| From: | Peter Eisentraut <peter(at)eisentraut(dot)org> |
|---|---|
| To: | pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Check for memset_explicit() and explicit_memset() |
| Date: | 2026-02-23 07:12:41 |
| Message-ID: | c4701776-8d99-41da-938d-88528a3adc15@eisentraut.org |
| Views: | Whole Thread | Raw Message | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
We can use either of these to implement a missing explicit_bzero().
explicit_memset() is supported on NetBSD. NetBSD hitherto didn't have a
way to implement explicit_bzero() other than the fallback variant.
memset_explicit() is the C23 standard, so we use it as first preference.
It is currently supported on:
- NetBSD 11
- FreeBSD 15
- glibc 2.43
It doesn't provide additional coverage, but as it's the new standard,
its availability will presumably grow, and eventually we'll be able to
remove some of the fallback variants.
| Attachment | Content-Type | Size |
|---|---|---|
| 0001-Check-for-memset_explicit-and-explicit_memset.patch | text/plain | 4.1 KB |
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Peter Eisentraut | 2026-02-23 07:24:22 | Re: Don't cast away const where possible |
| Previous Message | Peter Eisentraut | 2026-02-23 07:00:35 | Portable StaticAssertExpr |