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by Someone
2500 days ago
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That is platform dependent, and doesn’t matter. NULL need not be the ‘all zeroes’ bit pattern (1), and even if it did, the C standard says dereferencing a NULL pointer leads to undefined behavior (https://en.wikipedia.org/wiki/Null_pointer#Null_dereferencin...) (1) Recent C standards have peddled back a bit on ‘it should be possible to write a confirming C compiler for every CPU ever made’ (for example, IIRC, by fixing a char to be 8 bits), so that might be a thing of the past. |
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