Re: diffutils-3.7.41-7475 exercises undefined behaviour

[Bruno Haible]

Hi Jim,

> I've reverted my own change and applied/pushed yours
> with only a trivial comment change.

In the current state, I again get errors from valgrind during 'make check':

  Conditional jump or move depends on uninitialised value(s)
     at 0x402101: block_compare (cmp.c:624)
     by 0x402101: cmp (cmp.c:467)
     by 0x402101: main (cmp.c:361)

You really need *both* my change (for the first sentinel byte) and
your change (for the remaining bytes in the sentinel word).

Bruno