libstdc++/6442: Regression wrt 3.0.x: undefined reference to `std::__basic_file<char>::is_open()'

libstdc++/6442: Regression wrt 3.0.x: undefined reference to `std::__basic_file<char>::is_open()'

[bagnara]

>Number:         6442
>Category:       libstdc++
>Synopsis:       Regression wrt 3.0.x: undefined reference to `std::__basic_file<char>::is_open()'
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Apr 24 13:36:01 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     bagnara@cs.unipr.it
>Release:        gcc version 3.1 20020424 (prerelease)
>Organization:
>Environment:
$ uname -a
Linux zoltan.unisuv.it 2.4.17 #18 Sat Dec 22 16:57:24 CET 2001 i686 unknown
$ /opt/bin/g++ -v
Reading specs from /opt/lib/gcc-lib/i686-pc-linux-gnu/3.1/specs
Configured with: ../gcc/configure --prefix=/opt : (reconfigured) ../gcc/configure --prefix=/opt
Thread model: single
gcc version 3.1 20020424 (prerelease)
>Description:
For some reason the implementation of `std::__basic_file<char>::is_open()'
seems to be unavailable both at compile-time and at link-time.
This problem is not present in GCC 3.0.x.
>How-To-Repeat:
$ /opt/bin/g++ bug.cc
/opt/lib/gcc-lib/i686-pc-linux-gnu/3.1/../../../libstdc++.so: undefined reference to `std::__basic_file<char>::is_open()'
collect2: ld returned 1 exit status
>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted:
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Re: libstdc++/6442: Regression wrt 3.0.x: undefined reference to `std::__basic_file<char>::is_open()'

[paolo]

Synopsis: Regression wrt 3.0.x: undefined reference to `std::__basic_file<char>::is_open()'

State-Changed-From-To: analyzed->closed
State-Changed-By: paolo
State-Changed-When: Thu Apr 25 08:02:37 2002
State-Changed-Why:
    Closed upon submitter request.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=6442

Re: libstdc++/6442: Regression wrt 3.0.x: undefined reference to `std::__basic_file<char>::is_open()'

[Roberto Bagnara]

The following reply was made to PR libstdc++/6442; it has been noted by GNATS.

From: Roberto Bagnara <bagnara@cs.unipr.it>
To: bagnara@cs.unipr.it, gcc-gnats@gcc.gnu.org, gcc-prs@gcc.gnu.org,
   gcc-bugs@gcc.gnu.org
Cc:  
Subject: Re: libstdc++/6442: Regression wrt 3.0.x: undefined reference to
 `std::__basic_file<char>::is_open()'
Date: Thu, 25 Apr 2002 15:37:52 +0200

 http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=6442
 
 After another cvs update the problem has disappeared.
 Now the non const version of
 
      std::__basic_file<char>::is_open() const
 
 is no longer referenced (but it was yesterday!)
 You may close the bug report.
 All the best
 
      Roberto
 
 --
 Prof. Roberto Bagnara
 Computer Science Group
 Department of Mathematics, University of Parma, Italy
 http://www.cs.unipr.it/~bagnara/
 mailto:bagnara@cs.unipr.it
 

Re: libstdc++/6442: Regression wrt 3.0.x: undefined reference to `std::__basic_file<char>::is_open()'

[Roberto Bagnara]

The following reply was made to PR libstdc++/6442; it has been noted by GNATS.

From: Roberto Bagnara <bagnara@cs.unipr.it>
To: bagnara@cs.unipr.it, gcc-gnats@gcc.gnu.org, gcc-prs@gcc.gnu.org,
   gcc-bugs@gcc.gnu.org
Cc:  
Subject: Re: libstdc++/6442: Regression wrt 3.0.x: undefined reference to
 `std::__basic_file<char>::is_open()'
Date: Thu, 25 Apr 2002 13:53:39 +0200

 http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=6442
 
 I did a `make check' and this results in almost everything failing because
 of the usual link problem:
 
 /opt/objdir/i686-pc-linux-gnu/libstdc++-v3/src/.libs/libstdc++.so: undefined reference to `std::__basic_file<char>::is_open()'
 collect2: ld returned 1 exit status
 compiler exited with status 1
 
 The summary is
 
 		=== libstdc++-v3 Summary ===
 
 # of expected passes		23
 # of unexpected failures	189
 
 I enclose the complete log file below.
 I am now running CVS update on the sources; I will then
 `make bootstrap' from scratch.
 
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 #);4P
 `
 end
 

Re: libstdc++/6442: Regression wrt 3.0.x: undefined reference to `std::__basic_file<char>::is_open()'

[Paolo Carlini]

The following reply was made to PR libstdc++/6442; it has been noted by GNATS.

From: Paolo Carlini <pcarlini@unitus.it>
To: bagnara@cs.unipr.it,  gcc-gnats@gcc.gnu.org,  gcc-prs@gcc.gnu.org, 
 gcc-bugs@gcc.gnu.org
Cc:  
Subject: Re: libstdc++/6442: Regression wrt 3.0.x: undefined reference to
 `std::__basic_file<char>::is_open()'
Date: Thu, 25 Apr 2002 13:09:44 +0200

 Hi Roberto,
 
 honestly, I'm not sure to really understand the problem you reported, 
 neither I'm able to reproduce it with your testcase or any other 
 involving streams (both statically and dynamically linked).
 
 Anyway, testsuite/27_io exercises quite a bit is_open. Could you 
 possibly run a "make check" and report about it?
 
 Thanks,
 Paolo.
 
 http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=6442 
 
 

Re: libstdc++/6442: Regression wrt 3.0.x: undefined reference to `std::__basic_file<char>::is_open()'

[Roberto Bagnara]

The following reply was made to PR libstdc++/6442; it has been noted by GNATS.

From: Roberto Bagnara <bagnara@cs.unipr.it>
To: bagnara@cs.unipr.it, gcc-gnats@gcc.gnu.org, gcc-prs@gcc.gnu.org,
   gcc-bugs@gcc.gnu.org
Cc:  
Subject: Re: libstdc++/6442: Regression wrt 3.0.x: undefined reference to
 `std::__basic_file<char>::is_open()'
Date: Thu, 25 Apr 2002 08:05:41 +0200

 http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=6442
 
 Indeed the problem seems largely independent from the testcase.
 However, it is there.  Here is another attempt at reconstructing
 the problem.
 
 1) I "cvs update"d the 3.1 branch less than 12 hours ago;
 2) I ran configure in a separate directory with "--prefix=/opt" as the only option;
 3) I ran "make bootstrap" and this terminated OK;
 4) I ran "make install";
 5) I now have, among others, the following files in /opt/lib
 
 $ ls -l /opt/lib/libstdc++.so /opt/lib/libstdc++.so.4.0.0 /opt/lib/libstdc++.a
 -rw-r--r--    1 roberto  roberto   8170982 Apr 24 22:42 /opt/lib/libstdc++.a
 lrwxrwxrwx    1 roberto  roberto        18 Apr 24 22:42 /opt/lib/libstdc++.so -> libstdc++.so.4.0.0
 -rwxr-xr-x    1 roberto  roberto   3680871 Apr 24 22:42 /opt/lib/libstdc++.so.4.0.0
 
 6) these seem to have an unresolved symbol;
 
 $ nm --demangle /opt/lib/libstdc++.a | fgrep "__basic_file<char>::is_open()"
 00000000 T std::__basic_file<char>::is_open() const
           U std::__basic_file<char>::is_open()
 $ nm --demangle /opt/lib/libstdc++.so | fgrep "__basic_file<char>::is_open()"
 0003e370 T std::__basic_file<char>::is_open() const
           U std::__basic_file<char>::is_open()
 
 Perhaps a `const' qualifier is missing, perhaps in
 gcc/libstdc++-v3/config/io/basic_file_libio.h or maybe somewhere else.
 
 Please let me know if I can do more to help you find the cause of the problem.
 All the best
 
       Roberto
 
 --
 Prof. Roberto Bagnara
 Computer Science Group
 Department of Mathematics, University of Parma, Italy
 http://www.cs.unipr.it/~bagnara/
 mailto:bagnara@cs.unipr.it
 

Re: libstdc++/6442: Regression wrt 3.0.x: undefined reference to `std::__basic_file<char>::is_open()'

[paolo]

Synopsis: Regression wrt 3.0.x: undefined reference to `std::__basic_file<char>::is_open()'

State-Changed-From-To: open->analyzed
State-Changed-By: paolo
State-Changed-When: Wed Apr 24 14:18:04 2002
State-Changed-Why:
    I cannot reproduce this with 3.1 20020424 on x86-linux:
    paolo:~> g++ -v
    Reading specs from /usr/local/gcc-test/lib/gcc-lib/i686-pc-linux-gnu/3.1/specs
    Configured with: ../gcc-3_1-branch/gcc/configure --prefix=/usr/local/gcc-test
    Thread model: single
    gcc version 3.1 20020424 (prerelease)
    paolo:~> cat bug.cc
    #include <iostream>
    #include <sstream>
    
    using namespace std;
    
    int main() {
      string s;
      ostringstream d(s);
      d << "hello" << endl;
      cout << d.str();
    }
    paolo:~> g++ bug.cc
    paolo:~>

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