CrashCatch

A cross-platform, efficient, and easy-to-integrate crash-reporting library for modern C++ applications.

CrashCatch is a lightweight, single-header C++ crash-reporting library for generating .dmp and .txt crash logs — complete with stack traces, diagnostics, optional cleanup hooks, and user dialogs.

🎯 Overview

CrashCatch provides simple and powerful crash diagnostics for C++ applications on Windows and Linux, with macOS support planned. Whether you're building GUI apps, system tools, or CLI utilities, CrashCatch helps you catch and log critical failures with minimal setup.

As of v1.2, CrashCatch supports rich crash context capture and includes optional post-crash upload integration.

🚀 Key Features

✅ Cross-platform: Windows & Linux (macOS coming soon)
🔹 Single-header C++ integration
💥 Exception and signal handling (SIGSEGV, SIGABRT, SIGFPE, etc.)
🧠 .dmp and .txt crash report generation
🧩 onCrash() & onCrashUpload() Hooks – Run cleanup or upload crash artifacts
🔍 Demangled symbols on Linux, symbol resolution on Windows
📋 Self-diagnostics: version, build, architecture, exec path
🧼 Drop-in, no external libraries required
⚙️ Fully configurable output format & location
📁 CMake install + find_package support
🧪 Debug & release builds supported

✅ Supported Platforms

OS	Supported	Crash Handling Method
Windows	✅ Yes	`SetUnhandledExceptionFilter` + MiniDump
Linux	✅ Yes	POSIX signals (`signal()`) + backtrace
macOS	🚧 Planned	POSIX + Mach exceptions

📁 Project Structure

CrashCatch/
├── include/
│   └── CrashCatch.hpp       # Single-header crash handler
├── examples/
│   └── CrashCatchExample.cpp
├── LICENSE                  # MIT License
├── README.md                # Project documentation
└── CONTRIBUTING.md          # Contribution guidelines

🔧 Installation

CrashCatch is 100% header-only.

To integrate:

Copy include/CrashCatch.hpp into your project
Add #include "CrashCatch.hpp" in your code
(Optional) Use CrashCatch::enable() or the CRASHCATCH_AUTO_INIT macro
For Linux inlcude -ldl or -rdynamic for deeper Linux symbole resolution if desired

✅ No build steps.
❌ No .lib, .dll, or .so.
🔒 Just one .hpp file, ready to use.

Copy CrashCatch.hpp into your project and include it:

#include "CrashCatch.hpp"

## QuickStart
### Zero Config (Auto-init)
```cpp
#define CRASHCATCH_AUTO_INIT
#include "CrashCatch.hpp"

int main(){
    int* ptr = nullptr;
    *ptr = 42; // simulated crash
}

One-Liner Initialization

#include "CrashCatch.hpp"
int main(){
    CrashCatch::enable(); //Initalizes with default config

    int* ptr = nullptr;
    *ptr = 42; // simulated crash
}

Full Configuration

#include "CrashCatch.hpp"

int main(){
    CrashCatch::Config config:
    config.appVersion = "1.0.0";
    config.buildConfig = "Release";
    config.additionalNotes = "This is a test build.";
    config.onCrash = []{
        std::cout << "Cleaning up before crash...\n"/
    };
    config.showCrashDialog = true;

    CrashCatch::initalize(config);

    int* ptr = nullptr;
    *ptr = 42; // simulated crash
}

📦 CMake Integration

You can install CrashCatch with:

cmake -Bbuild -DCMAKE_INSTALL_PREFIX=install
cmake --build build --target install
find_package(CrashCatch REQUIRED)
target_link_libraries(MyApp PRIVATE CrashCatch::CrashCatch)

📄 Crash Output

When a crash occurs, CrashCatch generates the following files in the ./crash_dumps/ directory:

crash_YYYY-MM-DD_HH-MM-SS.dmp — Binary MiniDump (viewable in tools like WinDbg)
crash_YYYY-MM-DD_HH-MM-SS.txt — Human-readable crash summary

📋 Example `.txt` Includes:

Crash Report (Windows)
============

Timestamp: 2025-04-01_14-23-56
Dump File: ./crash_dumps/crash_2025-04-01_14-23-56.dmp
Exception Code: 0xC0000005
Thread ID: 12345

Stack Trace:
  [0]: MyApp::SomeFunction + 0x15
  [1]: MyApp::MainLoop + 0x2a
  [2]: WinMain + 0x10
  [3]: __tmainCRTStartup + 0x20
  [4]: BaseThreadInitThunk + 0x14
  [5]: RtlUserThreadStart + 0x21

Environment Info:
App Version: 1.0.0
Build Config: Release
Architecture: x64
Executable: C:\Path\To\YourApp.exe
Uptime (s): 182
Notes: Test build

Crash Report (Linux)
============
Timestamp: 2025-04-04_15-42-18
Signal: Segmentation fault (11)

Stack Trace:
  [0]: ./CrashCatchTest(+0x1234)
  [1]: libc.so.6(+0xdeadbeef)
  [2]: start_thread
  [3]: __libc_start_main

Environment Info:
App Version: 1.1.0
Build Config: Release
Platform: Linux
Executable: /home/user/CrashCatchTest

The .txt files contains:

Timestamp: The time the crash occurred.
Dump File: The path to the generated MiniDump file.
Exception Code: The exception code that caused the crash.
Thread ID: The ID of the thread that crashed.
Stack Trace: A list of function calls leading up to the crash.
Environment Info: Additional information about the environment in which the crash occurred.
Architecture (x86/x64): The architecture of the system where the crash occurred.
Executable: The path to the executable that crashed.
Uptime (s): The duration the application was running when the crash occurred. -App version: The version of the application from config.
Build Config: The configuration of the build (e.g., Release, Debug).
Notes: Any additional notes or comments about the crash.

Crash Context API

CrashCatch provides detailed crash metadata via CrashContext:

struct CrashContext{
  std::string dumpFilePath;
  std::string logFilePath;
  std::string timestamp;
  int singalOrCode;
};

You can use both in `onCrash` and `onCrashUpload`

🗺 Roadmap

CrashCatch is actively being developed with the goal of becoming a robust, cross-platform crash-handling solution.

✅ Completed

🔜 Planned

📝 Contributing

We warmly welcome contributions! Check CONTRIBUTING.md for more information.

📄 License

CrashCatch is licensed under the MIT License. You're free to use, modify, and distribute it within your projects.

keithpotz/CrashCatch