Bug#94955: marked as done ([mips] Linking with libstdc++ changes behavior of a program (which does not require libstdc++))
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and subject line bug #94955 reported against g++-2.95
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Received: (at submit) by bugs.debian.org; 23 Apr 2001 06:31:20 +0000
>From phil@fifi.org Mon Apr 23 01:31:20 2001
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To: submit@bugs.debian.org
Subject: Linking with libstdc++ changes behavior of a program (which does not require libstdc++)
From: Philippe Troin <phil@fifi.org>
Date: 22 Apr 2001 23:31:18 -0700
Message-ID: <8766fwt9e1.fsf@ceramic.fifi.org>
Lines: 66
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Package: libstdc++2.10-glibc2.2
Version: 1:2.95.3-8
==== BEGIN TRANSCRIPT ================================================
phil@resume:~% cat foo.cpp
#include <unistd.h>
class EX
{
public:
EX() { write(2,"XCR\n",4); }
virtual ~EX() { write(2, "XD\n", 3); }
EX(const EX&) { write(2, "XCP\n", 4); }
};
class EY : public virtual EX
{
public:
EY() { write(2,"YCR\n",4); }
~EY() { write(2, "YD\n", 3); }
EY(const EY&) { write(2, "YCP\n", 4); }
};
int main()
{
try {
throw EY();
}
catch(const EY&)
{
}
return 0;
}
phil@resume:~% gcc -o foo foo.cpp
phil@resume:~% ./foo
XCR
YCR
XCR
YCP
YD
XD
YD
XD
phil@resume:~% gcc -o foo foo.cpp -lstdc++
phil@resume:~% ./foo
XCR
YCR
XCR
YCP
YD
XD
zsh: 11278 illegal hardware instruction ./foo
phil@resume:~%
==== END TRANSCRIPT ================================================
This program does not require libstdc++... However, if libstdc++ is
linked in, the program crashes...
This problem occurs only on the mips architecture.
Well, actually, a bigger program (aleph package) has the same problem
(works when NOT linked with libstdc++, crashes when linked with
libstdc++) on both mips and arm. I isolated the problem to this simple
test case on mips.
Phil.
---------------------------------------
Received: (at 94955-done) by bugs.debian.org; 15 Oct 2003 00:55:44 +0000
>From rmurray@cyberhqz.com Tue Oct 14 19:55:11 2003
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Date: Tue, 14 Oct 2003 13:38:44 -0700
From: Ryan Murray <rmurray@debian.org>
To: Matthias Klose <doko@cs.tu-berlin.de>
Cc: Philippe Troin <phil@fifi.org>, 94955-done@bugs.debian.org
Subject: Re: bug #94955 reported against g++-2.95
Message-ID: <20031014203844.GG1092@cyberhqz.com>
References: <16268.20687.29495.461937@gargle.gargle.HOWL>
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On Tue, Oct 14, 2003 at 09:38:55PM +0200, Matthias Klose wrote:
> Please could you check, if this is fixed with our current default
> compiler (3.3.2)?
As I wrote in May of last year, this is almost certainly caused by the
horribly incomplete exception handling in 2.95.x on mips, which was fixed in
3.0. There has been no response from Phil since then, and the package that
found the problem is built on mips and mipsel, so I'm closing the bug at th=
is
point.
--=20
Ryan Murray, Debian Developer (rmurray@cyberhqz.com, rmurray@debian.org)
The opinions expressed here are my own.
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