initialize_floorplan fails without -site option

[titan73]

Describe the bug

The - site is supposed to be optional. A warning is printed but an error occurs later.

% initialize_floorplan -utilization 10
[WARNING IFP-0011] use -site to add placement rows.
TypeError in method 'init_floorplan_util', argument 7 of type 'odb::dbSite *'

% initialize_floorplan -die_area {0 0 10 10} -core_area {0 0 10 10}
[WARNING IFP-0011] use -site to add placement rows.
TypeError in method 'init_floorplan_core', argument 9 of type 'odb::dbSite *'

Is -site option really to be optional? Seems the contrary. In that case the warning should be turn into an error and doc updated.

Expected Behavior

No error.

Environment

Lastest git.

To Reproduce

Type:
initialize_floorplan -utilization 10
or
initialize_floorplan -die_area {0 0 10 10} -core_area {0 0 10 10}

Relevant log output

No response

Screenshots

No response

Additional Context

No response

[maliberty]

It looks like it should be an error. Do you want to make a PR?

[titan73]

Yes. I'll do it. Assign this issue to me.

[titan73]

Sent PR #6069