Yeah, I was really into that before there was even a cross-compiler/cross-platform syntax for declaring TLS values in C++ but have since “upgraded” to avoiding

Yeah, I was really into that before there was even a cross-compiler/cross-platform syntax for declaring TLS values in C++ but have since “upgraded” to avoiding TLS altogether where possible. The quality of the implementations vary greatly from compiler and platform to compiler and platform, you run into weird issues with thread_at exit if they’re not primitive types, they run afoul of any fibers/coroutines/etc that have since become extremely prevalent, and a few other things.