4 ms·

> If you call memcpy in a way that calls malloc uh... How exactly? memcpy copies memory from one place in memory to another. That's all it does. There is no "

by mort96 4y ago

> If you call memcpy in a way that calls malloc uh... How exactly? memcpy copies memory from one place in memory to another. That's all it does. There is no "calling memcpy in a way that calls malloc".

newobj 4y ago
if dst and src in memcpy overlap, the result is UB. so there's your window of opportunity. well, you asked...
- mort96 4y ago
  Haha, you're right, it's technically allowed for memcpy to call malloc in that circumstance.
  - Tor3 4y ago
    memcpy wouldn't, but memmove would. memcpy doesn't check for or care about overlaps (and therefore the result is unpredictable - it'll depend on the implementation)