I cannot always reproduce this, but for some SUBTYPEs I get the following error (did not yet see it with 12.7).What does this error mean? The PL/SQL code looks fine and works as expected.
This is the error:
Found 'test_package.t_boolean_string': This variable has a zero size
This is the code:
CREATE OR REPLACE PACKAGE test_package AS
SUBTYPE t_boolean_string IS VARCHAR2(1);
v_test2 := 'Y';