sources/winc/_dlldummy.c: 2408: bad call to sprintf ?

[dcb]

I just got the GNU C compiler to say

    inlined from 'LT_GraphicsLinearRemovingConditionsOutput2' at /home/dcb/rpmbuild/BUILD/cuneiform-linux-1.1.0/cuneiform_src/Kern/rblock/sources/winc/_dlldummy.c:2408:10:
/usr/include/bits/stdio2.h:33:3: warning: call to __builtin___sprintf_chk will always overflow destination buffer [enabled by default]

Source code is

    sprintf (szTextBuffer,
            "%d+%d+%d=%d "
            "W %d H %d H/W %5.2f W/H %5.2f\n",
            p -> nLetters,
            p -> nRoots - p -> nLetters - p -> nDust,
            p -> nDust,
            p -> nRoots,
            p -> Rect.xRight - p -> Rect.xLeft + 1,
            p -> Rect.yBottom - p -> Rect.yTop + 1,
            (double) (p -> Rect.yBottom - p -> Rect.yTop + 1) /
            (p -> Rect.xRight - p -> Rect.xLeft + 1),
            (double) (p -> Rect.xRight - p -> Rect.xLeft + 1) /
            (p -> Rect.yBottom - p -> Rect.yTop + 1)
    );

At least 37 bytes are written into szTextBuffer by this call. but it
is only 32 bytes long. Suggest increase to 40 bytes or so.