[Bug fortran/53977] New: CPP: Support __func__/__FUNCTION__

[Bug fortran/53977] New: CPP: Support __func__/__FUNCTION__

[burnus at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53977

             Bug #: 53977
           Summary: CPP: Support __func__/__FUNCTION__
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: burnus@gcc.gnu.org


As requested at http://gcc.gnu.org/ml/fortran/2012-07/msg00054.html

It would be useful to provide the name of the current procedure when using -cpp
via __func__/__FUNCTION__.

>From the GCC's CPP manual:

"C99 introduces __func__, and GCC has provided __FUNCTION__ for a long time.
Both of these are strings containing the name of the current function (there
are slight semantic differences; see the GCC manual). Neither of them is a
macro; the preprocessor does not know the name of the current function. They
tend to be useful in conjunction with __FILE__ and __LINE__, though."

http://gcc.gnu.org/onlinedocs/cpp/Standard-Predefined-Macros.html

[Bug fortran/53977] CPP: Support __func__/__FUNCTION__

[burnus at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53977

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |burnus at gcc dot gnu.org

--- Comment #1 from Tobias Burnus <burnus at gcc dot gnu.org> 2012-07-16 07:50:21 UTC ---
See also http://gcc.gnu.org/onlinedocs/gcc/Function-Names.html for how that's
implemented in C.

[Bug fortran/53977] CPP: Support __func__/__FUNCTION__

[burnus at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53977

--- Comment #2 from Tobias Burnus <burnus at gcc dot gnu.org> 2012-07-16 08:14:15 UTC ---
A quick test of other Fortran compilers shows that this is not a widely
supported feature - none of the tried compilers supports it. In C, it falls
semantically into the preprocessor, even though it is implemented as compiler
feature.

In terms of the form, gcc's __FUNCTION__ looks much more like a CPP macro than
C99's __func__.

(As CPP is not a Fortran-tuned preprocessor, the semantic - when applied to
Fortran - is a bit unclear as are features like C99's __func__.)