Hi,
On October 7, 2021 8:49:57 AM PDT, Tom Lane
>I'm also kind of unclear on why we need to do anything about this
>in the community version. If someone has forked PG and changed
>APIs to the extent that extensions are unlikely to work, there's
>not much stopping them from also making the two-line change
>to fmgr.h that would be needed to guarantee that different magic
>struct contents are needed.
I can see two reasons. First, it'd probably allow stock pg to generate a better error message when confronted with such
amodule. Second, there's some value in signaling forks that they should change (or think about changing), that field.
Andres
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