https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83584
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Actually there is a common extension mentioned in N1570 about this case.
J.5.7 [Function pointer casts]
1 A pointer to an object or to void may be cast to a pointer to a function,
allowing data to
be invoked as a function (6.5.4).
2 A pointer to a function may be cast to a pointer to an object or to void,
allowing a
function to be inspected or modified (for example, by a debugger) (6.5.4).
----- CUT ----
This is not about undefined behavior being commonly defined either.
