[Bug fortran/57663] Arithmetic error with -fPIC -O

[bardeau at iram dot fr]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57663

--- Comment #6 from Sebastien Bardeau <bardeau at iram dot fr> ---
(In reply to Dominique d'Humieres from comment #5)
> > Well, I am "only" a Fortran programmer, I have no idea of how 
> > the GNU compilers are written...
> 
> Obviously you know how to build gfortran, so can either try to revert
> r167779 or apply r171236. However in my opinion you'll do a better use of
> your time by building either 4.8.1 or trunk (4.9.0).

Well, I do use the latest(s) gfortran for my own use.

Maybe I should have added the context: I am involved in a scientific software
which is compiled by our users from sources. The problem is that they face a
large variety of compilers and versions, including e.g. gfortran 4.6 on Ubuntu
12 LTS. Since this bug makes our software produce wrong results, I have no
better choice than detect and discard affected gfortran versions at compilation
time. This is why I am searching for the exact range of versions affected.