http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54082
--- Comment #2 from Tobias Burnus <burnus at gcc dot gnu.org> 2012-07-24 15:53:20 UTC --- (In reply to comment #1) > (In reply to comment #0) > > program abs > > print *, abs(-1) > > end program > Back to your example, and quoting from the Fortran standard (cf. > http://gcc.gnu.org/wiki/GFortranStandards; F2008, Section 16.2): > > "Program units, common blocks, external procedures, entities with binding > labels, external input/output units, pending data transfer operations, and > images are global entities of a program. [...]" > > "The global identifier of an entity shall not be the same as the global > identifier of any other entity." > > Here, "program abs" is a "program unit" and the function "abs" of "abs(-1)" is > an "external procedure". Actually, if you meant the intrinsic "abs" function, that the "abs" in "abs(-1)" is not an "external procedure" and, thus, that "abs" is not a global name. But a local identifier "Identifiers of entities in the classes (1) [...] intrinsic procedures, [...] are local identifiers." Nonetheless, it is invalid as: > As used in my example, the "abs" subroutine is a local > identifier, which per 16.3.1 "shall not be the same as a global identifier > used in that scope unless [...]" - thus, I used a different name, i.e "test".)
