[lwip-devel] [bug #51447] Sequence number comparisons invoke undefined behavior

[Valery Ushakov]

Follow-up Comment #6, bug #51447 (project lwip):

@abizjak - If you want to start nit-picking, you may at least try to be
careful about your own wording.  Your summary claims "undefined behavior", but
then you quote the relevant part of the standard that says
"implementation-defined behavior".

So, basically you complain that lwip assumes 2-complement.

@mywave - converting -1 to u32_t is done by repeatedly adding
("mathematically") UINT32_MAX+1, so (after just one iteration) you will get
the expected 0xffffffff

    _______________________________________________________

Reply to this item at:

  <http://savannah.nongnu.org/bugs/?51447>

_______________________________________________
  Message sent via/by Savannah
  http://savannah.nongnu.org/