On 2019-11-04 16:01, Tom Lane wrote:
> Now that I've actually looked at the patched code, there's a far
> more severe problem with it. Namely, that use of PG_FINALLY
> means that the "finally" segment is run without having popped
> the error context stack, which means that any error thrown
> within that segment will sigsetjmp right back to the top,
> resulting in an infinite loop. (Well, not infinite, because
> it'll crash out once the error nesting depth limit is hit.)
> We *must* pop the stack before running recovery code.
I can confirm that that indeed happens. :(
Here is a patch to fix it.
--
Peter Eisentraut http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
