Hello world,

the attached patch fixes a few corner cases of a corner case in
simplification, i.e. empty arrays where array intrinsics can actually
have a non-empty array result.

Regression-tested. OK for trunk?

Regards

	Thomas

2017-06-11  Thomas Koenig  <tkoenig@gcc.gnu.org>

         PR fortran/66128
         * simplify.c (simplify_transformation): Return default result for
         empty array argument.
         (gfc_simplify_all): Remove special-case handling for zerosize.
         (gfc_simplify_any): Likewise.
         (gfc_simplify_count): Likewise.
         (gfc_simplify_iall): Likewise.
         (gfc_simplify_iany): Likewise.
         (gfc_simplify_iparity): Likewise.
         (gfc_simplify_minval): Likewise.
         (gfc_simplify_maxval): Likewise.
         (gfc_simplify_norm2): Likewise.
         (gfc_simplify_product): Likewise.
         (gfc_simplify_sum): Likewise.

2017-06-11  Thomas Koenig  <tkoenig@gcc.gnu.org>

         PR fortran/66128
         * gfortran.dg/zero_sized_9.f90: New test.