Function check_stack_depth

src/backend/tcop/postgres.c:4461–4473

* check_stack_depth/stack_is_too_deep: check for excessively deep recursion * * This should be called someplace in any recursive routine that might possibly * recurse deep enough to overflow the stack. Most Unixen treat stack * overflow as an unrecoverable SIGSEGV, so we want to error out ourselves * before hitting the hardware limit. * * check_stack_depth() just throws an error summarily.

 * can be used by code that wants to handle the error condition itself.
 */
void
check_stack_depth(void)
{
	if (stack_is_too_deep())
	{
		ereport(ERROR,
				(errcode(ERRCODE_STATEMENT_TOO_COMPLEX),
				 errmsg("stack depth limit exceeded"),
				 errhint("Increase the configuration parameter \"max_stack_depth\" (currently %dkB), "
						 "after ensuring the platform's stack depth limit is adequate.",
						 max_stack_depth)));
	}
}

bool
stack_is_too_deep(void)