[Bug fortran/54301] Add optional warning if pointer assigning a local variable to a nonlocal pointer

[tkoenig at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54301

Thomas Koenig <tkoenig at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2012-08-19
     Ever Confirmed|0                           |1

--- Comment #4 from Thomas Koenig <tkoenig at gcc dot gnu.org> 2012-08-19 17:10:28 UTC ---
(In reply to comment #3)

> Given the potential badness, I still think one should warn for (a) to (d).
> Though, one probably should think of not warning if the target has the SAVE
> attribute.

If the target has the SAVE attribute or is allocatable, we shouldn't warn.

> The other question is whether the warning should be enabled by -Wall or not. (I
> would enable it with -Wall.)

At least. Because the behavior is very likely to lead to difficult to
detect bugs, I would even consider warning by default.