State-Changed-From-To: open->feedback
State-Changed-Why: Hm, I cannot reproduce the problem you have with a recent
    snapshot. What is the result for you when you call ./a.out?
    Is it an abort or a call to terminate()?
    
    Also, note that with you code you do not make any use of
    the symbols declared within the second file at all.
    
    W.

From: Wolfgang Bangerth <bangerth@ticam.utexas.edu>
To: Robert Schiele <rschiele@uni-mannheim.de>
Cc: cc@pi3.informatik.uni-mannheim.de, <gcc-bugs@gcc.gnu.org>,
   <gcc-gnats@gcc.gnu.org>, Andreas Jaeger <aj@suse.de>
Subject: Re: c++/9265: exception handling faulty wenn linking PIC objects to
 non PIC ones
Date: Mon, 13 Jan 2003 17:36:53 -0600 (CST)

   This message is in MIME format.  The first part should be readable text,
   while the remaining parts are likely unreadable without MIME-aware tools.
   Send mail to mime@docserver.cac.washington.edu for more info.
 
 --1400906564-1057649632-1042501013=:14754
 Content-Type: TEXT/PLAIN; charset=US-ASCII
 
 
 > Wolfgang could you send me the crtbegin.o files from the compilers
 > that you tried?
 
 Attached is the crtbegin.o from the gcc3.2.2 snapshot (2002-12-13) I use, 
 compiled on the SuSE machine. This should be closest to your 
 configuration.
 
 W.
 
 -------------------------------------------------------------------------
 Wolfgang Bangerth             email:            bangerth@ticam.utexas.edu
                               www: http://www.ticam.utexas.edu/~bangerth/
 
 
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From: Robert Schiele <rschiele@uni-mannheim.de>
To: Wolfgang Bangerth <bangerth@ticam.utexas.edu>
Cc: cc@pi3.informatik.uni-mannheim.de, gcc-bugs@gcc.gnu.org,
	gcc-gnats@gcc.gnu.org, Andreas Jaeger <aj@suse.de>,
	Volker Reichelt <reichelt@igpm.rwth-aachen.de>,
	Christian Ehrhardt <ehrhardt@mathematik.uni-ulm.de>
Subject: Re: c++/9265: exception handling faulty wenn linking PIC objects to non PIC ones
Date: Tue, 14 Jan 2003 00:29:51 +0100

 --azLHFNyN32YCQGCU
 Content-Type: text/plain; charset=us-ascii
 Content-Disposition: inline
 Content-Transfer-Encoding: quoted-printable
 
 On Mon, Jan 13, 2003 at 04:42:07PM -0600, Wolfgang Bangerth wrote:
 >=20
 > > > I have mainline snapshots from the last two years for about every two=
 =20
 > > > weeks, and none of them shows the behavior you see.
 > >=20
 > > You still didn't answer my question, which binutils you use.  Might be
 > > this information is of some use to understand the problem.
 >=20
 > I'm sorry. For the RedHat machine with the snapshot collection, it's=20
 > 2.11.90.0.8, for the SuSE machine it's 2.11.92.0.10.
 
 Hmm, SuSE 8.1 has 2.12.90.0.12.  Is someone else with 2.12.x.x.x here
 to test this?
 
 > > > What do we do with this report?
 > >=20
 > > I hope you do not ignore it.  My colleague and I have invested some
 > > time to track this down to such a simple test case.  (The real world
 > > test case were megabytes of code.)
 >=20
 > I have no intention to _ignore_ the report, otherwise I would have closed=
 =20
 > it after not being able to reproduce it. On the other hand, we rely on=20
 > being able to reproduce a problem to fix it, right?
 
 Yes you are right.  Sorry, might be I was a bit too harsh here.  Hope
 you don't mind.
 
 > Volker, Christian, can one of you try to check this report on your=20
 > systems? I think I have to pull out of this since I can't contribute=20
 > anything any more...
 
 Well, I did some more testing and found the following:
 
 If I do compile and link with gcc 3.2.1, the resulting application is
 faulty.  Linking is done by:
 
 /opt/Pkg/Linux/i686/gcc321/lib/gcc-lib/i486-suse-linux/3.2.1/collect2 --eh-=
 frame-hdr -m elf_i386 -dynamic-linker /lib/ld-linux.so.2 /usr/lib/crt1.o /u=
 sr/lib/crti.o /opt/Pkg/Linux/i686/gcc321/lib/gcc-lib/i486-suse-linux/3.2.1/=
 crtbegin.o -L/opt/Pkg/Linux/i686/gcc321/lib/gcc-lib/i486-suse-linux/3.2.1 -=
 L/opt/Pkg/Linux/i686/gcc321/lib/gcc-lib/i486-suse-linux/3.2.1/../../.. pic.=
 o nopic.o -lstdc++ -lm -lgcc_s -lgcc -lc -lgcc_s -lgcc /opt/Pkg/Linux/i686/=
 gcc321/lib/gcc-lib/i486-suse-linux/3.2.1/crtend.o /usr/lib/crtn.o
 
 If I replace _only_ crtbegin.o with the one from gcc 3.2 release, the
 resulting application works perfectly sane.  So the bug must be
 somewhere in crtstuff.  Well crtstuff.c itself was not changed, so
 this must be something in a file included from there.  Or the reason
 is that I have built the 3.2 release with binutils 2.11.x.x.x where I
 have built the other compilers with 2.12.x.x.x.
 
 Wolfgang could you send me the crtbegin.o files from the compilers
 that you tried?
 
 Robert
 
 --=20
 Robert Schiele			Tel.: +49-621-181-2517
 Dipl.-Wirtsch.informatiker	mailto:rschiele@uni-mannheim.de
 
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From: Robert Schiele <rschiele@uni-mannheim.de>
To: Wolfgang Bangerth <bangerth@ticam.utexas.edu>
Cc: cc@pi3.informatik.uni-mannheim.de, gcc-bugs@gcc.gnu.org,
	gcc-gnats@gcc.gnu.org, Andreas Jaeger <aj@suse.de>
Subject: Re: c++/9265: exception handling faulty wenn linking PIC objects to non PIC ones
Date: Tue, 14 Jan 2003 08:03:01 +0100

 --ReaqsoxgOBHFXBhH
 Content-Type: text/plain; charset=us-ascii
 Content-Disposition: inline
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 On Mon, Jan 13, 2003 at 05:36:53PM -0600, Wolfgang Bangerth wrote:
 >=20
 > > Wolfgang could you send me the crtbegin.o files from the compilers
 > > that you tried?
 >=20
 > Attached is the crtbegin.o from the gcc3.2.2 snapshot (2002-12-13) I use,=
 =20
 > compiled on the SuSE machine. This should be closest to your=20
 > configuration.
 
 Thanks.  With your crtbegin.o it also works for me.  So I will try to
 build a gcc 3.2 with binutils 2.12.x.x.x to check whether it makes a
 difference which binutils are used to build the compiler.
 
 Robert
 
 --=20
 Robert Schiele			Tel.: +49-621-181-2517
 Dipl.-Wirtsch.informatiker	mailto:rschiele@uni-mannheim.de
 
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From: Robert Schiele <rschiele@uni-mannheim.de>
To: Wolfgang Bangerth <bangerth@ticam.utexas.edu>
Cc: cc@pi3.informatik.uni-mannheim.de, gcc-bugs@gcc.gnu.org,
	gcc-gnats@gcc.gnu.org, Andreas Jaeger <aj@suse.de>
Subject: Re: c++/9265: exception handling faulty wenn linking PIC objects to non PIC ones
Date: Tue, 14 Jan 2003 10:05:00 +0100

 --wac7ysb48OaltWcw
 Content-Type: text/plain; charset=us-ascii
 Content-Disposition: inline
 Content-Transfer-Encoding: quoted-printable
 
 On Tue, Jan 14, 2003 at 08:03:01AM +0100, Robert Schiele wrote:
 > Thanks.  With your crtbegin.o it also works for me.  So I will try to
 > build a gcc 3.2 with binutils 2.12.x.x.x to check whether it makes a
 > difference which binutils are used to build the compiler.
 
 Well, I got the switch that triggers it: HAVE_LD_EH_FRAME_HDR
 
 If this Macro was defined, the crtbegin code cannot handle the
 situation I described in the bug report.  Without it can handle the
 situation quite sane.  This is the case with _all_ compilers since 3.2
 release.  (I haven't an older one at hand to test.)
 
 Obviously this switched is on if you used binutils 2.12.x.x.x at
 configure time as they support this feature, but 2.11.x.x.x do not and
 such it is turned off there.  So it is perfectly clear now, why you
 couldn't reproduce the problem.
 
 This means the problem obviously is in the crtstuff code that handles
 eh_frame_hdr stuff.
 
 So we need some binutils gurus here.
 
 Robert
 
 --=20
 Robert Schiele			Tel.: +49-621-181-2517
 Dipl.-Wirtsch.informatiker	mailto:rschiele@uni-mannheim.de
 
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From: Robert Schiele <rschiele@uni-mannheim.de>
To: Jakub Jelinek <jakub@redhat.com>
Cc: cc@pi3.informatik.uni-mannheim.de, gcc-bugs@gcc.gnu.org,
	gcc-gnats@gcc.gnu.org
Subject: Re: c++/9265: exception handling faulty wenn linking PIC objects to non PIC ones
Date: Tue, 14 Jan 2003 23:37:22 +0100

 --dDRMvlgZJXvWKvBx
 Content-Type: text/plain; charset=us-ascii
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 Hello Jakub.
 
 As you did some of the recent changes related to .eh_frame_hdr stuff
 in crtstuff, I expect you to be able to give some comments on c++/9265
 or at least can name a person that should have an idea what the
 problem could be.
 
 Robert
 
 --=20
 Robert Schiele			Tel.: +49-621-181-2517
 Dipl.-Wirtsch.informatiker	mailto:rschiele@uni-mannheim.de
 
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From: Jakub Jelinek <jakub@redhat.com>
To: Robert Schiele <rschiele@uni-mannheim.de>
Cc: cc@pi3.informatik.uni-mannheim.de, gcc-bugs@gcc.gnu.org,
   gcc-gnats@gcc.gnu.org
Subject: Re: c++/9265: exception handling faulty wenn linking PIC objects to non PIC ones
Date: Tue, 4 Feb 2003 15:19:06 -0500

 On Tue, Feb 04, 2003 at 08:43:55PM +0100, Robert Schiele wrote:
 > On Tue, Jan 14, 2003 at 11:37:22PM +0100, Robert Schiele wrote:
 > > Hello Jakub.
 > 
 > Hello, did you miss my last message?  Could you give a comment on the
 > issue, or at least state that you can't/won't for any reason?
 > 
 > > As you did some of the recent changes related to .eh_frame_hdr stuff
 > > in crtstuff, I expect you to be able to give some comments on c++/9265
 > > or at least can name a person that should have an idea what the
 > > problem could be.
 
 Cannot reproduce this, works just fine with
 gcc version 3.2.1 20021207 (Red Hat Linux 8.0 3.2.1-2)
 GNU ld version 2.13.90.0.16 20021126
 
 You obviously cannot mix crt* files between different gcc builds,
 particularly you should never use crt* files from gcc build
 which has
 #define HAVE_LD_EH_FRAME_HDR 1
 in auto-host.h
 in gcc which does not have it.
 gcc which has the above defined during configure will have:
 %{!static:--eh-frame-hdr}
 in specs and thus ensure PT_GNU_EH_FRAME is created:
 readelf -l a.out
 
 Elf file type is EXEC (Executable file)
 Entry point 0x80484ac
 There are 7 program headers, starting at offset 52
 
 Program Headers:
   Type           Offset   VirtAddr   PhysAddr   FileSiz MemSiz  Flg Align
   PHDR           0x000034 0x08048034 0x08048034 0x000e0 0x000e0 R E 0x4
   INTERP         0x000114 0x08048114 0x08048114 0x00013 0x00013 R   0x1
       [Requesting program interpreter: /lib/ld-linux.so.2]
   LOAD           0x000000 0x08048000 0x08048000 0x00734 0x00734 R E 0x1000
   LOAD           0x000734 0x08049734 0x08049734 0x00130 0x00138 RW  0x1000
   DYNAMIC        0x000744 0x08049744 0x08049744 0x000e0 0x000e0 RW  0x4
   NOTE           0x000128 0x08048128 0x08048128 0x00020 0x00020 R   0x4
   GNU_EH_FRAME   0x000678 0x08048678 0x08048678 0x0001c 0x0001c R   0x4
 
 	Jakub

From: Robert Schiele <rschiele@uni-mannheim.de>
To: Jakub Jelinek <jakub@redhat.com>
Cc: cc@pi3.informatik.uni-mannheim.de, gcc-bugs@gcc.gnu.org,
   gcc-gnats@gcc.gnu.org
Subject: Re: c++/9265: exception handling faulty wenn linking PIC objects to non PIC ones
Date: Tue, 4 Feb 2003 20:43:55 +0100

 --W/nzBZO5zC0uMSeA
 Content-Type: text/plain; charset=us-ascii
 Content-Disposition: inline
 Content-Transfer-Encoding: quoted-printable
 
 On Tue, Jan 14, 2003 at 11:37:22PM +0100, Robert Schiele wrote:
 > Hello Jakub.
 
 Hello, did you miss my last message?  Could you give a comment on the
 issue, or at least state that you can't/won't for any reason?
 
 > As you did some of the recent changes related to .eh_frame_hdr stuff
 > in crtstuff, I expect you to be able to give some comments on c++/9265
 > or at least can name a person that should have an idea what the
 > problem could be.
 
 Robert
 
 --=20
 Robert Schiele			Tel.: +49-621-181-2517
 Dipl.-Wirtsch.informatiker	mailto:rschiele@uni-mannheim.de
 
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State-Changed-From-To: feedback->closed
State-Changed-Why: Submitter states that the problem is apparently SuSE
    specific and that he will discuss the matter with them.

From: Robert Schiele <rschiele@uni-mannheim.de>
To: Jakub Jelinek <jakub@redhat.com>
Cc: cc@pi3.informatik.uni-mannheim.de, gcc-bugs@gcc.gnu.org,
   gcc-gnats@gcc.gnu.org, Andreas Jaeger <aj@suse.de>
Subject: Re: c++/9265: exception handling faulty wenn linking PIC objects to non PIC ones
Date: Tue, 4 Feb 2003 23:28:27 +0100

 --3V7upXqbjpZ4EhLz
 Content-Type: text/plain; charset=us-ascii
 Content-Disposition: inline
 Content-Transfer-Encoding: quoted-printable
 
 On Tue, Feb 04, 2003 at 03:19:06PM -0500, Jakub Jelinek wrote:
 > Cannot reproduce this, works just fine with
 > gcc version 3.2.1 20021207 (Red Hat Linux 8.0 3.2.1-2)
 > GNU ld version 2.13.90.0.16 20021126
 
 Thanks for checking this.
 
 > You obviously cannot mix crt* files between different gcc builds,
 
 This is perfectly clear to me. I did this only to track the problem
 down.
 
 Now, after I had the first report from someone with recent binutils
 where it was not reproducable, I did some further research and found
 that it seems to be a SuSE specific problem either with the shipped
 glibc or with some vendor patches on binutils.
 
 I compared SuSE 8.1 to Mandrake 9.0 that have both gcc-3.2,
 binutils-2.12.90.0.15 and glibc-2.2.5.  SuSE has the bug, Mandrake
 not.  So the problem seems to have been introduced by a SuSE specific
 change to either binutils or glibc.
 
 Andreas: This is the reason, why I have put you in CC again.
 
 So, from my point of view, we can close this bug here and I will do
 further discussions about this issue in the SuSE bugzilla.
 
 Robert
 
 --=20
 Robert Schiele			Tel.: +49-621-181-2517
 Dipl.-Wirtsch.informatiker	mailto:rschiele@uni-mannheim.de
 
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From: Robert Schiele <rschiele@uni-mannheim.de>
To: Jakub Jelinek <jakub@redhat.com>
Cc: cc@pi3.informatik.uni-mannheim.de, gcc-bugs@gcc.gnu.org,
   gcc-gnats@gcc.gnu.org, Andreas Jaeger <aj@suse.de>,
   Andreas Schwab <schwab@suse.de>
Subject: Re: c++/9265: exception handling faulty wenn linking PIC objects to non PIC ones
Date: Thu, 6 Feb 2003 10:44:10 +0100

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 On Tue, Feb 04, 2003 at 11:28:27PM +0100, Robert Schiele wrote:
 > Now, after I had the first report from someone with recent binutils
 > where it was not reproducable, I did some further research and found
 > that it seems to be a SuSE specific problem either with the shipped
 > glibc or with some vendor patches on binutils.
 
 Ok, it is definitively not a gcc bug, but a binutils bug, but not
 invented by SuSE specific patches, but by the fact that they configure
 with --enable-targets=3Dx86_64-suse-linux.  This seems to break either
 ld or libbfd, even on plain binutils 2.12.90.0.15.  I haven't yet
 tried later releases, but will do so.
 
 If you are interrested in having more information, feel free to
 contact me.
 
 Robert
 
 --=20
 Robert Schiele			Tel.: +49-621-181-2517
 Dipl.-Wirtsch.informatiker	mailto:rschiele@uni-mannheim.de
 
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