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What is c-memory-ownership-contracts?

rabbinur71/c-memory-ownership-contracts — explained in plain English

Analysis updated 2026-05-18

0CAudience · developerComplexity · 2/5Setup · easy

In one sentence

An ISO C99 tutorial teaching how to design memory-safe C APIs with clear ownership, lifetime, and cleanup rules.

Mindmap

mindmap
  root((ownership contracts))
    What it does
      Teaches memory ownership
      Shows lifetime rules
      Demonstrates cleanup
    Tech stack
      C99
      CMake
      GCC or Clang
    Use cases
      Learn safe C memory design
      Study sanitizer testing
      Reference for API contracts
    Audience
      C learners
      Systems programmers
    Topics
      Borrowed views
      Caller owned buffers
      Leak safety

Code map

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filefunction / class

What do people build with it?

USE CASE 1

Learn how to design C APIs with clear memory ownership rules.

USE CASE 2

Study an example of leak-free, double-free-free cleanup code.

USE CASE 3

Use as a teaching reference for caller-owned buffers and borrowed views.

What is it built with?

C99CMakeGCCClang

How does it compare?

rabbinur71/c-memory-ownership-contractsac000/find-flvacc4github/kdenlive-omnifade
Stars00
LanguageCCC
Last pushed2013-04-05
MaintenanceDormant
Setup difficultyeasymoderatemoderate
Complexity2/52/52/5
Audiencedeveloperdevelopergeneral

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

How do you get it running?

Difficulty · easy Time to first run · 30min

Needs CMake 3.20+ and a C99-compatible compiler like GCC or Clang.

Copyright is held by the author, the README does not spell out specific reuse permissions.

So what is it?

This project is an educational tutorial that teaches how to write safe, well-behaved C programs when it comes to memory management. It comes from the "C by Raaz" YouTube channel and is written in ISO C99, an older but still widely used version of the C programming language. The core lesson is about ownership contracts: clear rules about who is responsible for a piece of memory at any given time, who must clean it up, and how long it stays valid. The example code walks through several common patterns that C programmers run into, including a function that allocates memory and hands responsibility for it to the caller, a caller supplied output buffer, a read only view into data that the caller does not own, and clear boundaries for how long a piece of data remains valid. It also shows how to clean up memory properly without causing leaks or accidentally freeing the same memory twice, and how to handle failures such as a buffer that is too small. The project is organized simply, with a header file describing the public functions, a source file implementing them, and an example program that demonstrates the pattern in action. Building it requires CMake version 3.20 or newer and a C99 compatible compiler such as GCC or Clang. There is also an option to build the project with sanitizers enabled, which are tools that catch memory errors like leaks or invalid access while the program runs. According to the README, a correct run with sanitizers enabled should complete cleanly with no memory issues detected. The code follows a strict coding standard: warnings are treated as errors, variables and outputs are always initialized, buffer sizes are checked carefully, and there is no hidden global state that could cause confusion. The author also aligns the style with established safety guidelines used in critical software, namely MISRA C and CERT C. This project is best suited for someone learning how professional C code manages memory responsibly, rather than a ready to use library.

Copy-paste prompts

Prompt 1
Explain how ownership contracts work in this C project's example code.
Prompt 2
Walk me through building and running this project with sanitizers enabled.
Prompt 3
Show me how caller-owned buffers differ from borrowed views in this code.
Prompt 4
Help me apply this project's memory ownership pattern to my own C code.

Frequently asked questions

What is c-memory-ownership-contracts?

An ISO C99 tutorial teaching how to design memory-safe C APIs with clear ownership, lifetime, and cleanup rules.

What language is c-memory-ownership-contracts written in?

Mainly C. The stack also includes C99, CMake, GCC.

What license does c-memory-ownership-contracts use?

Copyright is held by the author, the README does not spell out specific reuse permissions.

How hard is c-memory-ownership-contracts to set up?

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

Who is c-memory-ownership-contracts for?

Mainly developer.

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