4 ms·

Except clang's behaviour changes depending on the optimisation level. If you use -O1, then you get a different result.

• mpweiher 8y ago
  Yes, because the pointers are different at -O. As there are no guarantees as to the relative placement of auto/stack variables relative to each other, that is perfectly fine.
  • shakna 8y ago
    If the behaviour differs at optimisation levels, would that not suggest that it is not a sane behaviour?
    • mpweiher 8y ago
      Not in this case, no, not at all. Finding a different layout for auto variable in the stack frame at different optimization levels is perfectly fine.
• deleted 8y ago
  [deleted]