[PATCH v9] malloc: add free_sized and free_aligned_sized from C23

[Paul Eggert]

On 2025-10-20 10:00, Justin King wrote:
> That would generally be a bad idea, as custom malloc implementations would
> not be able to take advantage of providing their own
> optimal implementation.

First, OK that's fine, but how about putting that in a comment? It could 
be either in the .h file or in the .c source files.

Second, doesn't this mean the "Replacing malloc" section should talk 
about the need to replace free_sized and free_aligned_sized, in the 
section where it currently talks about replacing aligned_alloc etc.?