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@Som1Lse
Som1Lse / fuzzing-cdt.md
Created April 19, 2024 15:50

Fuzzing CDT: Finding, reproducing, and reporting bugs

Introduction

This is a tutorial on how to write a fuzzer for a non-trivial real-world library, namely Artem Amirkhanov's CDT. It is a library for computing Constrained Delaunay Triangulations (CDTs, hence the name of the library). We will be working from the 9d99b32ae56b26cd2781678dc4405c98b8679a9f commit, since that is what I originally wrote the fuzzer for, and that way, we will be able to rediscover the same bugs I found back then.

If you want to follow along, clone the library using

$ git clone https://github.com/artem-ogre/CDT
$ cd CDT
@dselans
dselans / migrate-to-monorepo-2024.md
Last active June 4, 2024 18:39

How-to: Migrating repos on Github to a monorepo

To avoid peppering too many opinions in this “how to” guide, I’ve written a separate “opinion-piece” article on monorepos — you can read it here: https://medium.com/streamdal/mostly-terrible-the-monorepo-5db704f76bdb

Sometime in early Dec 2023, our team decided to migrate ~10 public repositories for an OSS project to a monorepo.

This article provides a “rough” outline for the meatiest parts of the migration.

Good luck! 🤞

@MawKKe
MawKKe / cmake-cxx-mold-linking-howto.md
Last active October 12, 2025 22:07
How to try out the new "mold" linker with your CMake C/C++ project

How to try out the new mold linker with your CMake C/C++ project

Here is a quick how-to if you want to try out the new (supposedly fast) C/C++ linker https://github.com/rui314/mold

In this document I used Ubuntu-22.04 docker container with

  • GCC version 11.2.0
  • Clang version 14.0.0

1. Install mold :

@jdarpinian
jdarpinian / executable.c
Last active September 28, 2025 09:40
Add one line to your C/C++ source to make it executable.
///$(which true);FLAGS="-g -Wall -Wextra --std=c17 -O1 -fsanitize=address,undefined";THIS_FILE="$(cd "$(dirname "$0")"; pwd -P)/$(basename "$0")";OUT_FILE="/tmp/build-cache/$THIS_FILE";mkdir -p "$(dirname "$OUT_FILE")";test "$THIS_FILE" -ot "$OUT_FILE" || $(which clang || which gcc) $FLAGS "$THIS_FILE" -o "$OUT_FILE" || exit $?;exec bash -c "exec -a \"$0\" \"$OUT_FILE\" $([ $# -eq 0 ] || printf ' "%s"' "$@")"
#include <stdio.h>
int main() {
printf("Hello world!\n");
return 0;
}
@jboner
jboner / latency.txt
Last active May 7, 2026 02:04
Latency Numbers Every Programmer Should Know
Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference 0.5 ns
Branch mispredict 5 ns
L2 cache reference 7 ns 14x L1 cache
Mutex lock/unlock 25 ns
Main memory reference 100 ns 20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy 3,000 ns 3 us
Send 1K bytes over 1 Gbps network 10,000 ns 10 us
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD