Unused variables in Fortran programs

[Gordon Sande]

Erik Schnetter wrote:
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> Is there a way to make gfortran not warn about certain unused variables 
> when -Wunused is used?  I am looking for the equivalent of 
> __attribute__((unused)) for some automatically generated parts of 
> Fortran code.
> 
> Do you know how other Fortran compilers do this?  Do they maybe offer 
> some special comments, as in
> 
>  integer i
>  ! unused i


You could always try

   common / otherwise_unused_vars / i
   integer i

depending on how effective the checking is. A useful variant would be
that if NO variable in the common is used then the common should get
the citation for being unused. That would make this trick useless as
it is just exploiting a flaw in the usage analysis.


> - -erik
> 
> - -- 
> Erik Schnetter <schnetter@aei.mpg.de>   http://www.aei.mpg.de/~eschnett/
> 
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