[Bug fortran/68968] Internal Compiler error

[kargl at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68968

--- Comment #3 from kargl at gcc dot gnu.org ---
(In reply to kargl from comment #2)
> (In reply to kargl from comment #1)
> > (In reply to Fred Krogh from comment #0)
> > > Created attachment 37073 [details]
> > > Compile this as indicated in the comments and get a segmentation fault in
> > > the compiler
> > > 
> > > test.F90 attached gives an internal compiler error (Segmentation fault) when
> > > compiled with
> > > 
> > > gfortran -Dplet_=\'q\' -o test test.F90
> > > 
> > > If gfortran is replaced by cpp in the above, it seems to generate what one
> > > would expect.
> > 
> > A workaround is to remove the apostrophes around 's', 'd', and 'q'.
> 
> Forgot to add
> 
> % gfc6 -E -Dplet_=s ~/tmp/wq.F90 | cat -s
> # 1 "/mnt/sgk/tmp/wq.F90"
> # 1 "<built-in>"
> # 1 "<command-line>"
> # 1 "/mnt/sgk/tmp/wq.F90"
> program test
> 
>   print '(A)', "C_FLOAT"
>   stop
> end program test

Crudge I should know better than to try to help
with gfortran's cpp feature.  Forget I mentioned
the above.