[Bug fortran/112371] Wrong upper bound for the result of reduction intrinsics if the array is empty

[mikael at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112371

--- Comment #3 from Mikael Morin <mikael at gcc dot gnu.org> ---
Possible culprit:
ifunction.m4 has this code:

      retarray->base_addr = xmallocarray (alloc_size, sizeof (rtype_name));
      if (alloc_size == 0)
        {
          /* Make sure we have a zero-sized array.  */
          GFC_DIMENSION_SET(retarray->dim[0], 0, -1, 1);
          return;

        }