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[Bug c/48793] Optimization -O2 Incorrectly Removes Logic
- From: "chris at durso dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 27 Apr 2011 22:36:30 +0000
- Subject: [Bug c/48793] Optimization -O2 Incorrectly Removes Logic
- Auto-submitted: auto-generated
- References: <bug-48793-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48793
--- Comment #2 from Chris DUrso <chris at durso dot org> 2011-04-27 22:36:16 UTC ---
Hi Andreas,
Are you saying that
myInteger = -myInteger;
or
if( myInteger < 0 )
is undefined for the integer MIN_INT?
Read a little closer, the overflow/underflow/abs are just examples. The
problem is that the second if-statement is apparently optimized away.