2019 ((install)) - C++

Frustrated, he opened the and ran dumpbin /symbols VoxelGrid.obj .

He tried the classic "Clean Solution" — no change. He deleted the .vs folder — no change. He turned off precompiled headers — no change. He whispered an ancient mantra: "It’s not the compiler, it’s you." — still no change. c++ 2019

He clicked .

In the .cpp file, he had written: void VoxelGrid::serialize(Archive& ar) { Frustrated, he opened the and ran dumpbin /symbols VoxelGrid

Leo laughed. It was a hollow, sleep-deprived laugh that turned into a cough. He added the const , rebuilt, and the linker error vanished. The executable spun to life. He turned off precompiled headers — no change

VS2019’s IntelliSense had auto-completed the signature in the .cpp file from a previous version of the header. It was a silent, invisible mismatch. The compiler saw them as two entirely different functions. One was implemented. One was pure virtual and missing. The linker, as always, took the blame.

?serialize@VoxelGrid@@UEAAXAEAVArchive@@@Z (in the header's expectation)