From mboxrd@z Thu Jan  1 00:00:00 1970
From: dalle@iar.se
To: gcc-gnats@gcc.gnu.org
Subject: libstdc++/4236: Unresolved symbols problem (sparc solaris differs from hppa hp-ux)
Date: Wed, 05 Sep 2001 04:06:00 -0000
Message-id: <20010905105944.28424.qmail@sourceware.cygnus.com>
X-SW-Source: 2001-09/msg00104.html
List-Id: <gcc-prs.sourceware.org>

>Number:         4236
>Category:       libstdc++
>Synopsis:       Unresolved symbols problem (sparc solaris differs from hppa hp-ux)
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Sep 05 04:06:01 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator:     Jan-Erik Dahlin
>Release:        gcc-3.0.1
>Organization:
>Environment:
hppa hp-ux 10.20
sparc solaris8 
>Description:
#include <strstream>
class inherit_from_ostrstream  : public std::ostrstream { };
main()
{
  inherit_from_ostrstream junk;
}

When the program above compiles fine on both platforms, but
it will only link under solaris. On the hp I get:

blakkur:~/iar/GCC3 >g++ bug.c
collect2: ld terminated with signal 10 [Bus error]
/usr/ccs/bin/ld: Unsatisfied symbols:
   virtual thunk to std::ostrstream::~ostrstream()(data)
   virtual thunk to std::ostrstream::~ostrstream()(data)

And it turns out the thunk in the library is static:

blakkur:~/iar/GCC3 >nm /usr/local/lib/libstdc++.a | grep _ZTv0_n12_NSt10ostrstreamD0Ev
_ZTv0_n12_NSt10ostrstreamD0Ev|         0|static|entry  |$CODE$

But on solaris the symbol has weak linkage:

kveikur:~/iar/GCC3 >nm /usr/local/lib/libstdc++.a | grep _ZTv0_n12_NSt10ostrstreamD0Ev
[254]   |         0|      32|FUNC |WEAK |0    |63     |_ZTv0_n12_NSt10ostrstreamD0Ev
>How-To-Repeat:
Compile included program.
>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted: