What is semgrep-cpp?

Semgrep-cpp is an auto-generated translation layer that lets the Semgrep code-scanning tool understand and analyze C++ source code. It is maintained by Semgrep contributors and is not meant to be read or modified by humans.

What language is semgrep-cpp written in?

Mainly C. The stack also includes C, Tree-sitter, Semgrep.

Is semgrep-cpp actively maintained?

Maintained — commit in last 6 months (last push 2026-04-30).

What license does semgrep-cpp use?

No license information is provided in this repository since it is auto-generated code consumed by the Semgrep platform.

How hard is semgrep-cpp to set up?

Setup difficulty is rated moderate, with roughly 30min to a first successful run.

Who is semgrep-cpp for?

Mainly developer.

Open on GitHub → Explain another repo

This repo across BitVibe Labs

Verify against the repo before relying on details.