Re: using explicit_bzero

Alvaro Herrera <alvherre@2ndquadrant.com> writes:
> On 2019-Jul-11, Thomas Munro wrote:
>> Following a trail of crumbs beginning at OpenSSH's fallback
>> implementation of this[1], I learned that C11 has standardised
>> memset_s[2] for this purpose.  Macs have memset_s but no
>> explicit_bzero.  FreeBSD has both.  I wonder if it'd be better to make
>> memset_s the function we use in our code, considering its standard
>> blessing and therefore likelihood of being available on every system
>> eventually.

> Sounds like a future-proof way would be to implement memset_s in
> src/port if absent from the OS (using explicit_bzero and other tricks),
> and use that.

+1 for using the C11-standard name, even if that's not anywhere
in the real world yet.

            regards, tom lane