fn getVbits(zza: []u8, zzvbits: []u8) u2
[src]
Get the validity data for addresses zza and copy it into the provided zzvbits array. Return values: 0 if not running on valgrind 1 success 2 [previously indicated unaligned arrays; these are now allowed] 3 if any parts of zzsrc/zzvbits are not addressable. The metadata is not copied in cases 0, 2 or 3 so it should be impossible to segfault your system by using this call.