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

[Roberto Bagnara <bagnara@cs.unipr.it>]

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