BUG? weird unused variable warnings compiling XEmacs src/redisplay.c

[Skip Montanaro]

I'm compiling XEmacs 20.3-pre3 right now.  On my Linux system egcs (11/14
snapshot) is complaining:

    src/redisplay.c: In function `add_emchar_rune':
    src/redisplay.c:926: warning: unused variable `buf'
    src/redisplay.c: In function `add_emchar_rune':
    src/redisplay.c:926: warning: unused variable `buf'
    src/redisplay.c: In function `add_blank_rune':
    src/redisplay.c:1071: warning: unused variable `buf'
    src/redisplay.c: In function `add_blank_rune':
    src/redisplay.c:1071: warning: unused variable `buf'
    src/redisplay.c: In function `add_glyph_rune':
    src/redisplay.c:1654: warning: unused variable `buf'
    src/redisplay.c:1674: warning: unused variable `buf'
    src/redisplay.c: In function `add_glyph_rune':
    src/redisplay.c:1654: warning: unused variable `buf'
    src/redisplay.c:1674: warning: unused variable `buf'

but when I looked at the code, all occurrences looked similar to the
following:

    struct buffer *buf = XBUFFER (WINDOW_BUFFER (w));
    rb.bufpos = bytind_to_bufpos (buf, data->bi_bufpos);

which certainly appears as if buf is being used.  Perhaps it's an egcs
bug...

Skip Montanaro    | Musi-Cal: http://concerts.calendar.com/
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