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not_a_bijection

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  1. comment
    Comment #48428189

    I think fork() is more of a PDP-7 mistake than a PDP-11 mistake. On the original UNIX system, memory was so limited that the only sane partitioning was to write the running program…

  2. comment
    Comment #48141089

    Not in C, unless at least one of the pointers were marked `restrict`.

  3. comment
    Comment #47864211

    That's even more useful because of x86's braindamanged "setcc", which only affects the lowest byte of the destination, AFAIR, and so always has to be combined with a zeroing idiom …

  4. comment
  5. comment
    Comment #47864090

    You can do better. X86 has both "op [mem], reg" and "op reg, [mem]" variants of most instructions, where "[mem]" can be a register too. So you have two ways to encode "xor eax, eax…