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Free reference in correct Perl context. Backpatch to release 8.2. Patch from Tim Bunce.

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This commit is contained in:
Andrew Dunstan 2010-02-12 04:31:14 +00:00
parent 14d5a478c4
commit 7e30c0067c
3 changed files with 70 additions and 2 deletions
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46
src/pl/plperl/expected/plperl_plperlu.out
View File

@ -17,3 +17,49 @@ 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)

7
src/pl/plperl/plperl.c
View File

@ -1,7 +1,7 @@
/**********************************************************************
* plperl.c - perl as a procedural language for PostgreSQL
*
* $PostgreSQL: pgsql/src/pl/plperl/plperl.c,v 1.163 2010/01/30 01:46:57 adunstan Exp $
* $PostgreSQL: pgsql/src/pl/plperl/plperl.c,v 1.164 2010/02/12 04:31:14 adunstan Exp $
*
**********************************************************************/
@ -1762,8 +1762,11 @@ compile_plperl_function(Oid fn_oid, bool is_trigger)
{
hash_search(plperl_proc_hash, internal_proname,
HASH_REMOVE, NULL);
if (prodesc->reference)
if (prodesc->reference) {
select_perl_context(prodesc->lanpltrusted);
SvREFCNT_dec(prodesc->reference);
restore_context(oldcontext);
}
free(prodesc->proname);
free(prodesc);
prodesc = NULL;

19
src/pl/plperl/sql/plperl_plperlu.sql
View File

@ -16,3 +16,22 @@ $$ LANGUAGE plperlu; -- compile plperlu code
SELECT * FROM bar(); -- throws exception normally (running plperl)
SELECT * FROM foo(); -- used to cause backend crash (after switching to plperlu)
-- 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');
create or replace function foo(text) returns text language plperlu as 'shift';
select foo('hey');
create or replace function foo(text) returns text language plperl as 'shift';
select foo('hey');
-- plperlu first
create or replace function bar(text) returns text language plperlu as 'shift';
select bar('hey');
create or replace function bar(text) returns text language plperl as 'shift';
select bar('hey');
create or replace function bar(text) returns text language plperlu as 'shift';
select bar('hey');