The tradeoff is complexity. The microcode must be carefully arranged so that the instructions in delay slots are either useful setup for both paths, or at least harmless if the redirect fires. Not every case is as clean as RETF. When a PLA redirect interrupts an LCALL, the return address is already pushed onto the microcode call stack (yes, the 386 has a microcode call stack) -- the redirected code must account for this stale entry. When multiple protection tests overlap, or when a redirect fires during a delay slot of another jump, the control flow becomes hard to reason about. During the FPGA core implementation, protection delay slot interactions were consistently the most difficult bugs to track down.
Юлия Мискевич (Ночной линейный редактор)
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Cuba’s president, Miguel Díaz-Canel, wrote on X that the Caribbean country would “defend itself with determination and firmness” after the incident in which six other people on the boat were injured.
Now, to be certain, these types of issues are implementation bugs. The connection leak was definitely something that undici needed to fix in its own implementation, but the complexity of the specification does not make dealing with these types of issues easy.