Re: Avoid unecessary MemSet call (src/backend/utils/cache/relcache.c)

On 01.08.22 19:08, Ranier Vilela wrote:
> Like how 
> https://github.com/postgres/postgres/commit/9fd45870c1436b477264c0c82eb195df52bc0919 
> <https://github.com/postgres/postgres/commit/9fd45870c1436b477264c0c82eb195df52bc0919>
> New attempt to remove more MemSet calls, that are safe.
> 
> Attached v3 patch.

Note that struct initialization does not set padding bits.  So any 
struct that is used as a hash key or that goes to disk or something 
similar needs to be set with memset/MemSet instead.  Various places in 
the code make explicit comments about that, which your patch deletes, 
which is a mistake.  This patch needs to be adjusted carefully with this 
in mind before it can be considered.