Christophe Nasarre

How to support .NET Framework PDB format and source line with ISymUnmanagedReader After DIA and DbgHelp, time to dig into ISymUnmanagedReader to get its line in source code.

After DIA and DbgHelp, time to dig into ISymUnmanagedReader to get line and source information from .NET Framework symbols - chnasarre.medium.com/7663f9043b6b...

This is nice: thanks VS!

116 - Optimiser les Strings en .NET

1h40 de sujets techniques liés aux bons/mauvais usages des strings en .NET avec tout plein de questions pertinentes de @dvoituron.bsky.social, Adrien Clerbois et @peug.net.
Les ressources (outils, code source et vidéos) sont aussi disponibles.
devapps.ms/podcasts/116...

But where is my method code? DbgHelp comes to the rescue This post show how DbgHelp could help you figure out the line and source code of each managed methods from a .pdb file

Why would you need .pdb files for .NET assemblies? Don't their already contain all the needed metadata?
This post will show you how to extract the source code and line number information from the .pdb files generated by .NET compilers thanks to DbgHelp API.
chnasarre.medium.com/4188f862211d...

How to dump function symbols from a .pdb file Detail how to write a tool that generates a .sym file listing functions symbols with their address, size and signature from a .pdb file

I just implemented a tool accepting a .pdb file to generate a .sym file listing functions symbols. A first post (chnasarre.medium.com/9826fd4f251e...) shows the coding details.
I'm sharing my vibe coding experience using Cursor in a second longer one (chnasarre.medium.com/f957106a3e9f...)

I spent more time than expected to understand why my .NET profiler never received the event that would help me figuring out the GC mode (Server/Workstation) but Perfview and dotnet-trace did.
I needed to debug the CLR to realize that the event is emitted before the profiler gets initialized :^(

And now the profiler is deadlocking the GC :^(

When you realize that the C++ exceptions you get while debugging your complicated profiler code come from... the Windows anti-virus

DevDay 2025 - Bushidō Code | Developer Conference Belgium Join 500+ developers at DevDay 2025 on November 13th in Mons, Belgium. The largest tech conference in Wallonia. Code with honor, debug with courage.

Venez nous retrouver au DevDay 2025... et avec une ristourne de 20% avec ce code devday.be/ticket?disco... ;^)

En plus de venir discuter du "moins mauvais" usage des strings avec moi, beaucoup d'autres présentations sont très intéresantes.

A très bientôt !

If you want to recompile the .NET 10 RC2 clr to get a solution for VS2026, you should add "18 2026" to that line of runtime\eng\native\gen-buildsys.cmd.
Otherwise the build command will fail

GitHub - chrisnas/Techorama2025: Content for Techorama 2025 conference Content for Techorama 2025 conference. Contribute to chrisnas/Techorama2025 development by creating an account on GitHub.

The slides and source code for the two #Techorama sessions (including the duet with @kevingosse.net) are available in github.com/chrisnas/Tec...

Whaaaaaaat!!!!
My Astronomy Pix of the day app is broken :^(

Too bad it is not version 11111.11

Release 3.28.0 · DataDog/dd-trace-dotnet Summary [Tracer] Add Azure Service Bus instrumentation (#7413) [Tracer] add OTEL quartz autoinstrumentation (#7192) [Tracer] Add Azure Service Bus batching support (#7553) [Test Optimization] Fai...

The 3.28 release of the Datadog .NET profiler supports the new allocations sampling of .NET 10 that allows us to provide a much more statistically accurate view of your application memory!
github.com/DataDog/dd-t...
Thanks Noah Falk for his help on this ~2 years project :^)

I don't understand how people could use GPTs efficiently...
I'm looking for implementation details in the .NET runtime for the generation of gcdump and... ChatGPT and Deepseek are just hallucinating even when I'm pointing them to the current CLR main branch :^(

Tickets - Azure Dev Summit | Lisbon 13 - 16 Oct 2025 Azure Dev Summit is a 4-Day Event for Software Developers, 13-16 Oct in Lisbon, Portugal.

It is not too late to register to @azuredevsummit!
Here is a $200 discount code!
Discount code = spkrpromo
Registration link = azuredevsummit.com/tickets

P.S. Meet there to talk about strings in .NET and maybe win a signed copy of the second edition of Pro .NET Memory ;^)

Time to install VS 2026 now :^)

Live at WOMAD 1982, by Peter Gabriel 9 track album

Reminds me great Peter Gabriel french concerts in the 80s
petergabriel.bandcamp.com/album/live-a...

Did anyone ever tried to use the Wait Chain Transversal API with critical section?
- learn.microsoft.com/en-us/window... implies that it works for critical section but it does not
- the wait field always contain 0 for Mutex (I tried infinite and finite wait)

It seems that I mistyped the ZoomIt video recording shortcut...

Starting to look at GPUs...

Time for a break!

So many birds in Tanzania!

C'est vraiment très triste de perdre un tel talent de passeur de connaissances :^(
www.pourlascience.fr/sr/regards/r...

See you next year in Krakow!

When you are allocating a little bit more than usual...

One more year as Microsoft MVP Dev :^)

I really enjoyed participating to the last 2codeOrNot2code, so I'm happy to repeat the experience. This time, we will have some fun with functions, unveiling interesting details about what happens when you call them. If you like to understand how things work, don't miss it!

You entered the Mines of Moria... but instead of goblins, you fought off 17 hours of Instagram reels and 3 existential crises. Behold, your final boss: the algorithmic Balrog. 😂

@updateconference.bsky.social Crakow 2025 is over!
Great talks with slides hard to read... for the speaker and .NET quizzzz to win a copy of the Second edition of Pro .NET Memory Management
#UCK25