Added/Updated tests\bugs\gh_7554_test.py: Checked on 5.0.0.1050: all OK.

tests/bugs/gh_7554_test.py

@@ -0,0 +1,60 @@
+#coding:utf-8
+
+"""
+ID:          issue-7554
+ISSUE:       https://github.com/FirebirdSQL/firebird/issues/7554
+TITLE:       Firebird 5 partial index creation causes server hang up
+DESCRIPTION:
+NOTES:
+    [04.06.2023] pzotov
+    Confirmed bugcheck on 5.0.0.1049: second execution of test SQL leads to:
+    internal Firebird consistency check (invalid SEND request (167), file: Statement.cpp line: 405)
+    Checked on 5.0.0.1050: all OK.
+"""
+
+import pytest
+from firebird.qa import *
+
+N_ROWS = 100000
+init_sql = """
+    create table tbl(num int);
+    set term ^;
+    create procedure sp_add_rows(a_cnt int not null) as
+        declare i int = 0;
+    begin
+        while (:i < :a_cnt) do
+        begin
+            insert into tbl(num) values (0);
+            i = i + 1;
+        end
+    end
+    ^
+    set term ;^
+    commit;
+"""
+
+db = db_factory(init = init_sql)
+
+test_script = f"""
+    set autoddl off;
+    delete from tbl;
+    execute procedure sp_add_rows( {N_ROWS} );
+    create index tbl_p1 on tbl (num) where num > 0;
+    commit;
+    drop index tbl_p1;
+    commit;
+"""
+
+act = isql_act('db', test_script)
+
+expected_stdout = """
+"""
+
+@pytest.mark.version('>=5.0')
+def test_1(act: Action):
+
+    act.expected_stdout = expected_stdout
+    act.execute(combine_output = True)
+    act.execute(combine_output = True) # <<< THIS CAUSED BUGCHECK BEFORE FIX
+    assert act.clean_stdout == act.clean_expected_stdout
+