Date: Sat, 28 Apr 2001 01:27:33 +0200 From: "Dimitry Andric" <dim@xs4all.nl> To: "Joao Carlos Mendes Luis" <jonny@jonny.eng.br> Cc: stable@FreeBSD.ORG Subject: Re: Trouble with 4.3-RELEASE compiler Message-ID: <200104280127330789.011EEEF5@tensor.xs4all.nl> In-Reply-To: <20010427194022.A18639@roma.coe.ufrj.br> References: <20010427194022.A18639@roma.coe.ufrj.br>
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On 2001-04-27 at 19:40 Joao Carlos Mendes Luis wrote:
> I was installing a squid server with 4.3-RELEASE, and found that
>FreeBSD has now a bug in the compiler that affects squid. The
>default compilation of squid is with CFLAGS=3D-g -O2 -Wall, and this
>setup
>triggers the bug.
This is a fragment from the Squid configure file (from the original
2.4-STABLE1 distribution):
# Remove optimization for GCC 2.95.[12]
# gcc -O[2] on *BSD and Linux (x86) causes pointers to magically
become NULL
if test "$GCC" =3D "yes"; then
GCCVER=3D`$CC -v 2>&1 | awk '$2 =3D=3D "version" {print $3}'`
case "$GCCVER" in
2.95.[12])
echo "Removing -O for gcc on $host with GCC $GCCVER"
CFLAGS=3D"`echo $CFLAGS | sed -e 's/-O[0-9]*//'`"
;;
esac
fi
This was probably written before gcc 2.95.3 got out, but I'm not sure
if that version fixed the problem. I have foolishly tried to compile
Squid with gcc 2.95.2 and optimization (both -O, -O2 and -O666), and
I can assure you it bombed out with inexplicable null pointer
accesses. Yet when you compile with -O0, no such thing happens...
Maybe it's best to ask the Squid maintainer(s) if gcc 2.95.3 is
supported with optimization.
Cheers,
- --
Dimitry Andric <dim@xs4all.nl>
PGP key: http://www.xs4all.nl/~dim/dim.asc
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