<<This is a modification to gcc that implements pointers as triples.
While there is a performance penalty for doing this, it can completely
eliminate the problem of exploitable buffer overflows. However, programs
that violate the rules of ISO C by generating out-of-range pointers will
fail.
>>
Note incidentally that the C rules that allow referencing the address just
past the end of an array (an irregularity that recognizes the infeasibility
of declaring the common idiom for (a=b;a<&b[10];a++)) has an interesting
consequence on a segmented machine, namely that you cannot allocate an
array too near the end of the segment.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Mon Jan 07 2002 - 21:00:19 EST