The Old New Thing

What does the SizeOfImage mean in the MODULEINFO structure?

Raymond Chen October 15, 2021 Oct 15, 2021 10/15/21

It's the size in terms of mapped address space when loaded.

Why does GetModuleInfo fail to produce an entry point for executables?

Raymond Chen October 14, 2021 Oct 14, 2021 10/14/21

Because it's getting the information from the loader, who has no use for such things.

Local variables are different from parameters in C++ coroutines

Raymond Chen October 13, 2021 Oct 13, 2021 10/13/21

You tend to think of them the same, but they destruct differently.

The happy hand: A puzzle about odd names in Azure DevOps

Raymond Chen October 12, 2021 Oct 12, 2021 10/12/21

Who's renaming everything into something cute?

Is there a way that my macro can detect that it’s running in a C++ coroutine?

Raymond Chen October 11, 2021 Oct 11, 2021 10/11/21

You are part of the decision.

What can I do about timer build-up when waiting for COM outbound calls to complete?

Raymond Chen October 8, 2021 Oct 8, 2021 10/8/21

You'll have to drain them out yourself.

Debugging coroutine handles: The Microsoft Visual C++ compiler, clang, and gcc

Raymond Chen October 7, 2021 Oct 7, 2021 10/7/21

Peeking behind the curtain.

Why is the main() function always at address 0x00401000 in a simple program?

Raymond Chen October 6, 2021 Oct 6, 2021 10/6/21

When multiple technical decision add up, literally.

Not from inside the Redmond Reality Distortion Field: Microsoft Streets and Trips support for ferries

Raymond Chen October 5, 2021 Oct 5, 2021 10/5/21

From somebody else's reality distortion field.

Some lesser-known powers of std::optional

Raymond Chen October 4, 2021 Oct 4, 2021 10/4/21

Things it does that you may not know about.