[Bug analyzer/110483] Several gcc.dg/analyzer/out-of-bounds-diagram-*.c tests FAIL

["dmalcolm at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110483

--- Comment #1 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Thanks for filing this; sorry about the failures.

What's the endianness of the hosts that this is happening on?

Is there a machine in the GCC compile farm that this happens on?

The row of indices is is created here in
string_region_spatial_item::make_table:
    if (m_show_full_string)
      {
       for (byte_offset_t byte_idx = bytes.get_start_byte_offset ();
            byte_idx < bytes.get_next_byte_offset ();
            byte_idx = byte_idx + 1)
         add_column_for_byte (t, btm, sm, byte_idx,
                              byte_idx_table_y, byte_val_table_y);
where class string_region_spatial_item has:
  void add_column_for_byte (table &t, const bit_to_table_map &btm,
                            style_manager &sm,
                            const byte_offset_t byte_idx,
                            const int byte_idx_table_y,
                            const int byte_val_table_y) const
  {
    tree string_cst = get_string_cst ();
    gcc_assert (byte_idx >= 0);
    gcc_assert (byte_idx < TREE_STRING_LENGTH (string_cst));

    const byte_range bytes (byte_idx, 1);
    if (1) // show_byte_indices
      {
        const table::rect_t idx_table_rect
          = btm.get_table_rect (&m_string_reg, bytes, byte_idx_table_y, 1);
        t.set_cell_span (idx_table_rect,
                         fmt_styled_string (sm, "[%li]",
                                            byte_idx.ulow ()));
      }

so presumably an issue with:

                         fmt_styled_string (sm, "[%li]",
                                            byte_idx.ulow ()));
on those hosts.

Possibly an endianness-handling mistake by me?