| From: | Alvaro Herrera <alvherre(at)2ndquadrant(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Andres Freund <andres(at)anarazel(dot)de>, pgsql-hackers(at)lists(dot)postgresql(dot)org, Robert Haas <robertmhaas(at)gmail(dot)com> |
| Subject: | Re: CLOBBER_CACHE_ALWAYS regression instability |
| Date: | 2020-04-05 23:54:19 |
| Message-ID: | 20200405235419.GA24134@alvherre.pgsql |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
On 2020-Apr-05, Tom Lane wrote:
> What I wish we had was alloca(), so you don't need a FUNC_MAX_ARGS-sized
> array to parse a two-argument function call. Too bad C99 didn't add
> that. (But some sniffing around suggests that an awful lot of systems
> have it anyway ... even MSVC. Hmmm.)
Isn't it the case that you can create an inner block with a constant
whose size is determined by a containing block's variable? I mean as in
the attached, which refuses to compile because of our -Werror=vla -- but
if I remove it, it compiles fine and works in my system.
--
Álvaro Herrera https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
| Attachment | Content-Type | Size |
|---|---|---|
| not-alloca.patch | text/x-diff | 977 bytes |
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Grigory Smolkin | 2020-04-06 00:02:37 | archive recovery fetching wrong segments |
| Previous Message | Andres Freund | 2020-04-05 23:48:25 | Re: Make MemoryContextMemAllocated() more precise |