[Bug libfortran/77828] [7 Regression] Linking gfortran-7 compiled program with libgfortran of 5.x allowed but crashes when containing write to string

[jvdelisle at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77828

Jerry DeLisle <jvdelisle at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2016-10-03
                 CC|                            |jvdelisle at gcc dot gnu.org
           Assignee|unassigned at gcc dot gnu.org      |jvdelisle at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #1 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
(In reply to vehre from comment #0)
> Created attachment 39737 [details]
> Standalone code as given in the description.
> 
> Compiling this example:
> 
> character(len=100) :: gr
> integer :: i, j
> 
> i =42
> j =43
> write (gr,"(2(a,i2))") "Greetings from i ",i," of ", j
> print *,gr
> 

I am pretty sure this is related to the dtio internal units patch. I think I
need to bump the symbol versions for the basic read and write statements, the
changes to internal units was fairly intrusive.

So this one is mine. Thanks for report.