From: Jason Mancini <jayrusman@hotmail.com>
To: <gcc-help@gcc.gnu.org>
Subject: infinite for-loop and related question
Date: Wed, 16 Feb 2011 20:17:00 -0000 [thread overview]
Message-ID: <SNT106-W3B382A5342E9FE1D26967ABD20@phx.gbl> (raw)
Hello,
So as I recall, the following can be an infinite loop now with optimizations, right?
for (int i(1); i!=0; ++i) { ... }
What about:
unsigned int x = 0xFFFFFFFFU;
x = x+1;
if (x) { ... can we get here because "positive x + 1 must still positive"? ... }
If not, given the first, why not?
Thanks,
Jason Mancini
next reply other threads:[~2011-02-16 20:09 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-16 20:17 Jason Mancini [this message]
2011-02-16 20:41 ` Jonathan Wakely
2011-02-16 21:37 ` Jason Mancini
2011-02-16 21:49 ` Bob Plantz
2011-02-16 23:00 ` Jonathan Wakely
2011-02-16 23:22 ` Thomas Martitz
2011-02-17 6:31 ` Jonathan Wakely
2011-02-17 10:36 ` Axel Freyn
2011-02-17 12:23 ` Jonathan Wakely
2011-02-17 13:16 ` Axel Freyn
2011-02-17 14:08 ` Jonathan Wakely
2011-02-16 23:00 Bill McEnaney
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