[$] realloc() and the oversize importance of zero-size objects

Small objects can lead to large email threads. In thiscase, the GNU C Library (glibc) community has been having an extensivedebate over the handling of zero-byte allocations. Specifically, whatshould happen when a program calls realloc()specifying a size of zero? This is, it seems, a topic about which somepeople, at least, have strong feelings.