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I've worked on a system where NULL mapped to valid memory. (It was an embedded system, so the memory map was custom and bizarre). Of course, insanity ensued w

by efaref 12y ago

I've worked on a system where NULL mapped to valid memory. (It was an embedded system, so the memory map was custom and bizarre). Of course, insanity ensued when new programmers worked on it.

astrobe_ 12y ago
Is it the kind of system for which memset(somestruct, 0, sizeof(somestruct)) doesn't work if the struct has pointers (NULL isn't 0, so null checks will fail if one inits such struct like this)?
- Aissen 12y ago
  Not really, NULL is still 0, but the address "0" is valid and readable/writable.
- EpicEng 12y ago
  NULL does not have to be 0 in the sense that it is represented by all 0 bits, it need only compare equal to 0.
JoeAltmaier 12y ago
Yeah but to fix that, you only have to not use that byte of memory. Or not have to point to it. Not a real issue.