i386/51210: gcc compiler bug with floating point

David Schultz das at FreeBSD.ORG
Fri May 2 04:50:24 PDT 2003


The following reply was made to PR i386/51210; it has been noted by GNATS.

From: David Schultz <das at FreeBSD.ORG>
To: ura at euro-bill.net
Cc: FreeBSD-gnats-submit at FreeBSD.ORG
Subject: Re: i386/51210: gcc compiler bug with floating point
Date: Fri, 2 May 2003 04:42:57 -0700

 On Mon, Apr 21, 2003, ura at euro-bill.net wrote:
 > ttyp4 ~> gcc -v
 > Using built-in specs.
 > Configured with: FreeBSD/i386 system compiler
 > Thread model: posix
 > gcc version 3.2.1 [FreeBSD] 20021119 (release)
 > 
 > >Description:
 > When libm(msun) built with -march=pentium4, pow(3) returns incorrect
 > results.
 > >How-To-Repeat:
 > You must have pentium4 processor.
 
 gcc 3.2 is known broken in this regard.  It is more helpful if you
 can report this kind of problem to the gcc folks; we don't write
 the compiler.  BTW, does this still happen with a gcc 3.3 snapshot?


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