[Bug c++/11355] New: compilation involving static class members is affected by the presence of virtual destructor

[mohit_aron at hotmail dot com]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11355

           Summary: compilation involving static class members is affected
                    by the presence of virtual destructor
           Product: gcc
           Version: 2.95.3
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: mohit_aron at hotmail dot com
                CC: gcc-bugs at gcc dot gnu dot org

Consider a class Foo defined in header file foo.h, with a static method in Foo
called Bar. Lets say foo.cc includes the header file foo.h and uses Foo::Bar().
Here are the following cases:

1) Class Foo has no virtual destructor. In this case the following commands:
        g++ -c -fno-inline  foo.cc
        nm -n foo.o | grep Bar
     shows Bar to be defined as a weak symbol.

2) Class Foo has a virtual destructor declared (but not defined) AND the
definition is not present in foo.cc
        g++ -c -fno-inline  foo.cc
        nm -n foo.o | grep Bar
     shows Bar to be defined as an undefined symbol   (this is the bug)

3) Class Foo has a virtual destructor declared AND the definition of the
destructor is present in foo.cc:
        g++ -c -fno-inline  foo.cc
        nm -n foo.o | grep Bar
     shows Bar to be defined as a weak symbol.



The bug is demonstrated by case (2) above.