Function FlushErrorState

src/backend/utils/error/elog.c:1917–1930

* FlushErrorState --- flush the error state after error recovery * * This should be called by an error handler after it's done processing * the error; or as soon as it's done CopyErrorData, if it intends to * do stuff that is likely to provoke another error. You are not "out" of * the error subsystem until you have done this. */

 * the error subsystem until you have done this.
 */
void
FlushErrorState(void)
{
	/*
	 * Reset stack to empty.  The only case where it would be more than one
	 * deep is if we serviced an error that interrupted construction of
	 * another message.  We assume control escaped out of that message
	 * construction and won't ever go back.
	 */
	errordata_stack_depth = -1;
	recursion_depth = 0;
	/* Delete all data in ErrorContext */
	MemoryContextResetAndDeleteChildren(ErrorContext);
}

/*
 * ThrowErrorData --- report an error described by an ErrorData structure