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* optimization/7122: -o2 processed floating point code generates bogus NaN
@ 2002-06-25 11:16 hanelyp
0 siblings, 0 replies; 2+ messages in thread
From: hanelyp @ 2002-06-25 11:16 UTC (permalink / raw)
To: gcc-gnats
>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:
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: optimization/7122: -o2 processed floating point code generates bogus NaN
@ 2003-03-11 22:48 neroden
0 siblings, 0 replies; 2+ messages in thread
From: neroden @ 2003-03-11 22:48 UTC (permalink / raw)
To: gcc-bugs, gcc-prs, hanelyp, nobody
Synopsis: -o2 processed floating point code generates bogus NaN
State-Changed-From-To: feedback->closed
State-Changed-By: neroden
State-Changed-When: Tue Mar 11 22:48:12 2003
State-Changed-Why:
No feedback 3 mo.
http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=7122
^ permalink raw reply [flat|nested] 2+ messages in thread
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2002-06-25 11:16 optimization/7122: -o2 processed floating point code generates bogus NaN hanelyp
2003-03-11 22:48 neroden
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