Re: Problem report #63

[Stuart D. Herring]

> 370     if (posint >= CHARPOS (top)
> 371         && posint <= BUF_ZV (buf)
> 372         && CHARPOS (top) >= BUF_BEGV (buf)
> 373         && CHARPOS (top) <= BUF_ZV (buf)
> 374         && pos_visible_p (w, posint, &x, &y, &rtop, &rbot, NILP
> (partially))
> 375         && (fully_p = !rtop && !rbot, (!NILP (partially) || fully_p)))
> 376       in_window = Qt;
> 377

in_window was Qnil before this section: x and y have been assigned by
pos_visible_p() if it's no longer Qnil.

> At conditional (9): "in_window != Qnil" taking true path
> At conditional (10): "partially != Qnil" taking true path
>
> 378     if (!NILP (in_window) && !NILP (partially))
>
> Event uninit_use: Using uninitialized value "y"
> Also see events: [var_decl]
>
> 379       in_window = Fcons (make_number (x),
> 380                          Fcons (make_number (y),
> 381                                 Fcons ((fully_p ? Qnil
> 382                                        : Fcons (make_number (rtop),
> 383                                                 make_number (rbot))),
> 384                                        Qnil)));

Here, if x and y are used, in_window isn't Qnil, so they were assigned. 
No bug.

Davis

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