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Paul Eggert authored
(Fx_register_dnd_atom, x_handle_dnd_message): Use ptrdiff_t, not size_t, since we prefer signed. (Fx_register_dnd_atom): Check for ptrdiff_t (and size_t) overflow. * xterm.h (struct x_display_info): Use ptrdiff_t, not size_t, for x_dnd_atoms_size and x_dnd_atoms_length.
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