(1 row)
DROP FUNCTION nonsimple_expr_test();
+--
+-- Test cases involving recursion and error recovery in simple expressions
+-- (bugs in all versions before October 2010). The problems are most
+-- easily exposed by mutual recursion between plpgsql and sql functions.
+--
+create function recurse(float8) returns float8 as
+$$
+begin
+ if ($1 < 10) then
+ return sql_recurse($1 + 1);
+ else
+ return $1;
+ end if;
+end;
+$$ language plpgsql;
+-- "limit" is to prevent this from being inlined
+create function sql_recurse(float8) returns float8 as
+$$ select recurse($1) limit 1; $$ language sql;
+select recurse(0);
+ recurse
+---------
+ 10
+(1 row)
+
+create function error1(text) returns text language sql as
+$$ SELECT relname::text FROM pg_class c WHERE c.oid = $1::regclass $$;
+create function error2(p_name_table text) returns text language plpgsql as $$
+begin
+ return error1(p_name_table);
+end$$;
+BEGIN;
+create table public.stuffs (stuff text);
+SAVEPOINT a;
+select error2('nonexistent.stuffs');
+ERROR: schema "nonexistent" does not exist
+CONTEXT: SQL function "error1" statement 1
+PL/pgSQL function "error2" line 2 at RETURN
+ROLLBACK TO a;
+select error2('public.stuffs');
+ error2
+--------
+ stuffs
+(1 row)
+
+rollback;
+drop function error2(p_name_table text);
+drop function error1(text);
-- Test handling of string literals.
set standard_conforming_strings = off;
create or replace function strtest() returns text as $$