Verify that XPLAT_DLL_EXPORT is only defined when building the DLL, not when linking against it in the client application. Segmentation Fault / Heap Corruption
The previous version of xplatcppwindowsdll was functional but fragile. The updated version transforms it from a "glue layer" into a production-grade abstraction. xplatcppwindowsdll updated
This generates an updated xplatcppwindowsdll_export.h file containing the XPLAT_API macro, which automatically handles __declspec switching on Windows and visibility flags on Linux/macOS. 2. Update to C++20 Standard Verify that XPLAT_DLL_EXPORT is only defined when building
xplatcppwindowsdll now enforces a strict allocator boundary . The DLL exports explicit create_buffer() and destroy_buffer() functions that use a shared, process-local heap ( HeapCreate on Windows). All STL containers passed across the boundary now use this custom allocator by default. This generates an updated xplatcppwindowsdll_export
, they could build and test the Linux version without ever leaving their Windows environment. Building cross platform apps with C++ in Visual Studio 2022
C --> GError still occurs? G -- Yes --> H[Reinstall the application<br>creating the error] G -- No --> F H --> F
The /DELAYLOAD linker flag on Windows allows a DLL to be loaded only when its first function is called. An updater can replace the on-disk DLL during a quiescent period, and the next function call will load the new version. However, if the old version is still resident in memory, FreeLibrary must be called first—which is tricky if any threads are executing code inside it. Hot patching (rewriting function prologues to jump to new code) is possible but extremely fragile and not cross-platform.