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Optimizations and undefined behavior

Posted Jul 30, 2009 15:04 UTC (Thu) by foom (subscriber, #14868)
In reply to: Optimizations and undefined behavior by forthy
Parent article: Fun with NULL pointers, part 1

> I remember GCC taking out tests like if(x+n>x)

Still does. You can use -fwrapv if you want to tell it that you want signed number overflow to be
defined as wrapping.

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