Re: Bug in WaitForBackgroundWorkerShutdown() [REL9_5_STABLE]

> Recently I've encountered a strange crash while calling elog(ERROR, "...")
> after the WaitForBackgroundWorkerShutdown() function. It turns out that
> _returns_ inside the PG_TRY()..PG_CATCH() block are *highly* undesirable,
> since they leave PG_exception_stack pointing to a local struct in a dead
> frame, which is an obvious UB. I've attached a patch which fixes this
> behavior in the aforementioned function, but there might be more errors
> like that elsewhere.

Forgot some curly braces, my bad. v2 attached.

--
Dmitry Ivanov
Postgres Professional: http://www.postgrespro.com
Russian Postgres Company