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Re: optimization/7726: Fails to produce the correct implementation-dependant output for loop optimization under x86 -> optimizes away a loop that should complete
- From: bangerth at dealii dot org
- To: carlos at baldric dot uwo dot ca, gcc-bugs at gcc dot gnu dot org, gcc-prs at gcc dot gnu dot org, nobody at gcc dot gnu dot org
- Date: 6 Dec 2002 21:01:31 -0000
- Subject: Re: optimization/7726: Fails to produce the correct implementation-dependant output for loop optimization under x86 -> optimizes away a loop that should complete
- Reply-to: bangerth at dealii dot org, carlos at baldric dot uwo dot ca, gcc-bugs at gcc dot gnu dot org, gcc-prs at gcc dot gnu dot org, nobody at gcc dot gnu dot org, gcc-gnats at gcc dot gnu dot org
Synopsis: Fails to produce the correct implementation-dependant output for loop optimization under x86 -> optimizes away a loop that should complete
State-Changed-From-To: open->feedback
State-Changed-By: bangerth
State-Changed-When: Fri Dec 6 13:01:29 2002
State-Changed-Why:
Hm, the code goes into an endless loop on my system also
without optimization and with all the compilers I have
(i.e. gcc2.95, 3.0, 3.2, 3.2.2pre, 3.3pre, and icc7).
Are you sure that the overflow you are exploiting is
really defined in ISO C?
http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=7726