[Bug c++/68738] call to overridden function segfaults

[rianquinn at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68738

Rian Quinn <rianquinn at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |INVALID

--- Comment #5 from Rian Quinn <rianquinn at gmail dot com> ---
It appears to be resolved by simply executing the symbols located in .ctors /
.dtors. Although these sections are documented as being dedicated for globally
defined constructors / destructors, on x86_64, they actually point to a set of
functions labeled:

_GLOBAL__sub_I_XXX
_GLOBAL__sub_D_XXX

which appear to call:

_Z41__static_initialization_and_destruction_0ii

Once this symbol is executed, not only are the globally defined constructors /
destructors executed, but the crashes that were identified in this bug report
are also addressed. This includes crashes for pointers to globally defined
classes, but also pointers to member variables.