[Bug fortran/56650] Odd error messages with C_SIZEOF for valid code

[burnus at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56650

Tobias Burnus <burnus at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |rejects-valid
                 CC|                            |burnus at gcc dot gnu.org
            Summary|Odd error messages with     |Odd error messages with
                   |C_SIZEOF                    |C_SIZEOF for valid code

--- Comment #1 from Tobias Burnus <burnus at gcc dot gnu.org> 2013-03-18 09:22:34 UTC ---
Note that the code is VALID. "c_sizeof" is a specification inquiry:

"A specification inquiry is a reference to [...] (4) the function C_SIZEOF from
the intrinsic module ISO C BINDING (15.2.3.7), or [...]"

(F2008, "7.1.11 Specification expression")


And those are allowed in constant expressions:

"(4) a specification inquiry where each designator or function argument is
     (a) a constant expression or
     (b) a variable whose properties inquired about are not
         (i) assumed,
         (ii) deferred, or
         (iii) defined by an expression that is not a constant expression,"

(F2008, "7.1.12 Constant expression")