C++ 2019 May 2026

He had missed the const .

Scrolling through the mangled output, he saw it. A tiny, horrifying difference:

Then, at 11:47 PM, it happened.

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

He closed Visual Studio, which took an unusually long time to shut down, as if it was reluctant to let him go. He leaned back, looked at the rain, and thought: I could have written this in Rust. But then who would keep the ghosts of C++ alive? c++ 2019

In the .cpp file, he had written: void VoxelGrid::serialize(Archive& ar) {

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 had missed the const

His eyes darted to the calling convention. UEAAX vs UEAAX … no. Then he saw it. The const -ness of the Archive& parameter.