https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83522
Bug ID: 83522
Summary: gfortran is sometimes confused between what is an
element range and what is a character range
Product: gcc
Version: 6.4.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: urbanjost at comcast dot net
Target Milestone: ---
In the attachment:
If I try to print any range of elements of the array other than all of them
and do not specify the extent of the character range I get errors. It is
somewhat like it is confused as to whether I am specifying the range of
elements or the range of characters.
Lines commented with double-exclamations cause different kinds of errors,
usually ICE; sometimes print the wrong strings or get segmentation faults
depending on the LEN value.
So if you take the attachment as-is it will run with some lines a lot like
the commented lines. Try to uncomment the commented lines and you get ICE
when you compile, or various run-time errors; either the wrong output or
run-time segfaults. There is a pattern as to what works and what does not,
but could not quite figure it out so I left all the cases that failed in
the example because I did not want to over-simplify what I was seeing, but ...
I think it is all the same problem, but I cannot even compile this program:
program testit
character(len=:),allocatable :: strings(:)
strings=[character(len=2) :: 'AA','BB']
write(*,*)strings(:)(:) ! <<<< COMPILES WITHOUT THE WRITE(3f)
end program testit
internal compiler error: Segmentation fault
gfortran: internal compiler error: Segmentation fault (program f951)
Please submit a full bug report,
with preprocessed source if appropriate.
