This is a case where the abstractions of the C programming language start to break down. 0 is indeed a null pointer constant in C, but the hardware sees 0 as a memory address like any other. Some systems have nothing valid there, but some other systems (like this one) put exception vectors at this location. When certain types of hardware interrupts or exceptions happen, the CPU jumps to certain fixed addresses around address 0 (the specific types of exceptions and the specific addresses are a property of the CPU architecture).
В России призвали отпустить больную раком Лерчек из-под домашнего ареста14:50
，更多细节参见wps
В рыболовной сети нашли 15-метровую тушу редкого кита20:45，详情可参考谷歌
Stage 1 was a big milestone, but it was still far from the finish line. After the initial burst of energy, progress naturally slowed. Maggie and Matt Johnson-Pint were leading the effort alongside Brian Terlson, while simultaneously balancing other responsibilities inside Microsoft. Temporal was still early enough that much of the immediate work was unglamorous: requirements gathering, clarifying semantics, and translating "the ecosystem's pain" into a design that could actually ship.