A user asks for pre-made handheld device platforms combining a microcontroller, screen, enclosure, and battery that can be programmed immediately without hardware assembly. They seek ready-to-use solutions to focus on software development rather than hardware engineering.
C++26 fixes undefined behavior in trivial infinite loops like while(true); through proposal P2809R3, making them well-defined by replacing the loop body with std::this_thread::yield(). This change addresses a real vulnerability in embedded and kernel code where such loops serve as halt-on-error patterns, preventing compilers from optimizing away the loop and causing execution to fall through into unexpected code.