Re: Windows vs C99 (was Re: C99 compliance for src/port/snprintf.c)

Hi,

On 2018-08-22 17:17:27 +0530, Sandeep Thakkar wrote:
> > We build windows binaries (>=9.3) on Windows 7 and Windows Server 2012 R2.
> For 9.3, the Visual Studio version is 2010 and for 9.4 and v10, we use
> 2013. For v11, we use 2017.

Sndeep: Thanks for the information. Did you ever encounter problems (at
build or during runtime) with using those binaries on older platforms?

Everyone: Given the fact that all the people building windows packages
currently use a new enough stack by a fair margin, I think we should
conclude that there's no obstacle on the windows side of things.

If we agree on that, I'm going to propose a patch that includes:
- relevant cleanups to configure
- adapts sources.sgml to refer to C99 instead of C89
- add some trivial conversions to for(int i;;) and struct initializers,
so the relevant old animals fail
- adds a configure check to enable errors with vla usage (-Werror=vla)

Questions:

- do we want to make declarations at arbitrary points errors? It's
already a warning currently.
- other new restrictions that we want to introduce at the same time?

Greetings,

Andres Freund