Re: using explicit_bzero

Peter Eisentraut <peter.eisentraut@2ndquadrant.com> writes:
> +#ifndef HAVE_EXPLICIT_BZERO
> +#define explicit_bzero(b, len) bzero(b, len)
> +#endif

This presumes that every platform has bzero, which is unsafe (POSIX
doesn't specify it) and is an assumption we kicked to the curb a dozen
years ago (067a5cdb3).  Please use memset() for the substitute instead.

Also, I'm a bit suspicious of using AC_CHECK_FUNCS for this; that
generally Doesn't Work for anything that's not a vanilla out-of-line
function.  Are we worried about people implementing this as a macro,
compiler built-in, etc?

            regards, tom lane