## +23 ## Back To Basics Debugging ## GREG LAW ## 20 23 October 01 - 06 ## Most programmers spend most of their time debugging  Everyone knows that debugging is twice as hard as writing a program in the first place. So if you're as clever as you can be when you write it, how will you ever debug it? Brian Kernighan Advice vs tools 1. General advice. 2. Fantastic tools and where to find them. Part 0: What is debugging? ## Reality  ## What

### solo.io ## Developing & Debugging WebAssembly Filters Idit Levine & Yuval Kohavi  ![Image](/uploads/docume

## Debugging the BPF Virtual Machine eBPF Summit ## Why? ● Debugging is useful to understand how things work ● Sometimes, eBPF programs can’t even load - I couldn’t find good resources on this, so O=$PWD/build ARCH=x86_64 menuconfig make O=$PWD/build ARCH=x86_64 -j16 ## Remember to: - Enable debugging symbols under Kernel Hacking -> compile options ## Rootfs git clone git://git.buildroot.net/buildroot ##### verbose(void *, const char *, ...) - We can use it in bpf/verifier.c to do printf based debugging ● Sometimes it’s better than messing around with pointers in gdb ## Thank you!

## Back to Basics: Debugging Techniques Bob Steagall CppCon 2021 KEWB COMPUTING ## The Cost of Software Failures ## • January 2018, Tricentis’ Software Fail Watch documents 606 software failures in System component design flaws ## Agenda • What are bugs? • What is debugging? • Challenges when debugging • A simple process for debugging • Some recommendations ## DANGER XING ## Opinions lie ahead! ## violated • This viewpoint is very common in regulated industries ## What is Debugging? ## • Wikipedia says: "... debugging is the process of finding and resolving bugs (defects or problems that prevent

## +24 ## Back To Basics Debugging and Testing ## GREG LAW & MIKE SHAH ### Writing software is really hard. If it’s not tested, it doesn’t work Or at least it will soon stop working. ## WHAT'S BUT WHEN I DO, DO IT IN PRODUCTION Software development done right is basically testing and debugging. ## GOOD TESTS ARE • Independent • Repeatable Fast ## DIFFERENT TESTS — ALL ARE NEEDED Unit Most programmers spend most of their time debugging  Everyone knows that debugging is twice as hard as writing a program in

## eBPF Summit October 28, 2020 ## Debugging Go in production using eBPF  i'm Zain ![Image](/uploads/documents/2/c

## Debugging Istio Within the Department of Defense Nick Nellis / Adam Toy  ![Image](/uploads/documents/7/b/5/7/7b5731

improvements to Debugging Go Code in VS Code in the last year Ramya Rao Software Engineer, Microsoft Maintainer of the Go plugin to VS Code ## Add/remove breakpoints when in the middle of debugging ## Attach

## +24 ## How Meta Made Debugging Async Code Easier with Coroutines and Senders IAN PETERSEN & JESSICA WONG ## Stack Traces for Async Code are Unhelpful IO Thread: ![Image](/uploads/documents

. 372 29.6 REPL formatting ..... 373 29.7 System and Package Image Building ..... 374 29.8 Debugging and profiling ..... 374 30 Embedding Julia ..... 377 30.1 High-Level Embedding ..... 377 30 due to open tasks or IO 1626 103 Developing/debugging Julia's C code 1629 103.1 Reporting and analyzing crashes (segfaults) 1629 103.2 gdb debugging tips 1632 103.3 Using Valgrind with Julia variables have no spooky effect on the meaning of code that may be far away; in the REPL copy-and-paste debugging works and beginners don't have any issues; any time someone either forgets a global annotation