Bug#386121: libstdc++6: Incompatibility with older libgcc_s.so.1

[Stefan Bellon <sbellon@sbellon.de>]

Package: libstdc++6
Version: 4.1.1-13
Severity: important


I have problems with version 4.1.1ds1-13 of package libstdc++6 as this
breaks some older applications. If you have the sources, you can
recompile, if not ... what is the suggested solution?

What happens is this:

sbellon@io$ ldd foobar
./foobar: /usr/local/gnat/lib/libgcc_s.so.1: version `GCC_4.2.0' not
found (required by /usr/lib/libstdc++.so.6)

This looks to me like the new library demands version GCC_4.2.0 from
libgcc_s.so.1, which in my case cannot provide this. How can I get
foobar going with the new libstdc++? I can recompile foobar as I have
the sources to it, but I cannot easily
recompile /usr/local/gnat/lib/libgcc_s.so.1 which foobar depends on
(this is from AdaCore's binary distribution of GNAT).

With the 4.1.1ds1-13, it looks like this:

sbellon@io$ strings /usr/lib/libstdc++.so.6 | grep ^GCC
GCC_3.3
GCC_4.2.0
GCC_3.0
sbellon@io$ 

With 4.1.1-11 everything was fine:

bellonsn@cube$ strings /usr/lib/libstdc++.so.6 | grep ^GCC
GCC_3.3
GCC_3.0
bellonsn@cube$

Why was this dependency introduced? Is there any way around it?

In the libgcc_s.so.1 supplied by AdaCore, it looks like this:

bellonsn@cube$ strings /usr/local/gnat/lib/libgcc_s.so.1 | grep ^GCC
GCC_3.0
GCC_3.3
GCC_3.3.1
GCC_3.4
GCC_3.4.2

Is this a change in libstdc++6 that will become necessary in the future
anyway and there's no way round it, or is it a bug in the latest version
of the libstdc++6 package?

Thanks for any hints in advance.


-- System Information:
Debian Release: testing/unstable
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: i386 (i686)
Shell:  /bin/sh linked to /bin/bash
Kernel: Linux 2.6.17
Locale: LANG=en_US, LC_CTYPE=de_DE (charmap=ANSI_X3.4-1968) (ignored: LC_ALL set to C)

Versions of packages libstdc++6 depends on:
ii  gcc-4.1-base                 4.1.1-13    The GNU Compiler Collection (base 
ii  libc6                        2.3.6.ds1-4 GNU C Library: Shared libraries
ii  libgcc1                      1:4.1.1-13  GCC support library

libstdc++6 recommends no packages.

-- no debconf information