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From: hanelyp@calweb.com
To: gcc-gnats@gcc.gnu.org
Subject: optimization/7122: -o2 processed floating point code generates bogus NaN
Date: Tue, 25 Jun 2002 11:16:00 -0000 [thread overview]
Message-ID: <20020625173742.8462.qmail@sources.redhat.com> (raw)
>Number: 7122
>Category: optimization
>Synopsis: -o2 processed floating point code generates bogus NaN
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: unassigned
>State: open
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Tue Jun 25 10:46:01 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator: hanelyp@calweb.com
>Release: gcc 2.96 20000731 (redhat linux 7.1 2.96-98)
>Organization:
>Environment:
redhat linux 7.2
cygwin
>Description:
compiling with -o2 produces bogus floating point NaN. Same generated code may work right sometimes and not others. Libraries (presumably built with this option) are affected, including atof(), sin(), cos()
call to printf() appears to patch bug in some cases.
>How-To-Repeat:
bug encountered developing http://www.calweb.com/~hanelyp/treecad/
>Fix:
As an interum, avoiding this optomization with floating point code.
>Release-Note:
>Audit-Trail:
>Unformatted:
next reply other threads:[~2002-06-25 17:46 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-06-25 11:16 hanelyp [this message]
2003-03-11 22:48 neroden
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