[Bug libstdc++/51956] [patch] improve shared_ptr and weak_ptr pretty-printers for gdb

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51956

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|---                         |4.7.0

--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-02-05 19:13:06 UTC ---
I didn't use your patch, as it printed the wrong thing for the weak count
(_M_weak_count is #weak + (#shared != 0) not #weak + #nshared)

now it prints one of:

(count N, M weak)
(expired, M weak) for an expired weak pointer
(empty)           for an empty pointer