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# Tests for various bugs found over time
use strict;
use warnings;
use PostgresNode;
use TestLib;
use Test::More tests => 1;
# Bug #15114
# The bug was that determining which columns are part of the replica
# identity index using RelationGetIndexAttrBitmap() would run
# eval_const_expressions() on index expressions and predicates across
# all indexes of the table, which in turn might require a snapshot,
# but there wasn't one set, so it crashes. There were actually two
# separate bugs, one on the publisher and one on the subscriber. The
# fix was to avoid the constant expressions simplification in
# RelationGetIndexAttrBitmap(), so it's safe to call in more contexts.
my $node_publisher = get_new_node('publisher');
$node_publisher->init(allows_streaming => 'logical');
$node_publisher->start;
my $node_subscriber = get_new_node('subscriber');
$node_subscriber->init(allows_streaming => 'logical');
$node_subscriber->start;
my $publisher_connstr = $node_publisher->connstr . ' dbname=postgres';
$node_publisher->safe_psql('postgres',
"CREATE TABLE tab1 (a int PRIMARY KEY, b int)");
$node_publisher->safe_psql('postgres',
"CREATE FUNCTION double(x int) RETURNS int IMMUTABLE LANGUAGE SQL AS 'select x * 2'");
# an index with a predicate that lends itself to constant expressions
# evaluation
$node_publisher->safe_psql('postgres',
"CREATE INDEX ON tab1 (b) WHERE a > double(1)");
# and the same setup on the subscriber
$node_subscriber->safe_psql('postgres',
"CREATE TABLE tab1 (a int PRIMARY KEY, b int)");
$node_subscriber->safe_psql('postgres',
"CREATE FUNCTION double(x int) RETURNS int IMMUTABLE LANGUAGE SQL AS 'select x * 2'");
$node_subscriber->safe_psql('postgres',
"CREATE INDEX ON tab1 (b) WHERE a > double(1)");
$node_publisher->safe_psql('postgres',
"CREATE PUBLICATION pub1 FOR ALL TABLES");
$node_subscriber->safe_psql('postgres',
"CREATE SUBSCRIPTION sub1 CONNECTION '$publisher_connstr application_name=sub1' PUBLICATION pub1");
$node_publisher->wait_for_catchup('sub1');
# This would crash, first on the publisher, and then (if the publisher
# is fixed) on the subscriber.
$node_publisher->safe_psql('postgres',
"INSERT INTO tab1 VALUES (1, 2)");
$node_publisher->wait_for_catchup('sub1');
pass('index predicates do not cause crash');
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