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Re: erroneous warning about line truncation
On Mon, Nov 02, 2009 at 09:47:03AM -0800, Hans Horn wrote:
> Steve Kargl wrote:
> >On Mon, Nov 02, 2009 at 09:03:10AM -0800, Hans Horn wrote:
> >>Folks,
> >>
> >>I get warnings about line truncation on fixed-form (f77) code when I
> >>have inline comments starting at column 73 and beyond.
> >>
> >
> >Fixed-form code is restricted to 72 columns. From the Fortran
> >2003 Standard.
> >
> >3.3.2 Fixed source form
> >
> >In fixed source form, there are restrictions on where a statement mayr
> >appear within a line. If a source line contains only default kind
> >characters, it shall contain exactly 72 characters; otherwise, its
> >maximum number of characters is processor dependent.
> >
> >See the gfortran manual for options that allows you to violate this
> >restricton.
> >
>
> Steve,
>
> line 5 in the mock code I posted emits a warning, while line 4 doesn't.
> Both lines are more than 72 chars in length.
>
> subroutine foo
> IMPLICIT NONE
> Integer stupid_dummy_variable1 ! stupid_dummy_variable1
> Integer stupid_dummy_variable2
> ! stupid_dummy_variable2
> Integer stupid_dummy_variable3
> ! stupid_dummy_variable3
Actually, after I unwrap the two comments (email programs have a funny
habit of wrapping long lines). Neither gives a warning. Of course,
I simply unwrapped the lines. You've obviously done something more
with the above example; perhaps, starting the two comments in
column 73. Let's see.
troutmask:sgk[208] nedit fh.f (unfix to column 73)
troutmask:sgk[207] gfc4x -c -Wall fh.f
fh.f:4.72:
Integer stupid_dummy_variable2
1
Warning: Line truncated at (1)
fh.f:5.72:
Integer stupid_dummy_variable3
1
Warning: Line truncated at (1)
Yep, the lines of turncated. RTFM.
troutmask:sgk[216] gfc4x -c -Wall -ffixed-line-length-none fh.f
To re-iterate, fixed-form is restricted to 72 columns. Period.
--
Steve