[Bug fortran/37746] string copy fails, due to changed intent(in) parameter

2008-10-07 Thread kloedej at knmi dot nl 


--- Comment #3 from kloedej at knmi dot nl  2008-10-07 11:23 ---
Hi,

thanks for this discussion.
I do agree now that this code was invalid. I was thinking otherwise because no
compiletime or runtime error was issued by any of the compilers that I tried. 
Checking this during compilation should at least be possible when the interface
of the subroutine is known, so when it is defined inside a module, but gfortran
also accepts that case without complaining.

best regards,

Jos de Kloe.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37746

[Bug fortran/37746] string copy fails, due to changed intent(in) parameter

2008-10-06 Thread burnus at gcc dot gnu dot org 


--- Comment #2 from burnus at gcc dot gnu dot org  2008-10-06 19:53 ---
I think the true bug is that -fbounds-check misses the problem. NAG f95 prints
at run time:
  CHARACTER actual arg LEN=50 shorter than dummy arg LEN=51
  Program terminated by fatal error


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37746

[Bug fortran/37746] string copy fails, due to changed intent(in) parameter

2008-10-06 Thread kargl at gcc dot gnu dot org 


--- Comment #1 from kargl at gcc dot gnu dot org  2008-10-06 14:47 ---
Your code works if you fix the bug.  You have two choices

program Test_StrCopy
  character(len=50) :: a
  character(len=51) :: b
  a = "abcdefg"
  call copy(a,b)
end program Test_StrCopy

or

subroutine copy(a,b)
  character(len=*),   intent(in) :: a
  character(len=len(a)), intent(out) :: b


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37746