[Bug fortran/100094] Undefined pointers have incorrect rank when using optimization

[jrfsousa at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100094

--- Comment #3 from José Rui Faustino de Sousa <jrfsousa at gmail dot com> ---
(In reply to kargl from comment #1)
> Isn't the code invalid Fortran because it references an undefined pointer?
> If yes, the compiler is allows to do whatever it wants with the code.

AFAIK that is correct off all the "associate-like" constructs, the only
exception is select rank.

11.1.10.3 Attributes of a SELECT RANK associate name, paragraph 3:

"The associating entity has the ALLOCATABLE, POINTER, or TARGET attribute if
the selector has that attribute. The other attributes of the associating entity
are described in 11.1.3.3."

Best regards,
José Rui