[Bug middle-end/68279] ICE: in create_pw_aff_from_tree, at graphite-sese-to-poly.c:836

[spop at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68279

--- Comment #5 from Sebastian Pop <spop at gcc dot gnu.org> ---
After fixing the graphite fail, I get these warnings from the testcase in
comment4:

FAIL: gfortran.dg/graphite/pr68279.f90   -O  (test for excess errors)
Excess errors:
/work/spop/gcc/gcc/testsuite/gfortran.dg/graphite/pr68279.f90:21:19: Warning:
Legacy Extension: REAL array index at (1)
/work/spop/gcc/gcc/testsuite/gfortran.dg/graphite/pr68279.f90:22:25: Warning:
Legacy Extension: REAL array index at (1)
/work/spop/gcc/gcc/testsuite/gfortran.dg/graphite/pr68279.f90:22:41: Warning:
Legacy Extension: REAL array index at (1)
/work/spop/gcc/gcc/testsuite/gfortran.dg/graphite/pr68279.f90:22:29: Warning:
Legacy Extension: REAL array index at (1)
/work/spop/gcc/gcc/testsuite/gfortran.dg/graphite/pr68279.f90:22:75: Warning:
Legacy Extension: REAL array index at (1)
/work/spop/gcc/gcc/testsuite/gfortran.dg/graphite/pr68279.f90:22:86: Warning:
Legacy Extension: REAL array index at (1)
/work/spop/gcc/gcc/testsuite/gfortran.dg/graphite/pr68279.f90:24:27: Warning:
Legacy Extension: REAL array index at (1)
/work/spop/gcc/gcc/testsuite/gfortran.dg/graphite/pr68279.f90:24:36: Warning:
Legacy Extension: REAL array index at (1)
/work/spop/gcc/gcc/testsuite/gfortran.dg/graphite/pr68279.f90:25:16: Warning:
Legacy Extension: REAL array index at (1)
/work/spop/gcc/gcc/testsuite/gfortran.dg/graphite/pr68279.f90:25:34: Warning:
Legacy Extension: REAL array index at (1)

Is there a flag I can set to avoid these warnings?
Thanks!