"dandl" <david(at)andl(dot)org> writes:
> SPI call to execute "ROLLBACK" triggers FATAL ERROR "stack empty". What does
> it mean? Nothing in the docs I can see.
I can't find that string anywhere in the Postgres sources. However,
SPI should refuse to execute ROLLBACK, or any other transaction control
command; it should give you back a SPI_ERROR_TRANSACTION result code
instead. Maybe you're not checking for failure results and expecting
the command to have done something?
regards, tom lane