Posts for devblogs.microsoft.com on Oct 2026

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13 C++ futures part 5: std::future and std::shared_future - The Old New Thing

12 C++ futures part 4: What if I want an immediate on-thread std::async? - The Old New Thing

11 C++ futures part 3: The mental model for std::async - The Old New Thing

10 C++ futures part 2: The mental model for std::promise, std::packaged_task - The Old New Thing

9 C++ futures part 1: The mental model - The Old New Thing

8 One way of thinking about access specifiers in C++/WinRT implementation types - The Old New Thing

7 If one anti-malware software is good, does that make two better? - The Old New Thing

6 How can undefined opcodes ud0 and ud1 have parameters? How undefined were they? - The Old New Thing

5 Why does the compiler sometimes use ud2 and sometimes int 3 for code that shouldn't execute? - The Old New Thing

4 If somebody tries to hot-patch an already-hot-patched function, how do they avoid conflicts? - The Old New Thing

3 Why is there no Windows hot-patching support for other architectures like 32-bit ARM and MIPS? - The Old New Thing

2 Windows on Itanium also provided for hot-patching, in an even simpler way - The Old New Thing

1 Windows on AArch64 also provides for hot-patching, but it's much simpler than on x86 - The Old New Thing