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not_a_bijection
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- Wed, Apr 22, 2026, 2:19 PM UTC
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Recent public activity
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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…
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Comment #48141089
Not in C, unless at least one of the pointers were marked `restrict`.
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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 …
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Comment #47864157
[dead]
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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…