Re: BUG #16147: postgresql 12.1 (from homebrew) - pg_restore -hlocalhost --jobs=2 crashes

I encounter similar issue with the following differences to OP

- Operating system:   MacOS 10.14.6
- PostgreSQL (both server & pg_restore) installed via PSQL.app
https://github.com/PostgresApp/PostgresApp/releases/tag/v2.3.2
<https://github.com/PostgresApp/PostgresApp/releases/tag/v2.3.2>  

pg_restore's path is
/Applications/Postgres.app/Contents/Versions/latest/bin/pg_restore

Same as OP
If the number of jobs is 1
or setting host to unix socket

The error "pg_restore: error: a worker process died unexpectedly" won't be
raised
However this error doesn't happen on Ubuntu 18.04 version of psql
(
https://www.ubuntuupdates.org/package/postgresql/bionic-pgdg/main/base/postgresql-12
<https://www.ubuntuupdates.org/package/postgresql/bionic-pgdg/main/base/postgresql-12> 
)
So it might or might not be build issue for MacOS version 
Though having the same issue on both distribution channels (homebrew &
psql.app) seem rare

Anyway reported also to psql.app too
https://github.com/PostgresApp/PostgresApp/issues/538
<https://github.com/PostgresApp/PostgresApp/issues/538>  



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