optimization/3357: wrong optimization with option '-O3'

[Andreas dot Krakowczyk at fujitsu-siemens dot com]

>Number:         3357
>Category:       optimization
>Synopsis:       wrong optimization with option '-O3'
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Jun 22 03:06:00 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator:     Andreas Krakowczyk
>Release:        gcc-3.0
>Organization:
>Environment:
sparc-sun-solaris2.8
>Description:
program gives incorrect result when compiled with option '-O3'
>How-To-Repeat:
gcc -O3 bug6.c && ./a.out
>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted:
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