[Bug c++/15175] New: can't find linker symbol for virtual table

["tromey at redhat dot com" <sourceware-bugzilla@sourceware.org>]

http://sourceware.org/bugzilla/show_bug.cgi?id=15175

             Bug #: 15175
           Summary: can't find linker symbol for virtual table
           Product: gdb
           Version: unknown
            Status: NEW
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned@sourceware.org
        ReportedBy: tromey@redhat.com
    Classification: Unclassified


I sometimes see the error "can't find linker symbol for virtual table".
For example, with this program on F16:

#include <typeinfo>
#include <stdio.h>

int main(int a, char *v[])
{
  const std::type_info *info = &typeid(main);

  printf ("%s\n", info->name());
}


(gdb) start
Temporary breakpoint 1 at 0x4005b3: file q.cc, line 6.
Starting program: /tmp/q 

Temporary breakpoint 1, main (a=1, v=0x7fffffffe568) at q.cc:6
6      const std::type_info *info = &typeid(main);
(gdb) n
8      printf ("%s\n", info->name());
(gdb) p info
$1 = (warning: can't find linker symbol for virtual table for `std::type_info'
value
warning: can't find linker symbol for virtual table for `std::type_info' value
const std::type_info *) 0x400720

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