I was under the impression that I could, in principle, do multi-threading with hundreds of threads simultaneously (regardless if it makes sense). But this code throws a std::system_error at memory location… when commenting in 16 “folders” (works still fine with 10) which corresponds to (only!) 16 threads:

#include <iostream>
#include <thread>
#include <vector>

void function_t(const std::string& folder) {
   std::cout << "Processing folder: " << folder << std::endl;
}

int main(int argc, char* argv[])
{
   std::vector<std::string> folders{ 
      std::string("1"), 
      std::string("2"), 
      std::string("3"), 
      std::string("4"), 
      std::string("5"), 
      std::string("6"), 
      std::string("7"), 
      std::string("8"), 
      std::string("9"), 
      std::string("10"),
//    std::string("11"), // Commenting in these lines throws an error. 
//    std::string("12"),
//    std::string("13"), 
//    std::string("14"), 
//    std::string("15"), 
//    std::string("16") 
   };

   std::vector<std::thread> threads{};

   for (const std::string& folder : folders) {
      threads.emplace_back(function_t, folder);
   }

   for (std::thread& thread : threads) {
      thread.join();
   }

   return 0;
}

Why is that so – and can I work around it? I’m on Windows / Visual Studio 22.

(The point is not if it MAKES SENSE to spawn 100 threads, I only try to understand where the principle limitation comes from.)