[pfx] Re: Postfix stable release 3.11.4 and legacy releases 3.10.11, 3.9.12, 3.8.18

On 22 Jun 2026, at 15:48, Wietse Venema wrote:

> Wouldn't -Wimplicit-fallthrough catch that?
>
> Sure. And it would break existing legtimate Postfix code.

Deliberate fallthrough can be annotated with [[fallthrough]], but as 
that's new in C23, postfix probably can't use it yet. Still, it's easy 
to create a macro that does some pre-C23 per-complier equivalents, like:

```
#if (defined(GCC_VERSION) && GCC_VERSION>=7000000) || blahblah)
   #define POSTFIX_FALLTHROUGH __attribute__((fallthrough));
#else
   #define POSTFIX_FALLTHROUGH /* FALLTHROUGH */
#endif
```

I've never contributed a patch to postfix before, but I could give it a 
try...

Sean

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