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-- test plperl/plperlu interaction
-- the language and call ordering of this test sequence is useful
CREATE OR REPLACE FUNCTION bar() RETURNS integer AS $$
#die 'BANG!'; # causes server process to exit(2)
# alternative - causes server process to exit(255)
spi_exec_query("invalid sql statement");
$$ language plperl; -- compile plperl code
CREATE OR REPLACE FUNCTION foo() RETURNS integer AS $$
spi_exec_query("SELECT * FROM bar()");
return 1;
$$ LANGUAGE plperlu; -- compile plperlu code
SELECT * FROM bar(); -- throws exception normally (running plperl)
ERROR: syntax error at or near "invalid" at line 4.
CONTEXT: PL/Perl function "bar"
SELECT * FROM foo(); -- used to cause backend crash (after switching to plperlu)
ERROR: syntax error at or near "invalid" at line 4. at line 2.
CONTEXT: PL/Perl function "foo"
-- test redefinition of specific SP switching languages
-- http://archives.postgresql.org/pgsql-bugs/2010-01/msg00116.php
-- plperl first
create or replace function foo(text) returns text language plperl as 'shift';
select foo('hey');
foo
-----
hey
(1 row)
create or replace function foo(text) returns text language plperlu as 'shift';
select foo('hey');
foo
-----
hey
(1 row)
create or replace function foo(text) returns text language plperl as 'shift';
select foo('hey');
foo
-----
hey
(1 row)
-- plperlu first
create or replace function bar(text) returns text language plperlu as 'shift';
select bar('hey');
bar
-----
hey
(1 row)
create or replace function bar(text) returns text language plperl as 'shift';
select bar('hey');
bar
-----
hey
(1 row)
create or replace function bar(text) returns text language plperlu as 'shift';
select bar('hey');
bar
-----
hey
(1 row)
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