Re: Double invocation of InitPostmasterChild in bgworker with -DEXEC_BACKEND

Thomas Munro <thomas.munro@enterprisedb.com> writes:
> I discovered that if you build with -DEXEC_BACKEND on a Unix system
> and then try to start a background worker, it dies in
> InitializeLatchSupport:

> TRAP: FailedAssertion("!(selfpipe_readfd == -1)", File: "latch.c", Line: 161)

> That's because InitPostmasterChild is called twice.  I can
> successfully use regular parallel query workers and bgworkers created
> by extensions if I apply the attached patch.

Confirmed, fix pushed.  I wonder if we should have a buildfarm member
running the Unix EXEC_BACKEND code ...
        regards, tom lane