https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94228
--- Comment #5 from Steve Kargl <sgk at troutmask dot apl.washington.edu> --- On Thu, Mar 19, 2020 at 10:24:10PM +0000, markwayne1969 at gmail dot com wrote: > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94228 > > --- Comment #4 from Mark Paris <markwayne1969 at gmail dot com> --- > (In reply to kargl from comment #3) > > No. Newer C, as opposed to older C, uses // for a comment. > > Fortran uses // as the concatenation operator. Run this > > through a cpp pre-processor. > > > > character(len=80) :: name = 'john ' // 'Doe' > > print *, name > > end > > > > ~/work/bin/cpp a.F > > # 1 "a.F" > > # 1 "<built-in>" > > # 1 "<command-line>" > > # 1 "a.F" > > character(len=80) :: name = 'john ' > > print *, name > > end > > Thank you for your kind reply. I understand that this is an issue of disparate use of the same operator, '//' in C and Fortran. > > Is it possible to have cpp recognize the different uses of // by, > say, the file name extension of the source being processed? Sure. Anything is possible if someone puts in the time to write a Fortran specific preprocessor. AFAIK, none of the current diminishing number of gfortran contributors is working a new preprocessor. > Links to information about gcc development for this specific > possible feature would be appreciated. I don't know of any gfortran preprocessor projects. You are more then welcomed to clone the git repository and start such a project. Having new gfortran contributors would be healthy for gfortran's future.
