[Bug testsuite/28032] gfortran.dg tests use dg-options with -On even though it is already torture tests

[redi at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=28032

--- Comment #12 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I think you should also do:

 set DO_ONE_PASS 0

After checking it, so that it doesn't remain set between tests.