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* Re: bootstrap/8146: gcc 3.2 miscompiles gcc 2.95.3
@ 2002-10-31 14:16 Joe Buck
0 siblings, 0 replies; 6+ messages in thread
From: Joe Buck @ 2002-10-31 14:16 UTC (permalink / raw)
To: nobody; +Cc: gcc-prs
The following reply was made to PR bootstrap/8146; it has been noted by GNATS.
From: Joe Buck <jbuck@synopsys.com>
To: gcc-gnats@gcc.gnu.org, gcc-bugs@gcc.gnu.org, prj@po.cwru.edu
Cc:
Subject: Re: bootstrap/8146: gcc 3.2 miscompiles gcc 2.95.3
Date: Thu, 31 Oct 2002 14:13:52 -0800
http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=8146
I'm marking this as high priority, even though it's not certain that
this is a
3.2 bug; it could be a 2.95.3 bug. At least, it should be investigated
in more
detail.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: bootstrap/8146: gcc 3.2 miscompiles gcc 2.95.3
@ 2002-12-11 15:46 Richard Henderson
0 siblings, 0 replies; 6+ messages in thread
From: Richard Henderson @ 2002-12-11 15:46 UTC (permalink / raw)
To: nobody; +Cc: gcc-prs
The following reply was made to PR bootstrap/8146; it has been noted by GNATS.
From: Richard Henderson <rth@redhat.com>
To: Joe Buck <jbuck@synopsys.com>
Cc: gcc-gnats@gcc.gnu.org, gcc-bugs@gcc.gnu.org, hjl@gnu.org, prj@po.cwru.edu
Subject: Re: bootstrap/8146: gcc 3.2 miscompiles gcc 2.95.3
Date: Wed, 11 Dec 2002 15:36:00 -0800
On Fri, Nov 08, 2002 at 05:04:38PM -0800, Joe Buck wrote:
> This PR is now fixed on the branch, but not in the mainline; I have just
> verified
> that we still get the same failure.
>
> Should HJ's patch be applied to the mainline as well?
No. A different patch was intended to fix this problem on
mainline.
r~
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: bootstrap/8146: gcc 3.2 miscompiles gcc 2.95.3
@ 2002-11-08 17:06 Joe Buck
0 siblings, 0 replies; 6+ messages in thread
From: Joe Buck @ 2002-11-08 17:06 UTC (permalink / raw)
To: nobody; +Cc: gcc-prs
The following reply was made to PR bootstrap/8146; it has been noted by GNATS.
From: Joe Buck <jbuck@synopsys.com>
To: gcc-gnats@gcc.gnu.org, gcc-bugs@gcc.gnu.org, hjl@gnu.org, prj@po.cwru.edu
Cc:
Subject: Re: bootstrap/8146: gcc 3.2 miscompiles gcc 2.95.3
Date: Fri, 08 Nov 2002 17:04:38 -0800
http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=8146
This PR is now fixed on the branch, but not in the mainline; I have just
verified
that we still get the same failure.
Should HJ's patch be applied to the mainline as well?
I will be taking this PR as [mainline regression] now.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: bootstrap/8146: gcc 3.2 miscompiles gcc 2.95.3
@ 2002-11-08 13:56 Joe Buck
0 siblings, 0 replies; 6+ messages in thread
From: Joe Buck @ 2002-11-08 13:56 UTC (permalink / raw)
To: nobody; +Cc: gcc-prs
The following reply was made to PR bootstrap/8146; it has been noted by GNATS.
From: Joe Buck <jbuck@synopsys.com>
To: gcc-gnats@gcc.gnu.org, gcc-bugs@gcc.gnu.org, prj@po.cwru.edu
Cc:
Subject: Re: bootstrap/8146: gcc 3.2 miscompiles gcc 2.95.3
Date: Fri, 08 Nov 2002 13:54:38 -0800
http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=8146
This is fixed on the branch by HJ's patch:
2002-11-07 H.J. Lu <hjl@gnu.org>
Fix bootstrap/8146 and
gcc.c-torture/execute/20020307-2.c with -march=i686.
* calls.c (PUSH_ARGS_REVERSED): Define only if not defined.
* expr.c (PUSH_ARGS_REVERSED): Likewise.
* config/i386/i386.h (PUSH_ARGS_REVERSED): Set to 1.
Does this bug affect the mainline?
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: bootstrap/8146: gcc 3.2 miscompiles gcc 2.95.3
@ 2002-10-23 16:46 Janis Johnson
0 siblings, 0 replies; 6+ messages in thread
From: Janis Johnson @ 2002-10-23 16:46 UTC (permalink / raw)
To: nobody; +Cc: gcc-prs
The following reply was made to PR bootstrap/8146; it has been noted by GNATS.
From: Janis Johnson <janis187@us.ibm.com>
To: gcc-gnats@gcc.gnu.org, gcc-prs@gcc.gnu.org, gcc-bugs@gcc.gnu.org,
nobody@gcc.gnu.org, prj@po.cwru.edu
Cc:
Subject: Re: bootstrap/8146: gcc 3.2 miscompiles gcc 2.95.3
Date: Wed, 23 Oct 2002 16:38:23 -0700
I tried this (bootstrapping GCC 2.95.3) with 3.2 that I built from a
release tarball and with the 3.2 branch updated an hour or so ago, and
with both of them I get the same bootstrap comparison failures that
were reported in the PR:
Bootstrap comparison failure!
cccp.o differs
f/data.o differs
f/target.o differs
This was on i686-pc-linux-gnu, with an old Caldera distribution plus
binutils 2.12.1.
http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=8146
^ permalink raw reply [flat|nested] 6+ messages in thread
* bootstrap/8146: gcc 3.2 miscompiles gcc 2.95.3
@ 2002-10-04 10:46 prj
0 siblings, 0 replies; 6+ messages in thread
From: prj @ 2002-10-04 10:46 UTC (permalink / raw)
To: gcc-gnats
>Number: 8146
>Category: bootstrap
>Synopsis: gcc 3.2 miscompiles gcc 2.95.3
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: unassigned
>State: open
>Class: wrong-code
>Submitter-Id: net
>Arrival-Date: Fri Oct 04 10:46:00 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator: Paul Jarc
>Release: 3.2
>Organization:
>Environment:
System: Linux multivac.cwru.edu 2.4.19 #1 SMP Mon Aug 5 11:15:13 EDT 2002 i686 unknown
Architecture: i686
host: i686-pc-linux-gnu
build: i686-pc-linux-gnu
target: i686-pc-linux-gnu
configured with: ../gcc-3.2/configure --prefix=/package/host/localhost/gcc-3.2 --with-as=/package/host/localhost/gcc-3.2/conf/as --with-ld=/package/host/localhost/gcc-3.2/conf/ld --enable-threads --enable-libgcj --disable-nls
glibc 2.2.5
binutils 2.13
>Description:
If I start with gcc 3.2 and try to bootstrap gcc 2.95.3, I get
a bootstrap comparison failure. The documentation says that this
usually indicates that the host compiler (gcc 3.2 here) miscompiled
gcc (2.95.3).
Bootstrap comparison failure!
cccp.o differs
f/data.o differs
f/target.o differs
make[1]: *** [compare-lean] Error 1
3.1 and 3.1.1 also fail to bootstrap 2.95.3. IIRC, 3.1 had
differences only in cccp.o.
I suggest adding bootstrapping old versions to the pre-release
testing procedure. Having a buggy compiler is bad; having one
that is buggy in such a way as to complicate downgrading to a
not-known-to-me-to-be-buggy version is worse.
(I was able to downgrade by doing "make install" after the failing
"make bootstrap", and then using that incomplete 2.95.3 to do a
successful bootstrap of a new 2.95.3.)
>How-To-Repeat:
Build 2.95.3 using 3.2. I think you already have the relevant
source files. :) Files from my build or installation
directories of 3.2 or 2.95.3 are available on request.
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2002-12-11 23:46 UTC | newest]
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2002-10-31 14:16 bootstrap/8146: gcc 3.2 miscompiles gcc 2.95.3 Joe Buck
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2002-12-11 15:46 Richard Henderson
2002-11-08 17:06 Joe Buck
2002-11-08 13:56 Joe Buck
2002-10-23 16:46 Janis Johnson
2002-10-04 10:46 prj
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