Matt Godbolt
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matt.godbolt.org
Matt Godbolt
@matt.godbolt.org
3.7K followers 680 following 870 posts
Sometime verb, real person, lover of 8-bit computers, husband & father, trying to be a kind person. #blacklivesmatter; trans rights are human rights.
he/him
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matt.godbolt.org
If you see this, quite with a robot that isn't from Star Wars, Star Trek, Doctor Who, or Transformers.
Robbie, the NES robot!
October 31, 2025 at 2:24 AM
matt.godbolt.org
I have a BBC Master in my office! (Here demoing the fact I don't have the right adapter to connect the RF up)
A BBC Master on a table. The screen it's connected to shows a lot of interference
October 26, 2025 at 8:43 PM
matt.godbolt.org
Unpacking my retro kit from the UK at last. Doubt there are too many of these in basements near me
Shelving with an acron RISC PC and acorn A3010 on it in a messy basement
October 26, 2025 at 6:44 PM
matt.godbolt.org
Who knows what mysteries I'll find on this (if I can find a drive)
A 3.5" floppy disc with no label. The metal protector has the Argonaut logo and "Argonaut" written underneath
October 26, 2025 at 6:32 PM
matt.godbolt.org
Learning some video editing skills...wow what a time sink!
A desktop with a mouse, headphones, and various electronic junk. The PC is running video software and has a timeline on it.
October 24, 2025 at 10:44 PM
matt.godbolt.org
I just rediscovered a mind map of the CppCon presentation I gave earlier this year. A window into my process!
Handwritten mind map on plain paper with interconnected bubbles and boxes exploring C++ ecosystem topics. Clearly readable elements include: Top area: "Build community", "IKEA doc", "Committee", "Know how stuff really works" Left side: "Circle", "Ranges", "Reflection" Central node: "C++" connecting to "Compile", "STL", "Stepanov" Right side: "Welsh", "School", "Local meetup", "conferences" "Eco system" (boxed) connects to: Build tools: "make", "OSS" Compiler infrastructure: "libclang", "Sanitizers", "clang", "LLVM" "CE" (Compiler Explorer) "libraries", "boost", "FMT" "tooling" "AI?" Throughout the map are numerous connecting arrows and lines showing relationships between concepts. Several bubbles contain handwriting that's too unclear to confidently transcribe, along with various time notations and red/pink annotations.
October 21, 2025 at 7:03 PM
matt.godbolt.org
Similar here in the outer edges of "war-torn" Chicago. Kids playing outside, folks walking their dogs in the uncommonly warm October afternoon. Some people have the audacity to water their lawns; unaware of the peril they're in!
Suffering in a war zone...not. me sat outside my house with my dog in beautiful sunshine and peace and quiet
October 5, 2025 at 6:12 PM
matt.godbolt.org
Well, poo. Post conference cold is common; after all the stress of preparing and presenting, being surrounded by humans in a confined space etc it's not too surprising that after the come down, one gets a sniffle. Unfortunately mine came with a side order of losing my sense of smell :/
Close up of a positive COVID test
September 29, 2025 at 5:30 PM
matt.godbolt.org
Sneaking retro computing into C++ conferences... An @inversephase.bsky.social t-shirt, @adriansdigitalbasement.com stickers on laptop and 6502 computers on the slides! #cppcon2025 #retrocomputing
Me in an InversePhase "Pretty 8 Machine" t shirt standing at a lectern. My laptop is festooned with stickers but prominent top left is Adrian's Digital Basement. On the screen behind me is a slide with "6502 Computers" including Atari 2600, BBC Micro, C64...and The Terminator and Bender from Futurama
September 21, 2025 at 7:57 PM
matt.godbolt.org
A decent photo of me! It can exist hehe
Me on stage. There's a purple light behind me, a table with compiler explorer mugs on. I'm standing mid sentence with my arms outreached in a kind of "magic trick" hocus pocus stance
September 20, 2025 at 1:47 PM
matt.godbolt.org
CiPPi joins me at the closing keynote!#als
Me standing at the podium with CiPPi, Rainer Grimm's avatar. #als
September 19, 2025 at 10:08 PM
matt.godbolt.org
All talk prep I could possibly do is now done. Time to go and nervously wait for my slot at #cppcon2025
Selfie in a hotel mirror of me trying to look posh. Wearing a navy blue button shirt which if you zoom in is actually dotted with millennium falcons
September 19, 2025 at 9:31 PM
matt.godbolt.org
Absolutely delighted to meet @lauriewired.bsky.social. They say you shouldn't meet your idols but Laurie was lovely and graciously let me get a selfie! If you don't follow her or subscribe to her YouTube channel; go to so now! youtube.com/@lauriewired
A selfie of Matt and LaurieWired. Matt is grinning like a Cheshire Cat
September 15, 2025 at 5:17 PM
matt.godbolt.org
Seems in stock as best I can tell?
Photo of a website showing dark green mug for sale
September 14, 2025 at 9:20 PM
matt.godbolt.org
Some photos!
Manic miner on the ZX Spectrum, seconds after me dying on the third level An Oric home computer A sadly recently deceased BBC Micro Me in my ZX Spectrum top in front of a pile of ZX Spectrums
September 13, 2025 at 7:22 PM
matt.godbolt.org
At #VCF Midwest. I have found my people
A car with the registration "MOS 6502"
September 13, 2025 at 5:41 PM
matt.godbolt.org
5th run-through... Audience seems uninterested :/
A black Labrador retriever looks balefully up from a sofa
September 11, 2025 at 4:49 PM
matt.godbolt.org
Ooh my copy of @lefticus.bsky.social's puzzle book just turned up! It gets Monty's seal of approval apparently too! Really looking forward to getting stuck into this...maybe I can get Jason to sign it at #CppCon2025! Get yours here: amzn.to/46abmZk
Me holding "Programming Puzzles Big Book" by Jason Turner. Monty, my black Labrador has decided to get in on the photo and is sat across my lap
September 6, 2025 at 11:48 PM
matt.godbolt.org
The sequence. Missing the OG mug that I gave to a few patrons years back as my own smashed :(
Four CE mugs showing a variety of designs Four mugs showing various CE logo sizes
August 25, 2025 at 5:53 PM
matt.godbolt.org
Finally got my own "final version" ABI mug! Really happy with how they came out!

Fancy one yourself? Get yours at shop.compiler-explorer.com ! All proceeds go to keeping the site running.
A photo of me holding up the Compiler Explorer system V ABI mug. It has a green handle and green inside. On the mug is the ABI for system V (Linux etc) A photo of me showing the other side of the nug which has the Compiler Explorer logo on it
August 25, 2025 at 5:21 PM
matt.godbolt.org
So that's where my hoodie went....(My 15yo has decided it fits him better. He's not wrong)
Torso of a teenager wearing a Compiler Explorer hoodie (in a kitchen)
August 22, 2025 at 11:18 PM
matt.godbolt.org
86 x86 63 ARM 44 windows 12 Risc V (And 7 t shirts!)
August 21, 2025 at 5:46 PM
matt.godbolt.org
Some more images:
A green-handled mug filled with tea. on the side of the mug is the x86-64 System V ABI My holding green-handled mug. You can see the Compiler Explorer logo on the mug
August 18, 2025 at 12:29 AM
matt.godbolt.org
If you're like me and can't remember if it's RCX or R8 for the fourth parameter... Get the Compiler Explorer ABI Mug: actual calling conventions for x86-64 System V, Windows, and ARM64. Support @godbolt.org: grab yours here -> shop.compiler-explorer.com/collections/...
August 17, 2025 at 10:02 PM
matt.godbolt.org
Be smarter! Go... er...what?
An android notification from Brilliant that has been truncated. It says: "be smarter. Go fart..."
July 31, 2025 at 6:51 PM