[patch,libgfortran] Bug 61632 - memory corruption when writing formatted data

[Janne Blomqvist]

On Mon, Jul 14, 2014 at 12:39 AM, Jerry DeLisle <jvdelisle@charter.net> wrote:
> Hi all,
>
> This bug was caused by an access to an invalid pointer offset to the format
> string. This was only a problem on the second error using the same format
> string.  I suspect it has to do with caching the format strings.  Regardless,
> the patch fixes this by using the fortran style string lengths to calculate the
> position in the string where the error occurs.
>
> Test case attached.
>
> Regression tested on x86-64.
>
> OK for trunk?

Ok, thanks.

>
> 2014-07-12  Jerry DeLisle  <jvdelisle@gcc.gnu.org>
>
>         PR libgfortran/61632
>         * io/format.c (format_error): Avoid invalid string pointer by
>         using the fortran string length values to generate error string.



-- 
Janne Blomqvist