"dandl" <david@andl.org> writes:
> The question is whether there is any way to know that some Postgres API call such as SPI (or others) did not return
butinstead triggered an elog(ERROR).
I think what you're looking for is to set up a PG_TRY/PG_CATCH block to
intercept the error as the stack is being unwound.
regards, tom lane