| ! This demonstrates an inconsistency in the handling of modules with renaming. |
| ! J. Overbey 8 Apr 2010 |
| |
| module m1; implicit none |
| integer :: m |
| end module |
| |
| module m2; use m1; implicit none |
| integer :: n |
| end module |
| |
| program test |
| ! There is ambiguity in the Fortran 95 standard as to how the following |
| ! statement should be handled. According to Section 11.3.2: |
| ! "Two or more accessible entities, other than |
| ! generic interfaces, may have the same name only if |
| ! the name is not used to refer to an entity in the |
| ! scoping unit." |
| ! The question is what "refer to" means. If you |
| ! interpret this to mean, "The name has no references," |
| ! then compilation should succeed. If you interpret it to mean, |
| ! "There are no other declarations/entities with that |
| ! name," then compilation should fail. |
| ! GNU Fortran 4.4.2: Compilation succeeds. |
| ! IBM XL Fortran 12.1: Compilation fails: "Identifier "x" to be used as the |
| ! the local name in a rename, has already been used |
| ! to access another entity by use-association. This |
| ! rename will not be done." |
| ! Intel Fortran 10.1: Compilation fails: "There is more than one use-name |
| ! for a local-name. [X]" |
| ! PGI Fortran 10.0: Compilation succeeds. |
| use m2, x => n, x => m |
| implicit none |
| print *, "Hi" |
| end program |
